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  • Aquaculture  (109)
  • Chemistry  (49)
  • Fisheries Society of Nigeria  (74)
  • Islamic Azad University, Science and Research Branch, Tehran, Fisheries  (51)
  • Dordrecht : Springer
  • 1
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    Structure-based Drug Discovery (2007)
    Dordrecht : Springer
    Details
    Keywords: Biochemistry ; Biochemistry ; Chemistry ; Chemistry, Physical organic
    ISBN: 9781402044076
    URL: https://doi.org/10.1007/1-4020-4407-0
    Language: English
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    Computational Studies of RNA and DNA (2006)
    Dordrecht : Springer
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    Keywords: Chemistry ; Chemistry, Organic ; Chemistry ; Mathematics
    ISBN: 9781402048513
    URL: https://doi.org/10.1007/978-1-4020-4851-3
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    New Carbon Based Materials for Electrochemical Energy Storage Systems: Batteries, Supercapacitors and Fuel Cells (2006)
    Dordrecht : Springer
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    Keywords: Chemistry ; Electric engineering ; Nanotechnology ; Optical materials ; Surfaces (Physics)
    ISBN: 9781402048128
    URL: https://doi.org/10.1007/1-4020-4812-2
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  • 4
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    Non-Linear Optical Properties of Matter : From molecules to condensed phases (2006)
    Dordrecht : Springer
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    Keywords: Chemistry ; Chemistry ; Chemistry ; Mathematics ; Condensed matter ; Quantum optics
    ISBN: 9781402048500
    URL: https://doi.org/10.1007/1-4020-4850-5
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    Radiation Induced Molecular Phenomena in Nucleic Acids : A Comprehensive Theoretical and Experimental Analysis (2008)
    Dordrecht : Springer
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    Keywords: Biochemistry ; Biology ; Data processing ; Biomedical engineering ; Chemistry ; Chemistry, Physical organic ; Materials
    ISBN: 9781402081842
    URL: https://doi.org/10.1007/978-1-4020-8184-2
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    Frontiers in Quantum Systems in Chemistry and Physics (2008)
    Dordrecht : Springer
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    Keywords: Chemistry ; Chemistry, Physical organic ; Condensed matter ; Quantum theory
    ISBN: 9781402087073
    URL: https://doi.org/10.1007/978-1-4020-8707-3
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    Smart Materials for Energy, Communications and Security (2008)
    Dordrecht : Springer
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    Keywords: Chemistry ; Engineering ; Magnetism ; Materials ; Optical materials
    ISBN: 9781402087967
    URL: https://doi.org/10.1007/978-1-4020-8796-7
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    A Guide to Biomolecular Simulations (2006)
    Dordrecht : Springer
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    Keywords: Biology ; Data processing ; Biomedical engineering ; Chemistry
    ISBN: 9781402035876
    URL: https://doi.org/10.1007/1-4020-3587-X
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    Hydrogen Bonding—New Insights (2006)
    Dordrecht : Springer
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    Keywords: Chemistry ; Chemistry, Physical organic ; Chemistry ; Mathematics ; Crystallography
    ISBN: 9781402048531
    URL: https://doi.org/10.1007/978-1-4020-4853-1
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  • 10
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    Molecular Materials with Specific Interactions (2007)
    Dordrecht : Springer
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    Keywords: Analytical biochemistry ; Chemistry ; Materials ; Nanotechnology
    ISBN: 9781402053726
    URL: https://doi.org/10.1007/1-4020-5372-X
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    An Introduction To Chemoinformatics (2007)
    Dordrecht : Springer
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    Keywords: Chemistry
    ISBN: 9781402062919
    URL: https://doi.org/10.1007/978-1-4020-6291-9
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  • 12
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    Hybrid Methods of Molecular Modeling (2008)
    Dordrecht : Springer
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    Keywords: Biology ; Data processing ; Chemistry ; Chemistry, Physical organic ; Materials ; Nanotechnology
    ISBN: 9781402081897
    URL: https://doi.org/10.1007/978-1-4020-8189-7
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  • 13
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    Battery Management Systems : Accurate State-of-Charge Indication for Battery-Powered Applications (2008)
    Dordrecht : Springer
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    Keywords: Chemistry ; Chemistry ; Mathematics ; Computer simulation ; Computer software ; Weights and measures
    ISBN: 9781402069451
    URL: https://doi.org/10.1007/978-1-4020-6945-1
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  • 14
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    Thermal Properties of Green Polymers and Biocomposites (2005)
    Dordrecht : Springer
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    Keywords: Chemistry ; Chemistry, Organic ; Chemistry, Physical organic ; Chemistry, inorganic ; Polymers
    ISBN: 9781402023545
    URL: https://doi.org/10.1007/1-4020-2354-5
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    Chemoinformatics : Theory, Practice, & Products (2007)
    Dordrecht : Springer
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    Keywords: Biochemistry ; Bioinformatics ; Chemistry ; Chemistry, Organic ; Medicine
    ISBN: 9781402050015
    URL: https://doi.org/10.1007/1-4020-5001-1
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  • 16
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    Number Theory and the Periodicity of Matter (2008)
    Dordrecht : Springer
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    Keywords: Chemistry, Physical organic ; Chemistry, inorganic ; Chemistry ; Mathematics ; Materials ; Mathematics ; Physics
    ISBN: 9781402066603
    URL: https://doi.org/10.1007/978-1-4020-6660-3
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  • 17
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    Chemistry from First Principles (2008)
    Dordrecht : Springer
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    Keywords: Chemistry ; Chemistry, Physical organic ; Chemistry ; Mathematics ; Quantum theory
    ISBN: 9781402085468
    URL: https://doi.org/10.1007/978-1-4020-8546-8
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    Modern Formal Methods and Applications (2006)
    Dordrecht : Springer
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    Keywords: Chemistry ; Mathematics ; Computer science ; Logic design
    ISBN: 9781402042232
    URL: https://doi.org/10.1007/1-4020-4223-X
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  • 19
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    Fluid Transport in Nanoporous Materials (2006)
    Dordrecht : Springer
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    Keywords: Chemical engineering ; Chemistry ; Chemistry, Physical organic ; Polymers ; Thermodynamics ; Water pollution
    ISBN: 9781402043826
    URL: https://doi.org/10.1007/1-4020-4382-1
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    Modeling Chemical Systems Using Cellular Automata : A textbook and laboratory manual (2005)
    Dordrecht : Springer
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    Keywords: Chemistry ; Chemistry, Physical organic ; Chemistry ; Mathematics ; Computer simulation
    ISBN: 9781402036903
    URL: https://doi.org/10.1007/1-4020-3690-6
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  • 21
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    Green-Function Theory of Chemisorption (2006)
    Dordrecht : Springer
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    Keywords: Catalysis ; Chemical engineering ; Chemistry ; Chemistry, Physical organic ; Chemistry ; Mathematics ; Surfaces (Physics)
    ISBN: 9781402044052
    URL: https://doi.org/10.1007/1-4020-4405-4
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    Models, Mysteries and Magic of Molecules (2008)
    Dordrecht : Springer
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    Keywords: Analytical biochemistry ; Chemistry ; Chemistry, Physical organic ; Crystallography ; Molecular structure ; Nanotechnology
    ISBN: 9781402059414
    URL: https://doi.org/10.1007/978-1-4020-5941-4
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  • 23
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    Periodic Nanostructures (2007)
    Dordrecht : Springer
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    Keywords: Chemistry ; Chemistry ; Mathematics ; Computer graphics ; Nanotechnology
    ISBN: 9781402060205
    URL: https://doi.org/10.1007/978-1-4020-6020-5
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  • 24
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    Metathesis Chemistry : From Nanostructure Design to Synthesis of Advanced Materials (2007)
    Dordrecht : Springer
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    Keywords: Catalysis ; Chemistry ; Chemistry, Organic ; Materials ; Nanotechnology ; Polymers
    ISBN: 9781402060915
    URL: https://doi.org/10.1007/978-1-4020-6091-5
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  • 25
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    Topics in the Theory Of Chemical and Physical Systems : Proceedings of the 10th European Workshop on Quantum systemsin chemistry and physics held at Carthage, Tunisia, in September 2005 (2007)
    Dordrecht : Springer
    Details
    Keywords: Chemistry ; Chemistry, Physical organic ; Materials ; Molecular structure ; Plasma (Ionized gases) ; Quantum theory
    ISBN: 9781402054600
    URL: https://doi.org/10.1007/978-1-4020-5460-0
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  • 26
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    Theoretical and Quantum Mechanics : Fundamentals for Chemists (2006)
    Dordrecht : Springer
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    Keywords: Chemistry ; Chemistry, Physical organic ; Chemistry, inorganic ; Mechanics, applied ; Molecular structure ; Quantum theory
    ISBN: 9781402036880
    URL: https://doi.org/10.1007/1-4020-3688-4
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  • 27
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    Fuel Cell Technologies: State and Perspectives : Proceedings of the NATO Advanced Research Workshop on Fuel Cell Technologies: State and Perspectives Kyiv, Ukraine 6–10 June 2004 (2005)
    Dordrecht : Springer
    Details
    Keywords: Catalysis ; Chemistry ; Condensed matter ; Materials ; Renewable energy sources
    ISBN: 9781402034985
    URL: https://doi.org/10.1007/1-4020-3498-9
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  • 28
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    Comparison the nutritional value of cultured Penaeus vanname with marine shrimps Penaeus merguiensis and Penaeus semisulcatus (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19129 | 17408 | 2016-02-01 21:06:00 | 19129 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-07-13
    Description: The purpose for which this study was intended wasto compare nutritive value among the farmed Vannamei, sea Green Tiger and Banana shrimps native to the PersianGulf.To provide the samples of farmed shrimps at the end of the farming season (Oct. 23rd through Nov. 22nd of 2011), we chosen one farm of the Holleh Shrimp Farming, from which 100 shrimps were randomly selected. From among these 100 shrimps, 3 to 5 ones were taken to conduct an analysis upon. Further, to obtain the Banana and Green Tiger shrimps sampling was done at the fishing season (July 23rd through Aug. 22rd of 2011) at Halileh Fishing Wharf located in Bushehr Fishing Harbor and also Bandar Abbas Wharf.The samples obtained were immediately kept in the ice powder. After some biometric tasks done upon them, they were at the shortest possible time transferred to a laboratory where they went through various experiments to determine their content of raw protein, fat, ash, moisture, various fatty acids and their types, cholesterol, vitamins A and E, and such mineral elements as iron and calcium. All the experimentswere carried out three times to establish confidence in the results to be obtained.Findings of the comparison showed the content of raw protein, fat, moisture, and ash of, respectively, 23.233%, 600%, 73.077% and 2.500% for the Vannamei samples, of 22.717%, 427%, 74.133% and 1.826% for our Banana shrimps and of 17.377%, 430%, 79.866% and 1.313% for the Green Tiger samples. A total of 24 fatty acids for the Vannamei shrimps and 27 for the Banana and Green Tiger were detected. SFA of the Banana shrimps was 368.45 mg/100g (51.76%), while those of the Vannamei and Green Tiger samples were observed, respectively, 363.54 mg/100g (37.26%) and 296.06 mg/100g (49.12%).A similar measurement for MUFA content of the three types of our samples revealed 243.85mg/100g (24.9%) for the Vannamei, 203.177 mg/100g (33.76%) for the Green Tiger and 179.033 mg/100g (25.14%) for the Banana shrimps. The content of PUFA unsaturated fatty acids in the Vannamei,131Green Tiger and Banana samples were, respectively, 370.660 mg/100g (37.84%), 101.573 mg/100g (16.9%) and 163.733 mg/100g (23.1%). Further, the comparison found a omega-3-fatty-acids total of 151.747 mg/100g(15.51%) for the Vannamei, 57.123 mg/100g (9.54%) for the Green Tiger and 130.460 mg/100g (18.46%) for the Banana species under study.
    Description: PhD
    Description: Advisors: Abbas Matinfar, A. Kamali Counsellors: Mehdi Soltani
    Keywords: Aquaculture ; Biology ; Fisheries
    Repository Name: AquaDocs
    Type: thesis
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  • 29
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    Effect of butachlor on spermatogenesis, testosterone amount and testes tissue Rutilus frisii kutum Kamenskii 1901 (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19302 | 17408 | 2016-01-22 09:14:28 | 19302 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-07-14
    Description: Morphological assessment of sexually mature Rutilus frisii kutum Kamenskii 1901 caught from the rivers (Shirud, Khoshkrud, Sepidrud and Chelavand Rivers) flowing in the southwest Caspian Sea region was conducted and sperm volume, total sperm count and sperm concentration of abnormal sperms were determined after exposing the spawners to 60% herbicide butachlor (machete). Spawners under study were maintained in tanks (1000 l) at the Shahid Ansari Teleost Fish Hatchery and exposed to two different concentrations (25% and 75% of its LC50 value) of butachlor.Results obtained indicate that exposure to high butachlor toxicity (75% of its LC50 value) decreased sperm volume to 0.61 ± 0.42 cc in 2-3 year old fishes and to 0.55 ± 0.42 cc in fishes above 3 years of age, while that in fish exposed to low butachlor toxicity (25% of its LC50 value) decreased to 1.55 ± 0.42 cc in 2-3 year old fishes and to 1.28 ± 0.42 cc in fishes above 3 years of age. The sperm volume under normal conditions in R. frisii kutum is 4.6 ± 0.42 cc in 2-3 year olds and 4.58 ± 0.42 cc in fishes above 3 years of age. The total sperm count in R. frisii kutum is 39.74 ± 2.5 billion spermatozoa/cc in 2-3 year olds and 42.99 ± 2.5 billion spermatozoa/cc in fishes above 3 years of age. When exposed to high butachlor toxicity, total sperm count dropped to 16.92 ± 2.5 billion spermatozoa/cc in 2-3 year olds and to 15.98 ± 2.5 billion spermatozoa/cc in fishes above 3 years of age. Similarly total sperm count in R. frisii kutum exposed to low butachlor toxicity was recorded as 23.6 ± 2.5 billion spermatozoa/cc in 2-3 year olds and 29.4 ± 2.5 billion spermatozoa/cc in fishes above 3 years of age. Under normal conditions, on the basis of morphology, spermatozoa showed only 10 ± 1.92% of abnormal sperms. The number ofabnormal sperms increased by 28.6 ± 1.92% in fishes exposed to high butachlor toxicity, while that in fishes exposed to low butachlor toxicity increased by 19.7 ± 1.92% in 2-3 year olds and 16.6 ± 19.2% in fishes above 3 years of age.It is evident from the results obtained that increase in level of pollution caused a decrease in sperm volume but an increase in the percentage of abnormal sperms.Results obtained indicate that exposure to high butachlor toxicity (75% of its LC50 value) decreased testostron hormone to 0.31 ± 0.22 ng/ml in high butachlor toxicity, and to 0.45 ± 0.22 ng/ml in low butachlor toxicity (25% of its LC50 value). Testostron hormone dropped to 0.53 ± 0.22 ng/ml in 2-3 year olds and to 0.79 ± 0.22ng/ in fishes above 3 years of age. The testostron hormone under normal conditions in R. frisii kutum is 2.7 ± 0.22 ng/ml.It is evident from the results obtained that increase in level of pollution caused a decrease in testostron hormone
    Description: PhD
    Description: Advisors: Sh. Nezami Baluchi Counsellors: A. Keyvan, Shahla Jamili. The full text document is in Farsi only so it has not been possible for AC Editors to check the metadata input.
    Keywords: Aquaculture
    Repository Name: AquaDocs
    Type: thesis
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  • 30
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    Study on biological characteristics, sexual maturation and reproduction of Liza abu in the water of Khozestan Province (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19308 | 17408 | 2016-01-22 09:23:29 | 19308 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-06-25
    Description: As the most of the fish resources are known and exploited, protecting their generation is of the greatest importance. Aquaculture is one of the efficient procedures in protecting and reviving fish resources and knowing about the reproductive cycle and gonads development has an important role in approaching this aim.Liza abu belongs to the family Mugilidae that according to its resistance to the environmental condition and its fast growth , can be introduced as a fish with economical value. As there is no scientific data on the reproductive biology of this species , study on the reproductive biology and gonad development is considered as the aim of this research .For this purpose , 360 samples of this species were investigated during the period from February 2007 to January 2008 in Khozestan Province . After studing morphological and histological characteristics of gonad specimen , they were prepared through histological method. Samples were prepared through usual histological method and studied under light microscope.According to the results, the maturity stages of male and female Liza abu were separated to six different successive stages. In ovaries , these stages were as follow : In stage І, the oocytes were small , this stage was observed from July to October . In stage ІІ, considerable growth was observed in the oocytes . This stage was observed from October to January . In stage III, due to vitellogenesis, the maximum growth was observed and three layers of theca, granullosa and follicle cells were visible. This stage was observed during January and February . In stage IV, migration of germinal vesicle was observed and due to hydration of the oocytes , their diameter was increased. The ovaries were yellowish and in maximum size and ovules could be easily observed with naked-eye . This stage was observed in February and March . In stage V, spawning occured. This stage was observed in April . In stage VI, ovaries consisted of immature and atretic oocytes and also empty follicles. This stage was observed in May and June.In testes , these stages were as follow : In stage I , the testes were small in size and contained the spermatogonia which were the only cellular components.This stage was observed in August and September . In stage II (maturing virgin ) , the spermatogonia and the primary spermatocytes were visible. This stage was observed in October . In stage III (developing), intensive spermatogenesis was occured and the primary and the secondary spermatocytes were the most visible cells during this stage .This stage was observed from November to January. In stage IV(developed), cells of all stages of spermatogenesis could be seen but the secondary spermatocytes and spermatids were in large number. This stage was observed from January to March. In stage V , the testes were filled with sperms. This stage was observed in March and April .In stage VI, residual spermatozoa and the spermatogonia were visible in the testes. This stage was observed from May to August.According to cyclic changes in GSI, sexual maturation in breeding begins in January and spawning occurs in April. The ova diameter ranged from 30.75 μ in stage I to 472.19 μ in stage IV. In this study , the sex ratio was 1:2.7, and male and female percentage were 27.02% and 72.98% respectively. This means that females predominate males. In this study absolute fecundity was calculated and changing between 30805.44 to 431247.3 was observed and absolute fecundity was calculated 111275.3 in average.
    Description: PhD
    Description: Advisors: Shahla Jamili Counsellors: Isa Sharifpour. The full text document is in Farsi only so it has not been possible for AC Editors to check the metadata input.
    Keywords: Aquaculture ; Biology ; Fisheries
    Repository Name: AquaDocs
    Type: thesis
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  • 31
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    The study of artificial propagation efficiency and fingerlings production of Coregonus lavaretus (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19312 | 17408 | 2016-01-10 09:23:17 | 19312 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-06-25
    Description: In order to study of the artificial propagation efficiency in white fish (Coregonuslavaretus) and its fingerlings producing in IRAN, a 9 mounts study project was beendone which during it, the characteristics of the matures and brood stocks fishes, thecondition of their natural and artificial propagation, and the characteristics of producedfrys, were been studied. Throughout the total 82 pieces caught fishes during Septembertil February 2003, 10 pieces of them were the female brood stocks which during thecatch time did not have spouse. The study of these fishes showed that there was nosignificant correlation between their weight and their length. The most and the leastabsolute fecundity of these brood stocks were 19120 and 11496 respectively. Theartificial propagation was been done by 5 males and 4 females broods took which57602 ova, with 89/2% fertilization rate, earned from them. The incubation periodprolonged 55 days in 8°c. At the end of the incubation, 23913 larvae released. So theartificial propagation efficiency was calculated 41/51% in this study. Yolk sackabsorption prolonged 4 days. 3 different food treatment were considered for frybreeding which contain of Brachiouns plicatilis as live food, salmon starter food ascommercial food, and the mixed of equal amounts of live and commercial foods as thirdtreatment. For each treatment, 3 repeat has been considered. Breeding durationprolonged 13 weeks throughout this period, different characteristics of fry were beenstudied weekly. The breeding results showed that there was very significant correlationbetween the weight and the length of frys. However the live food provided better resultsin growth and survival rate of frys during breeding initial 6 weeks.More ever, commercial food, in some characteristics, provided more acceptable resultsin comparing the live food after sixth week. The results of this study project showedthat the artificial propagation in whitefish is possible in IRAN and the producing of itsfrys in order to restocking or introducing this species to the other Iranian suitable waterresources is executable. Based on the earned information from this study, the suitabletime for natural spawning of whitefish in IRAN (Amirkabir dam lake) determinedbetween 10th January til 20th February.
    Description: PhD
    Description: Advisors: Mohammad Reza Ahmadi Counsellors: Gh. VOSOUGHI, Hossein Emadi
    Keywords: Aquaculture ; Fisheries
    Repository Name: AquaDocs
    Type: thesis
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  • 32
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    Evaluation and comparison of ozone, hydrogen peroxide and physical treatment on fungal infection prevention and hatching rate of Iranian sturgeon (Acipenser persicus) (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19455 | 17408 | 2016-01-22 09:20:22 | 19455 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-06-29
    Description: Ozone due to having low half-life and devoid of environmental harmful effects is recognized as one of the most effective disinfectant and fungicide in aquaculture. The objective of this study is to consider the effects of periodicay ozonation, hydrogen peroxide treatment, and physical treatment capability in hatching rate enhancement. Three concentrations of 0.05, 0.1 and 0.15 ppm ozone (10 min) and peroxide hydrogen with dose of 500 and 1000 ppm in two procedures accompanied with physical treatment and without physical treatment were examined on hatching rate. In the first year, Egg ozonation (0.1 ppm) with physical treatment have been resulted the greatest hatching rate (81.4%). In the second year, egg treatment with 1000 ppm hydrogen peroxide with physical treatment have been showed the greatest hatching rate (78%). Average hatching rate for the blank control treatment (without disinfectin and physical treatment) was 32.7%. From the economic viewpoint, 0.05 ppm ozone with physical treatment, due to considerable minimizing at consumption energy and ozonation system retention costs, indicated as the best treatment than other ozone treatments for fungal control. Very low correlation (r=-0.14) have been observed between hatchery water temperature and fungal infection percentage in control treatment.
    Description: PhD
    Description: Advosors: A. Esmaili, G.H. Vosughi Counsellors: A. Keyvan, R.M. Nazari. The full text document is in Farsi only so it has not been possible for AC Editors to check the metadata input.
    Keywords: Aquaculture
    Repository Name: AquaDocs
    Type: thesis
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  • 33
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    Interactions of dietary levels of protein and energy on rainbow trout (Oncorhynchus mykiss) in desert brackish water (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19476 | 17408 | 2016-01-25 09:50:36 | 19476 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-06-29
    Description: A 3x3 factorial experiment was conducted to determine the optimum protein to energy (P/E) ratio for rainbow trout in brackish water. Three crud protein levels and three energy levels at each protein level were utilized. Diets were made in semi-purified that in all of them fish meal, casein and gelatin as the sources of protein and dextrin, starch and oil as the sources of energy were used. Each of experimental diets was fed to triplicate groups of 20 fish with an average individual weight of 81.5 g in 9 2000-1 flow trough fiberglass tanks. During this experiment water temperature, dissolved oxygen, PH and EC were 15±2°C, 6.5-8.1 mg/1, 7.7-8.6 and 25400 grills respectively. The diets were fed at a rate between 1.6-2 wet body weight% per day depended to water temperature in three equal rations and adjusted two weekly for 84 days. At each of protein levels, weight gain percent (%WG), average daily growth percent (%ADG), protein efficiency ratio (PER), apparent net protein utilization percent (%ANPU), or percent of protein deposited, specific growth rate (SGR) and condition factor (CF) were found to increase and food conversion ratio (FCR) was found to decrease with an increasing energy levels from 370 to 430 Kcal/100g. Fish fed a 35% protein, 430 Kcal/100g energy diet with a P/E ratio of 81.4 mg protein/ Kcal PFV energy, attained the best growth performance. Fat and moisture of carcass were affected by protein and energy levels of test diets while protein and ash of carcass were relatively constant in different treatments.
    Description: PhD
    Description: Advisors: M. Ahmadi Counsellors: H. Emadi, M. Farokhoi. The full text document is in Farsi only so it has not been possible for AC Editors to check the metadata input.
    Keywords: Aquaculture ; Fisheries
    Repository Name: AquaDocs
    Type: thesis
    Format: application/pdf
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    The study and production of fish sauce from Caspian Sea lam fish with traditional fermentation method and microbe and enzyme adding method and identification of important bacteria (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19475 | 17408 | 2016-01-25 09:48:26 | 19475 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-06-29
    Description: Fish sauce is a popular fermented product used in south Asian countries which is made from different small fishes in this research work it was attempted to produce fish sauce from kilka of the Caspian sea, the fish sauce was made from three models of kilka ,such as whole kilka , cooked whole kilka and dressed kilka , each of these models treated it four different fashions of fermentation such as:1- Traditional method, 2- Enzymatic method 3- Microbial method, 4- Mixture of enzyme and microb The results of this investigation showed that time of fermentation for the traditional method was six month, enzymatic method one month, microbial method 3 month and the mixture of enzyme and microb 1 month. The rate of fermentation was least for dressed Kilka, microbial and biochemical changes of Kilka fish sauce were evaluated, total bacterial count was 2.1-6.15 log cfu/ml total volatile nitrogen (TVN) in samples recorded was 250 mg /100g, the amount of protein varied between 10-13 percent, the name of commercial enzymes added was Protamex and Flavourzyme, the bacteria added was L act ob acillus and Pediococous, fish sauce containers fish and 20% salt, temperature of keeping for fermentation was 37 degree c for 6 month.
    Description: PhD
    Description: Advisors: S. Moini Counsellors: A. keyvan, Gh. Vosoughi
    Keywords: Aquaculture ; Chemistry ; Fisheries
    Repository Name: AquaDocs
    Type: thesis
    Format: application/pdf
    Format: application/pdf
    Format: 176
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  • 35
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    Bacterial and pathological study of caudal fin rot in brood stocks of Salmo trutta caspius from the propagation and breeding center of Shahid Bahonar of Kelardasht region (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/20605 | 17408 | 2016-06-29 05:00:08 | 20605 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-07-11
    Description: In order to study caudal fin rot with emphasis on Aeromonas hydrophila and Pseudomonas fluorescens in Salmo trutta caspius from the salmonids propagation and breeding center of Shahid Bahonar of kelardasht region, One hundred and eighty brood stocks having fin damage symptoms were chosen. Two bacterial samples from each fish were cultured on Aeromonas and Pseudomonas specific media. Biochemical tests, API2OE identification system and antibiogram test using six antibiotic disks were performed for diagnosing isolates bacteria and finding suitable antibiotic. Thirty samples from caudal fin of damaged fishes were fixed in 10% formalin and 51.tm microscopic sections were prepared using standard scatological methods and then stained by Haematoxylin-Eosin staining method to observe the pathological changes and also Maccallum-Goodpasture staining method to observe the bacterial colonies. In second stage of the study, bacterial samples were taken from thirty brood stocks using similar method at the first stage of sampling. For isolation and biochemical diagnosis of Aeromonas and Pseudormonas genus, the samples were analyzed by molecular research included PCR amplification (using 16S rDNA genes of the genus pseudomonas and 16S-23S rDNA intergenic spacer of the genus Aeromonas) and restriction analysis by four restriction enzymes for each genus. The results of biochemical tests showed that isolated bacteria were belonged to Aeromonas caviae and Aeromonas hydrophila (subspecies anaerogenes), Pseudomonas fluorescens, Pseudomonas putida and Pseudomonas alcaligenes while the results of API2OE identification system showed that the isolated bacteria belonged to Aeromonas hydrophila, Pseudomonas fluorescens, Pseudomonas putida and Pseudomonas aeruginosa. Restriction analysis of Aeromonas samples with Hin6l, Csp6I, Taql, and Tasl revealed three samples were different from others while restriction analysis of Pseudomonas samples with Alul, Hinfl, Rsal, and Trull showed at least five species or biovars. The results of antibiogram test showed all Aeromonas samples were sensitive to Trimethoprim, Chloramphenicol and Nitrofurazone, mostly to Nalidixic acid and Chloramphenicol, while most of samples were resistant to Erythromycin and Oxytetracycline. Pseudomonas samples were only sensitive to Nitrofurazone and mostly resistant to Oxytetracycline, Nalidixic acid, Erythromycin, Trimethoprim and Chloramphenicol. The results of light microscope study showed hyperplasia and spongiosis of the malpigian cells of epidermis, increasing of melanin pigments underlying epidermis; sever necrosis in both epidermis and dermis and also sloughing the epidermis in some cases. Occurrence of clefts through the epithelium, neovascularization, hyperemia and mild inflammatory response in dermis and separation of the fin rays also were observed. No bacterial colonies were found in the sections.
    Description: PhD
    Description: Advisors: Soltani, M.; Counselors: Sharifpour, I., Sohrabi Haghdost, I.
    Keywords: Aquaculture ; Fisheries
    Repository Name: AquaDocs
    Type: thesis
    Format: application/pdf
    Format: application/pdf
    Format: 123
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  • 36
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    Isolation and recognition Saprolegnia species from fungal infected eggs of the rainbow trout in Mazandaran province farms (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/20689 | 17408 | 2016-06-29 05:08:50 | 20689 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-07-12
    Description: Fungal infection in the eggs of freshwater fish is well known as a problematic disease. That isolation and recognition Saprolegnia fungi from fungal infected eggs of the rainbow trout in Mazandaran province was the aim of this research. For this purpose fungal infected eggs were examined from six fish farm in the fall and winter 2005-2006. The eggs with fungi were inoculated on SDA, CMA, GPagar and hemp seed and sesame seed cultures in sterile tap water at room temperature (18-24°C). In this study recognized three genera and six species Saprolegniaceae members, based on morphological characteristics which contain: Saprolegnia, Achlya, Brevilegnia. Four species were identified in the genus Saprolegnia; S.mixta, S.parasitica, S.moniliphera, S.lapponica and one species was identified in the genus Achlya; A.oblongata. S.parasitica was isolated from almost all the farms. In addition, another nine genera and species were identified; Penicillium, Aspergillus, Paeciliomyces, Acremonium, Fusarium oxysporum, F.solani , Alternaria, Helminthosporium, Mucor.
    Description: PhD
    Description: Advisors: Ebrahimzadeh Mousavi; Counsellors: Jalali Jafari, B., Yousefyan, M.
    Keywords: Aquaculture ; Health
    Repository Name: AquaDocs
    Type: thesis
    Format: application/pdf
    Format: application/pdf
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    The study of histopathological damage in heart and bulbus arteriosus in rainbow trout (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/20908 | 17408 | 2016-07-15 08:59:35 | 20908 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-07-11
    Description: This study investigated the pathological changes of heart and bulbus artrius of rainbow trout breeders in several group of ages and density. The aim of study was to consider the process and the intensity of the heart and bulbus arteriosus damages in accordance to gender, age and stocking density of trout in three fish culture center (Zarghezel, Niyak in Haraz Region,Mazandaran and Espiran in Tabriz city environs). In field research, the all records the feed and feeding type, rate of mortality, stocking density of spawners and per spawners fishes, water chemical and physical specification was screened. Stocking density was considered as the most important stressor. 10 fish specimens from 7 weight groups (less than 90g, 90 to 300g, 300 to 500 g, 500 to 1000g, 1 to 3 kg, 3 to 5 kg, over 5 kg), totally 210 specimens were sampled and heart and bulbus arteriosus were taken. Samples were fixed in 10 % formalin and transferred to pathology laboratory of veterinary faculty of Tabriz Azad University. Histopathological slides and H&E staining were prepared from these samples. In total, 47 male and 73 female samples showed cardiovascular injury (29 cases in extensive system, 41 cases in semi intensive system, 50 cases in intensive system). The most important was damages, edema and hyperemia in spongy layer of atrium and ventricle muscles, but degeneration the muscle fibers, moderate edema , minor vascular damage. Hemorrhage as the effect of severs vascular damage, thrombus, sever inflammation, sever degeneration in muscle fiber, necrosis and fibrose were further pathological changed. The results of this study showed that the severity of damage increased by increasing the age (weight) of fishes. This situation was seen in all three culturing system (extensive system, semi intensive system, recirculation system). Histopathological changes is obviously seen in samples over 500g, therefore the damages were found to be important (P〈0.05). Pathological effects and its severity in recirculation system was significantly high (P〈0.05). Comparison with two other culturing system, histopathological changed in heart and bulbus arterius between male and female was significantly different.
    Description: PhD
    Description: Advisors: Behyar, Jalali; Darush, Mohajeri; Counsellors: Iraj, Sohrabi Haghdost
    Keywords: Aquaculture ; Biology ; Fisheries
    Repository Name: AquaDocs
    Type: thesis
    Format: application/pdf
    Format: application/pdf
    Format: 81
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    An observation on the acquisition or loss of trematode (Clinostomum tilapiae) by Tilapia (Oreochromis niloticus) in culture systems (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23041 | 19325 | 2018-03-05 20:38:04 | 23041 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: The acquisition or loss of Clinostomum tilapiae parasites by Oreochromis niloticus was studied. Four groups of 25 healthy fishes were stocked in the upper part of serial experimental ponds, while another four groups of 25 infected fishes were also stocked at the rear part of the serial experimental ponds. All the groups were fed at 3% body weight with the same compounded fish feed. Acquisition or loss of parasites and growth was monitored for a period of six months. The mean relative growth rate was 11.04kg/month for the healthy fishes and 5.62g/month for the infected fishes. The mean specific growth rate was 38.75% and 31.25% for the healthy and infected groups respectively. However the results were not statistically significant (p 〉 0.05). The parasite did not multiply on the host body rather the infection rate reduced from 100% to between 44 and 78%, parasite burden was reduced from an average of 3 per fish to 2.25 while the healthy fish acquired the parasite and the average burden was 2.15. The mean values of the prevailing water quality parameters were within the optimum range acceptable in fish culture systems in the tropics.
    Description: includes:- 1 table.;9 refs.
    Keywords: Aquaculture ; Ecology ; Nigeria ; Ibadan ; freshwater environment ; Parasites ; Parasitic diseases ; Infectious diseases ; Fish diseases
    Repository Name: AquaDocs
    Type: conference_item , TRUE
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    Format: application/pdf
    Format: 296 - 298
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  • 39
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    Profitability of an economic diet in practical fish farming: a case study of vitamin C inclusion in the diet of Heterobranchus longifilis fingerlings (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23036 | 19325 | 2018-03-05 09:16:43 | 23036 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: A completely randomised design with three replicates was used for an experiment conducted to study the profitability of vitamin C inclusion into the ration formulation for Heterobranchus longifilis. Six different levels 0, 50, 100, 150, 200 or 250 mg of L-ascorbic acid (vitamin C) kg-1 diet was included in a 42.5% crude protein basal diet and fed to triplicate groups of twenty fingerlings. The groups fed diets with vitamin C had statistically significant (P〈0.05) higher final weight than the group fed the control diet without vitamin C at the end of twenty weeks study, Feed consumed was significantly (P〈0.05) lower in the group fed diet without vitamin C. There was a significant (P〈0.05) difference between the groups fed 0 and 50 mg vitamin C kg-1 diets, but no significant (P〉0.05) difference between the groups fed diets with 100, 150, 200 and 250 mg vitamin C kg-1 diet on this parameter. Mortality was significantly (P〈0.05) higher in the groups fed diet without vitamin C while there was no significant difference (P〉0.05) between the fish fed the diets with respective graded levels of vitamin C. The thiobarbituric acid reactive substance (TBARS) of the liver and whole body of fish was significantly (P〈0.05) higher in fish fed diet devoid of vitamin C. Cost per kilogram of fish base on feed input was significantly (P〈0.05) higher in the group fed diet without vitamin C than those enriched with vitamin C. However, within groups fed with vitamin C cost per kg of fish was significantly (P〈0.05) decreasing in the following order: diet 2〉 diet 6〉 diets 4, 5, and 3. There was no significant difference (P〉0.05) between fish fed diets 3, 4 and 5 with respect to cost per kilogram of fish. This study vividly showed that there is no alternative to the use of a complete diet with vitamin C in an intensive practical farming of H. longifilis geared towards optimum profit maximisation in terms of feed as one of the variable input.
    Description: Includes:-2 tables.;20 refs.
    Keywords: Aquaculture ; Heterobranchus longifilis ; Nigeria ; New Bussa ; freshwater environment ; Diets ; Feeding experiments ; Vitamin C
    Repository Name: AquaDocs
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  • 40
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    Growth performance of Clarias gariepinus fingerlings fed cooked breadfruit (Artocarpus altilis) seed meal as replacement for maize in outdoor hapas (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23040 | 19325 | 2018-03-05 20:36:36 | 23040 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: The growth performance and nutrient utilization in Clarias gariepinus fingerlings fed cooked breadfruit (Artocarpus altilis) seed meal based diet as a replacement for maize, investigated for 8 weeks. Five (5) diets of breadfruit seed meal substituted for maize at different levels of inclusion (0%; 25%; 50%; 75% and 100%) were fed to the fingerlings at 5% body weight twice daily in hapa of 1m x 1m x 1m. The hapas wee submerged in a pond and each hapa stocked with 20 fingerlings of mean weight of 5.8~c0.00g. Evaluation of growth parameters nutrient utilization of the experimental diets showed that there was no significant difference (P〉0.05) in mean final weight (MFW); specific growth rate (SGR); feed conversion rate (FCR) protein efficiency ratio (PER) and apparent net protein utilization (ANPU) among the treatments. The results suggested a net advantage of replacing dietary maize with cooked breadfruit seed meal for Clarias gariepinus fingerlings at 50% and above levels of inclusion under the condition of the experiment.
    Description: Includes:- 4 tables.;10 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Makurdi ; freshwater environment ; Fish culture ; Feeding experiments ; Growth rate ; Diets
    Repository Name: AquaDocs
    Type: conference_item , TRUE
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  • 41
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    Evaluation of different soybean-based diets on growth and nutrient utilization of Heterobranchus longifilis in aquaria tanks (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23034 | 19325 | 2018-03-05 09:13:55 | 23034 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: In order to compare the effect of raw, cooked, toasted and extruded soybean meals on the growth and nutrient utilization of Heterobranchus longifilis fingerlings, 120 pure Heterobranchus longifilis fingerlings were purchased at the National Institute for Freshwater Fisheries Research (NIFFR) improved genetic fish hatchery and randomly allocated into four different treatments with two replicates each with 15 fingerlings in 8 aquaria tanks. Four different diets containing 40% crude protein each were compounded and fed to the fish at 5% body weight for 56 days. At the end of the feeding trials, growth performance and nutrient utilization were evaluated. The results revealed that fish fed toasted soybean-based diets had highest mean weight gain (MWG) of 16.39g, specific growth rate (SGR) of 2.03%/day, and food conversion ratio (FCR) of 2.18. The fingerlings fed the extruded soybean-based diet gave the least growth performance. It could be concluded in practice, that toasted soybean-based diet is optimal for growth of Heterobranchus longifilis fingerlings.
    Description: Includes:- 5 tables.;3 fig.;7 refs.
    Keywords: Aquaculture ; Heterobranchus longifilis ; Nigeria ; New Bussa ; freshwater environment ; Diets ; Nutritive value ; Feeding experiments
    Repository Name: AquaDocs
    Type: conference_item , TRUE
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  • 42
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    Analysis of physicochemical characteristics of some freshwater bodies in Essien Udim Local Government Area of Akwa Ibom State, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23044 | 19325 | 2018-03-05 20:45:24 | 23044 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: The physical and chemical characteristics of freshwater bodies Ikot Ebak and Abeneyentem streams in Essien Udim Local Government Area, Akwa Ibom State, Nigeria were studied from (July December 1996). The mean values obtained in the two water bodies were pH (6.8~c0.12, 6.8~c0.09, respectively). Conductivity (4.9~c2.26, 5.0~c2.09 iScm-1), total dissolved solid (16~c7.58, 37~c26.9 mg/l), TSS (46~c26.0, 53~c53.1)g/l), alkalinity (17.5~c7.27, 10.7~c8S MgCaCo3/1), DO (6.98~C1.46, 8.3~C29.0mg/1), BOD (2.65~c2.44, 3.15~c2.79mg/1), Salinity (0.41~c0.12, 0.31~c0.04%o') total hardness (0.64~c0.21, 0.84~c0.42mg/l, N03-N (0.31~cO.26, 0.35~c0.29mg/l), and PD4-P (0.022~c0.0199 0.023~c.022mg/1), respectively. There were significant difference in the means of the parameters in the two water bodies except TDS, Alkalinity and Hardness. The water bodies were found to be slightly acidic with low conductivity. The properties in the water bodies were in conformity with international standards for both drinking and aquatic life.
    Description: includes:- 2 tables.;6 refs.
    Keywords: Chemistry ; Limnology ; Nigeria ; Ikot Ebak ; Nigeria ; Abeneyentem ; freshwater environment ; Physicochemical properties ; Alkalinity ; Salinity ; Dissolved oxygen
    Repository Name: AquaDocs
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  • 43
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    Evaluation of pawpaw leaf-based diets (Carica papaya) on growth and survival of African catfish (Clarias gariepinus) fingerlings reared in plastic bowls (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23049 | 19325 | 2018-03-06 15:26:25 | 23049 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: 200 fingerlings of African catfish (Clarias gariepinus) of average weight of 22.8~c0.04g were used to investigate the nutritive value of Pawpaw (Carica papaya) leaf-based diets. Five (5) isocaloric and iso-nitrogenous diets containing fishmeal protein at a rate of 0%, 25%, 50%, 75%, and 100% along with the pawpaw leaf were formulated. The diet without the pawpaw leaf meal serves as the control. The fish fingerlings were fed at 5% body weight per day for 56 days in plastic bowls. It was observed at the end of the experiment that pawpaw leaf meal was suitable as a protein supplement when incorporated at 50% replacement. The body weight gain, specific growth rate (SGR) and food conversion ratio (FCR) values of 18.68g, 1.07%/ day and 4.72 respectively were highest in diet with 50% replacement closely followed by diet with 25% replacement. Based on the results, it could be recommended that in practice 50% replacement of pawpaw leaf meal with fish meal is optimal in practical diet of African catfish (Clarias gariepinus) fingerlings. Nevertheless, complete replacement of pawpaw leaf meal decreases growth rate and should not be used in Clarias gariepinus fingerlings.
    Description: Includes: - 3 tables.;5 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Carica papaya ; Nigeria ; freshwater environment ; Fish culture ; Feeding experiments ; Diets
    Repository Name: AquaDocs
    Type: conference_item , TRUE
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  • 44
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    Effect of stocking density on the growth rates of Clarias gariepinus in a floating hapa system (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23037 | 19325 | 2018-03-05 09:18:00 | 23037 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: An experimental growth trial in floating net-hapas at three stocking densities in concrete pond was carried out. 4.68 5.25g mean individual weight fish were stocked at 25, 50 and 100 per m3. A 40% protein balanced diet was used as feed. The results of the study showed no statistical significant difference in growth among the three treatments. Food conversion ratios ranged in 1.60 to 1.82, and specific growth rates were between 3.80 and 4.16%/day. The result suggests that culture of C. gariepinus at a density of 50/m3 and production of 4.15kg/m3 in 84 days with production of 8.30kg/m3 in a growing season of 180 days is possible using the net-hapa systems enclosed in a concrete pond.
    Description: includes:- 2 tables.;8 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Alau L. ; freshwater environment ; Fish culture ; Stocking density ; Growth rate ; Floating cages
    Repository Name: AquaDocs
    Type: conference_item , TRUE
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  • 45
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    Quantification of vitamin C (ascorbic acid) requirements of Heterobranchus longifilis fingerlings (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23039 | 19325 | 2018-03-05 20:35:11 | 23039 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: A feeding experiment was conducted to quantify the minimum dietary vitamin C requirement of Heterobranchus longifilis fingerlings and the minimal dietary inclusion levels that will meet these requirements after degradation from feed processing and storage. Fish were fed a basal diet with 42.5% crude protein for a conditioning period of 2 weeks. Following conditioning, fingerlings with initial mean weight, 2.3~c0.3 g were stocked as groups of 20 fingerlings into 30 litre tanks in a mini flowthrough experimental system and fed the basal diet and experimental diets supplemented with 0, 50, 100, 150, 200, or 250 mg of L-ascorbic acid kg-1 diet obtained from TUYIL PHARM. INDUSTRIES, lIorin, included into the basal diet by replacing part of the silica component and fed to triplicate groups for 20 weeks. Fish fed the control (0 mg vitamin C kg-1) diet exhibited deficiency signs including lordosis, caudal fin deformity, skin erosion and significantly suppressed weight gain and higher condition factor. Protein efficiency ratio and specific growth rate were significantly improved with increasing levels of vitamin C up to 200mg kg-1 diet. Tissue (liver, kidney, gills and muscle) ascorbate concentration generally reflected dietary inclusion levels with the signiticant lowest level occurring in the control groups. Vitamin C analysis after feed processing revealed 18 - 21% loss. The least mean squares error regression analysis of weight gain data on inclusion level of vitamin C revealed that the minimum dietary requirement of H. longifilis is 82.2~c0.2 mg vitamin C kg-1 diet which corresponds to 100 mg of vitamin C kg-1 diet based on data from this study.
    Description: Includes:- 4 tables.;1 fig.;6 plates.;32 refs.
    Keywords: Aquaculture ; Heterobranchus longifilis ; Nigeria ; New Bussa ; freshwater environment ; Fish culture ; Feeding experiments ; Vitamin C ; Growth rate
    Repository Name: AquaDocs
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  • 46
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    Investments and employment opportunities in the aquaculture sector in Nigeria (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23042 | 19325 | 2018-03-05 20:39:37 | 23042 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: Nigeria is a large fish consuming nation with a total consumption at more than 1.2 million tonnes, with fish imports making up about two thirds (700,000 t) of the fish supply. Although the contribution of fisheries to the Gross Domestic Product is only 3-4%, it occupies a very significant position in the primary sector providing employment for over a million people (FDF Statistics) and contributing about 50% of the animal protein intake of the population, particularly the resource poor. The estimated national demand for fish is estimated as high as 1.3 million metric tons with a wholesale value of more than $US 1 billion. Of this, the Federal Department of fisheries (FDF) estimated 511,000 tones are provided domestically or only about one third of demand, with an estimated per capita fish consumption ranging from 7.5-12 kg. With the current policy thrust towards fisheries development, there is excitement among stakeholders in private sector fish farming as shown by the expansion and renovation of existing farms and investments in few fish farms and hatcheries. This has brought the industry to a retail production value of N180 million. This development is not however without some challenges. Fish producers have rushed ahead with the production without support of a developed values chain. This gap is providing an entry point for interventions to greatly facilitate expansion of services in the value chain for this exciting industry. This paper therefore seeks to provide guidance on how to strategically focus aquaculture activities to capitalise on opportunities for increased employment and incomes.
    Description: Includes:- 1 table.;2 figs.;6 refs.
    Keywords: Aquaculture ; Nigeria ; Employment opportunities ; freshwater environment ; Investments ; Personnel ; Human resources ; Fish culture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
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  • 47
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    Composition and abundance of macro-invertebrate community in earthen ponds of Akscoa Fish Farm Oruk Anam L.G.A., Akwa Ibom State, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23045 | 19325 | 2018-03-06 15:23:21 | 23045 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: Composition and abundance of macro-invertebrates, in Akwa Ibom State College of Agriculture, Fish Farm in UrukAnam Local Government Area, Nigeria, was studied from (December 2005 to May, 2006). Collections of samples were made with benthic net at weekly intervals. Stocked and unstocked ponds were selected for the study. The stocked ponds had 122 individuals macro invertebrates while unstocked pond had 160 number of individuals. The two ponds were dominated by Diptera followed by Coleoptera with single individual species. Groups which are regarded as clean water fauna were absent in both ponds. Generally, the ponds were poor in terms of number of taxa and individuals.
    Description: Includes:- 2 tables.;8 refs.
    Keywords: Aquaculture ; Ecology ; Nigeria ; Akscoa Fish Farm ; Macroinvertebrate ; freshwater environment ; Abundance ; Composition ; Microorganisms ; Microbiology ; Freshwater ecology
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    Diseases associated with livestock integrated fish farming in Nigeria: a review (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23215 | 19325 | 2018-03-17 12:47:49 | 23215 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: Just like other animals and humans, fishes are prone to diseases and predation. Diseases can be caused by one and/or combination of any of the following agents e.g. bacteria, fungi, viruses and parasites. Diseases have become a primary constraint to aquacultural development, which may affect the achievement of a desired impact for rapid development of fish culture in Nigeria. Apart from causing mortalities, they also cause loss of production quality, reduced growth, reduced fecundity, loss due to control measures and loss due to social factors associated with the farmer. This review has discussed the diseases that are associated with integrated fish farming including livestock cum fish farming, poultry-cum fish farming, Waste water fish farming, rice-cum fish farming e.t.c. The control of diseases associated with integrated fish farming requires a multi-disciplinary approach including chemotherapy, sanitation, routine hygiene, quarantine, genetic selection and immunoprophylaxis. The treatment and prevention of fish diseases follow the same principles used in chemotherapy of higher animals.
    Description: Includes:- 4 tables.;9 refs.
    Keywords: Agriculture ; Aquaculture ; Nigeria ; freshwater environment ; Fish culture ; Diseases ; Bacteria
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  • 49
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    Lysine requirement of Oreochromis niloticus (2021)
    Fisheries Society of Nigeria | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23370 | 19325 | 2018-04-10 16:05:46 | 23370 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Oreochromis niloticus was reared in 54 litre glass tanks being fed with 35% crude protein diets for 56 days. A basal diet consisting intact protein from groundnut cake and guinea com (4.56g lysine/100g protein) ,four graded levels of crystalline lysine was added to formulate diets consisting 6.87, 7.30, 7.41, 7.51 g lysine /100g protein and a reference diet of intact protein from groundnut cake, guinea com and fish meal having 5.37g lysine/100g protein was fed to six treatments in triplicate groups. The growth parameters shows there was no significant difference in the mean weight gain, specific growth rate, food conversion efficiency and protein efficiency ratio of fish fed varying levels of lysine. A maxima was obtained from the quadratic equation of food efficiency ratio against graded levels of lysine at 7.3g/100g protein which is the requirement. Carcass ash was higher with the initial fish while crude protein was highest with the the fish fed 7.3g lysine/l00g protein
    Description: Includes:- 6 tables.;22 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; New Bussa ; Fish culture ; Nutritional requirements ; Nutrition ; Feeding experiments ; Lysine
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    Management and utilization of water hyacinth (Eichhornia crassipes) for improved aquatic resources (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23439 | 19325 | 2018-05-02 08:19:22 | 23439 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Natural aquatic plants population can be healthy for any aquatic ecosystems as they serve as fish feed, play an important role in nutrient cycling, purify the water, control unwanted algal growth and support fauna including birds. Water hyacinths (Eichhornia crassipes) have proven to be a persistent and expensive aquatic weed problem. The review was carried out in the face of current global challenge (climate change) which threatens biodiversity conservation and sustainable use of natural resources so that water hyacinth could be viewed as an asset of multifarious benefits considering the revealed highlights rather than been labeled expensive nuisance. The simplest method of management of aquatic weeds is to harvest it and utilize it for cost effectiveness in production such preparation of fish and livestock feeds, bio-gas production, making of charcoal briquetting and waste water treatment for domestic and industrial use. The main problem of utilization and management of water hyacinth is its high cost of transportation to sites for utilization but, once this can be overcome as revealed in the review appropriate utilization techniques is recommended.
    Description: Includes:- 4 tables.;34 refs.
    Keywords: Aquaculture ; Biology ; Conservation ; Eichhornia crassipes ; Nigeria ; freshwater environment ; Plant utilization ; Aquatic plants
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    Comparative analysis of physicochemical characteristics of ABU and Zaria Dam (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23440 | 19325 | 2018-05-02 08:25:12 | 23440 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The physical and chemical parameters of ABU Dam and Zaria Dam were carried out between September and October 2009. The results obtained in the two water bodies were temperature 27.7 0C, pH (7.5 and 7.3), dissolved oxygen (5.8 mg/l and 5.0 mg/l), biochemical oxygen demand (1.74 mg/l and 2. 16 mg/l), alkalinity (58 mg CaC03/l and 49 mgCaCO3/l) P04-P (2.47 mg/l and 1.59 mg/l) NO3-N (3.67 mg/l and 3.47 mg/l), conductivity (54.70 ~ks-1 and 42.48 ~ks-1), total hydrocarbon (TH) (47.66 mg/l) and 48.00 mg/l) and total dissolved solids (32.68 mg/l and 25.35 mg/l) respectively. There was no significant difference in the mean values of the parameters (P〉0.05) except conductivity and total dissolved solids. The water bodies were found to be neutral with high conductivity. All the properties in the water bodies were in conformity with international standards both for drinking and aquatic life.
    Description: Includes:- 2 tables.;7 refs.
    Keywords: Chemistry ; Limnology ; Pollution ; Nigeria ; Zaria Dam ; Nigeria ; ABU Dam ; freshwater environment ; Physicochemical properties ; Pollution
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    Relationship among Tilapia guineensis fingerlings abundance and water quality variations in a brackish water reservoir in Lagos (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23442 | 19325 | 2018-05-02 08:28:15 | 23442 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: In recent times there has been an upsurge in the culture of Tilapia in Nigeria resulting in increased demand for the fingerlings which is hardly satisfied. This is due to increasing demand for table size tilapia as food fish and under-sized tilapia in the fish meal and fish canning industries in Nigeria. Collection of Tilapia guineensis fingerlings from the wild, to augment hatchery production, has been the practice and this is subject to environmental fluctuations. Multivariate regression and correlation analyses of accumulated data were used to investigate the effects of changes in water quality parameters on abundance of fingerlings of Tilapia guineensis in a brackishwater habitat in Lagos. Dissolved oxygen (DO), salinity and secchi transparency were found to be the most dominant factors affecting the abundance of Tilapia guineensis fingerlings in the Lagos lagoon. Peak period of abundance was closely associated with period of low salinity (0.50%o to 5.60%o), which coincided with the period of low transparency and low DO in the rainy season. The correlation analyses of Tilapia guineensis fingerlings with the water quality parameters yielded the following correlation coefficients (r)- 0.598; (salinity); -0.644 (transparency); -0.710 (DO); -0.566; (temperature) and 0.129 (pH). The abundance of Tilapia guineensis fingerlings in the Lagoon was ultimately defined by a suitable regression equation. This result is expected to optimize the collection of fingerlings of Tilapia guineensis from the wild and boost food fish security in Nigeria and elsewhere.
    Description: Includes:- 1 table.;1 fig.;( refs.
    Keywords: Chemistry ; Fisheries ; Tilapia guineensis ; Nigeria ; Port Harcourt ; brackishwater environment ; Water quality ; Fingerlings ; Chemical properties ; Physicochemical properties
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    Tissue distribution of heavy metals in fin fish from a tidal fish farm in South East Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23450 | 19325 | 2018-05-04 17:32:24 | 23450 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The concentration of heavy metals: Lead (Pb), Cadmium (Cd), Iron (Fe) and Zinc (Zn) in tissues of fin fish from a tidal fish farm in Calabar, South East Nigeria, was determined. The mean levels of heavy metals (~kgg-1) in gills, muscle tissues, liver and intestines of catfish were Pb: 2.39~c1.24; Cd: 0.87~c0.83; Fe: 3.96~c1.55; Zn: 8.15~c3.18. Mean levels in Tilapia were Pb: 0.035~c0.002; Cd: 0.61~c0.05; Fe: 1.09~c0.61; Zn: 2.17~c0.53. There was no significant difference (p〈0.05) in tissue concentrations of Pb and Cd whereas a significant difference (p〈0.05) was observed between Pb and Zn concentrations for both species of fish. Concentrations were also higher in liver, gills and muscle tissues than the intestines. Highest concentrations were observed in the liver and gills in both species. Generally, higher concentrations were observed in liver, gills and muscles of Catfish than in Tilapia. Concentrations of Pb and Fe in Catfish were significantly higher (p〈0.05) than the WHO limits, while Zn and Cd were lower. Tissue concentrations of all the metals in Tilapia were however, within the WHO recommended limits. The concentrations in all the fish tissues were significantly higher (p〈0.05) than in the surrounding water. The observed values in Catfish indicate environmental threat to the health of the fish and indeed the humans that consume them and therefore calls for environmental surveillance in the area
    Description: Includes:- 3 tables.;1 fig.;7 refs.
    Keywords: Aquaculture ; Pollution ; Nigeria ; Calabar ; freshwater environment ; Heavy metals ; Tissues ; Pollution ; Pollution effects
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    Spatial and temporal variations of physicochemical variables in a small 'pristine' stream in Niger Delta, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23445 | 19325 | 2018-05-02 08:32:33 | 23445 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Spatial and temporal variations of physico-chemical variables of Onu-Iyi ?Ukwu stream were studied for 12 months from March 2005 to February 2006. Three sampling stations were established along the main stream channel from source to mouth. Spatial variation in physico-chemical parameters indicated that total alkalinity, total hardness, conductivity, and nitrate-nitrogen (NO3) recorded their highest values at the upper reaches (with values 14.0mg/l, 88.09mg/l, 17.00~kscmiscm, and 0.60mg/l respectively). Dissolved Oxygen (DO) and pH had their maximum values of 8.20mg/l and 6.94 at the middle reaches. Turbidity, biochemical oxygen demand (BOD), temperature and phosphate-phosphorus (PO4) increased steadily from source to mouth. The observed seasonal variation indicated that wet season values were higher for all the parameters except temperature, turbidity, phosphate-phosphorus (PO4) and total alkalinity although the values were not statistically significant at p〉0.05. The correlation coefficient (r) showed no significant relationships p〈0.05 between physico-chemical parameters except DO and BOD with correlation values of (0.75 and -0.54) respectively.
    Description: includes:- 2 tables.;1 fig.;17 refs.
    Keywords: Chemistry ; Limnology ; Nigeria ; Onu-Iyi-Uku Stream ; freshwater environment ; Physicochemical properties ; Phosphates ; Phosphorus ; Turbidity
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    Limnological studies of Bosso dam and it's tributaries in Minna, Niger State, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23449 | 19325 | 2018-05-02 08:39:20 | 23449 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The physico-chemical parameters of Bosso Dam were analyzed weekly for a period of six (6) weeks from 29th October, 2009. In all, six (6) stations were identified within the dam. The physico-chemical parameters assessed were: temperature, dissolved oxygen, pH, alkalinity, hardness, conductivity and transparency. The results obtained from the analysis revealed slight variations in most parameters. There was no significant difference p〉0.05 in pH regardless of stations and weeks. But significant difference p〉0.05 were observed in dissolved oxygen, nitrate, temperature, conductivity, hardness, alkalinity, biological oxygen demand, transparency, in respect regard to stations. These variations could be due to influx of organic waste from surface run offs and inorganic waste deposited by man. The physico-chemical parameters observed, indicated that most of them fall with the recommended range or standard by the Federal Ministry of Environment
    Description: Includes:- 2 tables.;10 figs.;18 refs.
    Keywords: Chemistry ; Limnology ; Nigeria ; Bosso dam ; freshwater environment ; Physicochemical properties ; Chemical properties ; Physical properties ; Water properties
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    African Regional Aquaculture Centre Library: information resources and services (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23513 | 19325 | 2018-05-08 15:39:43 | 23513 | Fisheries Society of Nigeria
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    Publication Date: 2021-07-14
    Description: Effective research development is no doubt information driven and ARAC library remains the place to easily access accurate and reliable information. There is an urgent need to acquire and maintain its information resources in order to provide globally acceptable information. The production of validated research literatures by ARAC staff goes to show that the library has made itself relevant to scientist in achieving their mandate to ARAC. This Paper examines the resources and services rendered by the African Regional Aquaculture Centre library in meeting the needs of research Scientist, students and stakeholders in Aquaculture practice in the Niger Delta Nigeria. It describes the establishment of TEEAL and OARE service within the library and examines the research interest of scientist and library users with emphasis on their research areas.
    Description: Includes:-2 tables.;2 figs.;10 refs.
    Keywords: Aquaculture ; Information Management ; Nigeria ; Port Harcourt ; freshwater environment ; Information services
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    The comparative effect of fish and blood meal based diets on the growth and survival of juvenile tilapia (Oreochromis niloticus) in concrete tank (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23508 | 19325 | 2018-05-08 15:31:05 | 23508 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: An experiment was carried out to find out the comparative effect of imported fish meal, blood meal and local fish waste based diets on the growth and survival of juvenile tilapia. (O. niloticus) in concrete tank. Four diets consisting of N.I.O.M.R. pelleted feed containing 40% CP, with imported fish meal, as the control and three others formulated with fresh, boiled cattle blood and local fish waste meal at 30% CP, were fed to juvenile tilapia with average initial weight of 55.24g in four treatments and four replicates in a completely randomized design. Result indicated final body weights of 100.83, 96.54, 98.4 and 86.82g and average body length of 18.47, 18.16, 18.4 and 18.14cm, for treatments 1 (control), 2 (fresh blood based diet), 3 (boiled blood based diet) and 4 (local fish waste meal based diet) respectively, with no significant difference between the treatments (P〉0.05). The same was also true for average daily weight gain of 0.41, 0.36, 0.31 and 0.28g. However, treatment 1 and 2 had better relative weight gain 93.69 and 80.21%, than 3 and 4 at 62.37 and 64.85% respectively, (P〈0.05). The survival was 100% in all treatments. Treatment 2 was more cost effective at N539.06/Kg fish, followed by 1 with N667.52. Treatments 3 and 4 had the highest at N698.20 and N718.60 per kg fish. The trial showed that tilapia feed processed with fresh cattle blood performed as well as imported fish meal, boiled blood and local fish waste and in addition was more cost effective.
    Description: Includes:- 6 tables.;11 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; Port Harcourt ; Feed evaluation ; freshwater environment ; Feeding experiments ; Diets ; Nutritional requirements ; Survival ; Growth rate
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    Factors related with adoption of fish farming technologies in selected communities in Niger State, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (NIgeria)
    In:  http://aquaticcommons.org/id/eprint/23478 | 19325 | 2018-05-05 13:04:01 | 23478 | Fisheries Society of Nigeria
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    Publication Date: 2021-07-14
    Description: This study investigates the factors, which inhibit or facilitate adoption of fish farming technologies by individual fish farmers in Niger State. There was significant relationship between six of the ten variables investigated and these have contributed significantly (p〈0.05) towards predicting the adoption scores of the fish farmers. It is believed that proper assessment of these factors by researchers could be used by policy makers and executioners to improve adoption of fish farming innovations. Significant factors include farmers’ age, education, pond size, access to credit, sources of information and income level. Recommendations were made involving change agents and policy markers for future fisheries and aquaculture development in Nigeria. Keywords: Study, Factors, Adoption, Technologies, Fish farming, Communities, Nigeria
    Description: Includes:-5 tables.;8 figs
    Keywords: Aquaculture ; Information Management ; Nigeria ; Niger State ; Fisheries Extension Services ; freshwater environment ; Technology transfer ; Fish culture
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    Climate change: implications for fisheries and coastal aquaculture (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23531 | 19325 | 2018-05-09 13:01:07 | 23531 | Fisheries Society of Nigeria
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    Publication Date: 2021-07-14
    Description: A keynote address at the 25th annual conference of the Fisheries Society of Nigeria. The paper presented evidence of climate change in the past and discussed the issue of global warming in the past, present and future. The Greenhouse effects are some of the topics discussed. Discussed in greater detail is the Nigerian situation in the global warming and climate change. The potential impacts on aquaculture has been enumerated. The paper is concluded by given suggestionswhich mitigate the impact of climate change and called on the Federal Ministry of Environment to strengthen research and other arms of government to create a strong synergy to work towards ameliorating the impact of climate change in the country.
    Description: Keynote address at the 25th Annual Conference of the Fisheries Society of Nigeria. Includes:- 2 tables.;6 figs.;6 plates;12 refs.
    Keywords: Aquaculture ; Ecology ; Fisheries ; Nigeria ; brackishwater environment ; freshwater environment ; marine environment ; Climatic changes ; Fisheries ; Aquaculture
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    Culture trial of (Peneaus) Penaeus monodon in concrete tank (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23527 | 19325 | 2018-05-09 12:48:12 | 23527 | Fisheries Society of Nigeria
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    Publication Date: 2021-07-14
    Description: Culture trial of the Tiger Shrimp (Peneaus monodon) was carried out in one of the grow-out concrete tanks at Nigerian Institute for Oceanography and Marine Research, Victoria Island, Lagos. A total of 264 post larvae of P. monodon (PL 30) produced at the Institute’s shrimp hatchery complex were used for the experiment which lasted for 157 days. Coppens Catco feed of 0.8 - 1.2mm size was used to feed the post larvae throughout the duration of the experiment. The results showed that the shrimps grew from an initial mean body weight of 1.763g at stocking to 19.538g at the end of the experiment. The daily growth rate was 0.113g/day while specific growth rate was 1.532 %. Food Conversion Ratio (FCR) was 3.362 while survival rate was 90%. The study has shown that P. monodon can be successfully cultured in concrete tanks. However further studies aimed at improving growth rate will be undertaken.
    Description: Includes:-2 tables.;5 plates.;15 refs.
    Keywords: Aquaculture ; Peneaus monodon ; Nigeria ; Lagos ; freshwater environment ; Shrimp culture ; Crustacean culture ; Aquaculture
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    Growth, survival rate and condition factor of Heteroclarias hatchlings fed cultured Moina micrura, shell free Artemia and combination of both as starter feed (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23503 | 19325 | 2018-05-07 12:27:24 | 23503 | Fisheries Society of Nigeria
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    Publication Date: 2021-07-14
    Description: Growth (Percentage weight gain, Specific growth rate , total body length), survival rate and condition factor of Heteroclarias fry fed shell free Artemia, cultured Moina micrura and mixture of both as starter feed were investigated. 30 individual fry were placed in a 4-litre plastic bowl in three treatments of 3 replicates for 25 days in Fish Hatchery. Individual water quality parameters (water pH, temperature, Dissolved oxygen, total Alkalinity and carbon dioxide) monitored for each treatment were not significantly different (p〉0.05) from each Heteroclarias fry fed live M. micrura had the highest percentage weight gain (496.03%), Specific growth rate (3.09), percentage survival rate (88.83%) and condition factor (39.75) but these results were not significant different (P〉0.05) from those of shell free Artemia except those of condition factor. Shell free Artemia and Live M. micrura combination was observed to have the lowest fry Percentage weight gain (428.30%),. specific growth rate(2.54), % survival rate (85.50), condition factor(24.39) and total body length(1.52cm). The highest total body length was observed in shell free Artemia although not significantly different (p〉0.05) from others. The implication of using cultured live M. micrura instead of shell free Artemia as starter diet for Heteroclarias hatchlings at the critical stage of development are discussed
    Description: Includes:- 6 figs.;16 refs.
    Keywords: Aquaculture ; Heteroclarias ; Moina micrura ; Nigeria ; Keffi ; freshwater environment ; Growth rate ; Survival ; Condition factor ; Feeding experiments ; Fish culture
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    Haematological profile of blood of African catfish (Clarias gariepinus, Burchell 1822) fed sunflower and sesame meal based diets (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23506 | 19325 | 2018-05-07 12:32:20 | 23506 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The effect of substituting soybean meal with raw sunflower and sesame seed meal was evaluated using haematological indices of Clarias gariepinus fed the diets containing sunflower and sesame seed meal. Seven isonitrogeneous and isocaloric diets containing sunflower and sesame seed meal replacing soybean meal at a rate of 15, 30 and 45% were prepared. A diet without replacement of soybean meal served as control. The result of fish fed test diets showed significant (P〈0.05) difference over the fish fed control diet with respect to PCV and mean corpuscular volume (MCV). Fish fed control diet had the lowest Hb, PCV, WBC, RBC, MCV, MCHC, ESr. There was no significant difference (P〉0.05) in the fish fed control diet and test diets with respect to MCH, MCHC, ESr, Neutrophil, Monocytes, Eusinophils and Lymphocytes. Hence it can be concluded that the haemotological parameter of Clarias gariepinus is not significantly (P〉0.05) changed with increase dietary inclusion of raw sunflower and sesame seed meal.
    Description: Includes:- 4 tables.;22 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Akure ; freshwater environment ; Feeding experiments ; Fish culture ; Diets ; Nutritional requirements ; Haematology
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    Growth response of Clarias gariepinus (Burchell 1822) juveniles fed diets containing raw Mucuna utilis seed meal (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23505 | 19325 | 2018-05-07 12:31:00 | 23505 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Feeding trial was conducted in static water to assess the growth of Clarias gariepinus fingerlings fed different inclusion levels of Mucuna seed meal (MSM). Raw MSM was used at 10%, 20% and 30% inclusion levels and the performance of fish fed these diets was compared with the fish fed soybean-based diet which contained 40%protein. All diets were prepared to be isonitrogenous and isocaloric. A four by six factorial experiment with three replicates using ten fish each of average initial weight of 6.6g was carried out. Daily fish ration of five percent body weight was administered two times for twelve weeks. The specific growth rate (SGR) in diet 1 (control) was significantly (p〈0.05) higher than the other dietary groups and worsens as inclusion level increased similar trend was also observed in the food conversion ratio (FCR) and protein efficiency ratio (PER). The significantly lower growth performance of fish fed diets containing raw MSM might be due to the presence of anti-nutritional factors present raw MSM. The possibility of improving this trend through processing should be investigated.
    Description: Includes:- 3 tables.;14 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Osogbo ; freshwater environment ; Feeding experiments ; Fish culture ; Diets ; Growth rate
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    Growth of Clarias gariepinus juveniles fed five commercial feed (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23504 | 19325 | 2018-05-07 12:29:55 | 23504 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Clarias gariepinus juveniles 6.35 ~C 0.22 g weight were fed five different commercial diets for 105 days to determine growth rates. Diets were hand distributed in triplicate groups of 30 fish once daily. The diets used were Coppens, Multifeed, Eurogold, Vittal and Ajanla feeds. At the end of the experiment, the final mean weight for Coppens, Multifeed and Eurogold were 181.54 ~c 0.63 g, 179.92 ~c 0.95 g and 139.92 ~c 0.26 g respectively, while final mean weight for Vital and Ajanla were 110.11 ~c 0.23 g and 119.03 ~c 0.35 g respectively. The statistical analysis of the results showed that there were significant differences (P〈0.05) in the mean final weights. Also there was no significant difference (P〉0.05) in the mean final weight between Coppens and Multifeed. The specific growth rates (SGR) were 3.19% day-1 3.18 % day-1 and 2.94% day-1 for Coppens Multifeed and Eurogold respectively and 2.71% day-1 and 2.78% day-1 respectively for Ajanla and Vital. There were significant differences (P〈0.05) in SGR among treatments and no significant difference (P〉0.05) between SGR of Coppens and Multifeed. Based on these findings, it was concluded that feed with macronutrient combinations of 45% CP, 12% crude fat, crude fiber, 1.5%, Ash 9.5% promoted better growth rates in C. gariepinus juveniles as compared with other combinations.
    Description: Includes:- 2 tables.;21 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeriaa ; Port harcourt ; Feed trial ; Feed evaluation ; freshwater environment ; Feeding experiments ; Fish culture ; Feed efficiency ; Feed
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    Effects of replacement of fishmeal with palm grub (Oryctes rhinoceros Linnaeus, 1758) meal on the growth of Clarias gariepinus (Burchell, 1822) and Heterobranchus longifilis (Valenciennes, 1840) fingerlings (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23510 | 19325 | 2018-05-05 13:09:20 | 23510 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Clarias gariepinus (0.73 ~c 0.01g) and Heterobranchus longifilis fingerlings (0.67 ~c 0.01g) were fed five isonitrogenous diets of about 40% crude protein, with varying levels (0-100%) of palm grub meal for 12 weeks. At the end of the study, C. gariepinus and H. longifilis fingerlings fed 25% palm grub inclusion diet had the highest weight gain (5.30g and 4.05g respectively), relative (726.0% and 595.6%) and specific (1.09% and 1.00%) growth rates while those fed 100% palm grub inclusion diet showed least growth; weight gain (2.68g and 2.15g), relative (367.1% and 316.2%) and specific (0.80% and 0.45%) growth rates respectively. Food conversion and protein efficiency were also best in fingerlings fed 25% palm grub meal diet (0.70 and 1.35 for C. gariepinus; 0.75 and 1.35 for H. longifilis respectively) with decreasing efficiency as palm grub inclusion level increased in the diets. The differences in the growth and nutrient utilization of the fingerlings on the various diets were generally insignificant (p〉0.05) above 25% inclusion level of palm grub. The study showed that palm grub can be used to completely replace fish meal in mudcatfish diets. However, for optimal growth and nutrient utilization, 25% level of replacement of fish meal with palm grub meal is most adequate in C. gariepinus and H. longifilis fingerlings diets.
    Description: Includes:- 7 tables.;2 figs.;12 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Heterobranchus longifilis ; Oryctes rhinoceros ; Nigeria ; Ibadan ; freshwater environment ; Feeding experiments ; Growth rate ; Fish culture ; Diets
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    Lysine requirement and its effect on the body composition of Oreochromis niloticus fingerlings (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23512 | 19325 | 2018-05-08 15:38:22 | 23512 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The study was carried out to investigate the lysine requirement and its effect on the body composition of Oreochromis niloticus fingerlings. Two hundred and seventy fingerling O. niloticus (9.01 -11.09g) were reared in 35L plastic troughs. Six diets were formulated, containing 35% crude protein. The diets were formulated with ingredients deficient of lysine (Groundnut cake -3.23g lysine/100g diet and guinea corn -1.9g lysine/100g diet) for O. niloticus having whole body content of 7.51g lysine/100g protein. The diets consist of a basal diet (Diet I, no added lysine), while the test diets (II, III, IV and V) had 4.56g, 6.87g, 7.30g, 7.41g lysine/100g protein respectively. The reference diet was made of Clupeids (mixture of Pellonula afzeliusi and Physalia pellucida), groundnut cake and guinea corn but no added lysine (5.37g lysine/100g protein). The fish were fed twice daily (0900 and 18.00hrs) at 3% body weight for 56 days. There was significant difference in the mean weight gain and food conversion efficiency (P〈0.05). The four levels of lysine resulted in quadratic responses (P〈0.05). Calculation using regression equations from the relationship between the specific growth rate, weight gain and lysine levels show that lysine requirement for fingerling was 7.12g/100g protein respectively. The requirement of O. niloticus for lysine is 7.12g lysine/100g protein.
    Description: Includes:-6 tables;18 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; New Bussa ; freshwater environment ; Lysine ; Feeding experiments ; Diets ; Feed composition
    Repository Name: AquaDocs
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    Proximate composition of some commercial fish feeds sold in Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23511 | 19325 | 2018-05-08 15:37:02 | 23511 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A study was undertaken to analyse and compare with manufacturers’ declaration the nutrient content of some feeds available in Nigeria through proximate analysis. The commercial fish feeds collected from the markets were Adolf Calyx, Coppens, Dizengoff and Durante. Proximate composition such as moisture, crude protein, crude lipid, ash, fibre and NFE (nitrogen free extract) were analysed. In general, there was variation between analysed and company declared nutrient contents of different feeds especially the protein and lipid content of the feeds. Apart from Adolf Calyx, all the analysed feeds had protein contents of above 40% which is good for catfish production as recommended by the manufacturer. Keywords: Proximate composition, Commercial fishfeeds, Adolf Calyx, Coppens, Dizengoff, Durante.
    Description: Includes:- 2 tables.;15refs.
    Keywords: Aquaculture ; Nigeria ; Makurdi ; Proximate analysis ; Feed evaluation ; freshwater environment ; Moisture ; Ash content ; Proteins ; Lipids ; Diets ; Feed ; Feed efficiency
    Repository Name: AquaDocs
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    Sources and uses of micro-credit in poverty alleviation among fish farmers in Osun State, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23521 | 19325 | 2018-05-09 12:23:43 | 23521 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Aquaculture is one of the fastest growing food production systems in the world, Nigeria inclusive with the bulk of its output currently being produced within developing countries and with expectations for aquaculture sustainable food security and poverty alleviation. However, poverty which is a social condition characterised by the inadequacy of access to basic human needs for the maintenance and socially acceptable minimum standards of living is still prevalent. One of the major obstacles to achieving the objectives of poverty reduction through aquaculture is the inadequate credit facilities to boost production. The study therefore, this study investigates the sources and uses of micro-credit in poverty alleviation among fish farmers in Osun state, Nigeria. A two stage random technique was used to select 137 respondents from the three Osun State Agricultural Development Programme (ADPs) zones. Structured questionnaire was used to collect data on demographic characteristics, Micro-credit sources and use, occupational, income and fish production data. Data was analysed using descriptive statistics, FGT and logit model. The result shows that both formal and informal micro-credit sources were used in the area studied with high interest rate militating against the adequate use of some of the micro-credit sources. Poverty alleviation through micro-credit use will increase efficiency through the use of modern effective and efficient technology leading to greater production. The policies aimed at making micro-credit readily available should be focused on to alleviate poverty among fish farmers
    Description: Includes:- 4 tables.;1 fig.;12 refs.
    Keywords: Aquaculture ; Management ; Nigeria ; Osun State ; Microfinace ; freshwater environment ; Financial management ; Socioeconomic aspects ; Sociological aspects
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    Privatization: a policy to transform and increase the production capacity of fish in Nigeria fish industries (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23524 | 19325 | 2018-05-09 12:30:42 | 23524 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Over 200 hatcheries of fish exist in Nigeria with at least two hatcheries in each state of the federation but unfortunately over 50 percent are either non-functional or function far below their optimum production capacities. Also about 85 percent of the non-functional hatcheries belong to the government (-either federal, state, local government or institution). The associated problems with the non-functional hatcheries include: inadequate funding, poor maintenance of hatcheries facilities, high cost of feed inputs, in adequate infrastructure, differential growth and cannibalism in catfishes which result in poor fingerling harvest, low attitude and lack of commitment to government work. Privatization/ownership options are considered the best options for this paper and clues to solve the problems mentioned above through privatization are presented. Problems with privatization and private investment are also discussed. It was advised that in case the existing hatcheries are put in to full production, the national demand for fingerlings which is placed at 4.3 billion annually could be met with ease. Fingerlings production in the hatchery as the quickest revenue yielding aspect of fish farming (with high internal rate of returns and short pay back period) capable of attracting revenue within 2-3 mouths of a breeding exercise are emphasized.
    Description: Includes:- 10 refs.
    Keywords: Aquaculture ; Nigeria ; Privatization ; Hatchery ; freshwater environment ; Hatcheries ; Seed production ; Fish culture ; Fishery development ; Development projects
    Repository Name: AquaDocs
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    The rise of peri-urban aquaculture in Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23533 | 19325 | 2018-05-10 09:40:52 | 23533 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The paper traced aquacultural development in Nigeria to the colonial period in 1950s with fish farming in tilapias during which more than 200 small scale subsistence level ponds were built with some growth continuing in the rural areas. There was a bloom in farming of catfishes in 2000. The interest shown by private fish farmers has been identified as a propelling factor for aquacultural development in Nigeria. The development of private fish hatcheries has been another factor leading to the growth of aquaculture. The paper noted that social capital and its development either directly or indirectly can be identified as contributing to the success of the sectors. The increasing profit from aquaculture has led to fish farmers increasing beyond 5000 tonnes in 2009. The paper highlighted the numerous advantages which led to the expansion of the industry in Nigerian villages.
    Description: FISON EKO 2010: Invited paper. Pagination on document pp. 1-15 Include:- 1 table.;16 figs.;14 refs.
    Keywords: Aquaculture ; Nigeria ; brackishwater environment ; freshwater environment ; marine environment ; Aquaculture ; Fish culture ; Aquaculture development
    Repository Name: AquaDocs
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    Format: 114-128
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    Developing shellfish industry in Nigeria: technology and economics (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23534 | 19325 | 2018-05-10 09:44:16 | 23534 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The paper asserted that shellfish resources are poorly developed and utilized in West Africa. This was proved by the fact that in 2008 total marine shellfish capture production in West Africa was only 29,815 tonnes. The advantages of Nigeria in beefing up its production are highlighted. Some of these advantages are on extensive coast line which has not been affected by industrial pollution. The tropical climate is also an advantage for growing of cultured shellfish. The paper highlighted that to maximize the potential of shellfish Mari-culture development requires education, training, seed production technology, grow-out technology, processing and marketing. These requirements are discussed in details in the paper.
    Description: FISON EKO 2010: Invited paper Includes:- 3 tables.;9 figs.;60 refs.
    Keywords: Biology ; Aquaculture ; ASE ; Nigeria ; Coast ; marine environment ; Shellfish ; Shellfish culture ; Shellfish fisheries
    Repository Name: AquaDocs
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    Effect of dietary inulin as prebiotic on growth, survival and intestinal bacterial density of juvenile great sturgeon (Huso huso) (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19307 | 17408 | 2016-02-08 10:24:52 | 19307 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-06-25
    Description: Use of prebiotics, nondigestible dietary ingredients that beneficially affect the hostby selectively stimulating the growth of and/or activating the metabolism of healthpromotingbacteria in the intestinal tract, is a novel concept in aquaculture. An8-week feeding experiment was conducted to investigate the effects of dietaryprebiotic inulin on the growth performance, intestinal bacterial density, bodycomposition and values of blood serum enzymes in the juvenile great sturgeon(Huso huso). Three replicate groups of fish (initially averaging weight 16.14±0.38g) were fed diets containing prebiotic inulin at levels ranging from 1% to 3%. Thebasal diet was contained 3% cellulose. The results of linear regression showed therewas a negative relationship between some performance indices including weightgain (WG), specific growth rate (SGR), protein efficiency ratio (PER), net proteinutilization (NPU), energy retention (ERE), feed efficincy (FE), protein retention(PR) and supplementation level of inulin. At the end of trial, the 1% inulintreatment insignificantly showed an enhaced survival between the treatment groups.Intestinal lactic acid bacteria (LAB) increased in group treated with 1% inulincompare to other groups. No significant difference were observed in bodycomposition and level of serum enzymes (P〉0.05). Moreover there was significantcorrelation between ALT and LDH values (P〈0.01). Result obtained in this studyshows that the prebiotic inulin didn’t influence the increase of the growthperformance of juvenile great sturgeon and it is not appropriate for supplementationin the diet of beluga.
    Description: PhD
    Description: Advisors: A. Matinfar, Abdulmajid Haji Moradlu Counsellors: Abdulmohammed Abedian Kenari
    Keywords: Aquaculture ; Fisheries
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    Type: thesis
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    The study of different protein in diet and water salinity on growth and survival rate in Pacific white shrimp (Litopenaeus vannamei) (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19313 | 17408 | 2016-01-10 08:59:38 | 19313 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-06-25
    Description: In this research reared white western shrimp (Litopenaeus vannamei ,Boone, 1931) with five diet with five different protein level contain 20%, 25%, 30%, 35% and 40% and threesalinity level contain 15-17 ppt, 27-30 ppt,and 40-45 ppt researched protein percent effect andwater salinity on growth, survival, feed conversion ratio, hemolymph osmolatity,hemolymph protein and corpse protein contain.In this research was 15 sorrow with 3 repeat and used from 45 tanks with 300 liters capacity. Shrimps first weight average was about 2 grams and after 60 days culture cropped downresults:Shrimps biomass growth in 15-17 ppt salinity was higher than anther salinities who hadmeaning different with growth in 40-45 ppt salinity ( p〈 0.05). But hadn’t meaning differentwith growth 27-30 ppt salinity. survival rate in 15-17 ppt salinity was 97.03 who was lower thananother salinities. survival percent in 24-30 ppt salinity and 40-45 ppt salinity was 99.33%Highest biomass growth in different diets was in diet number 5 with 40 percent protein that ithad meaning different with another diets (p〈0.05) . although with informed to productexpense in different diets. One kilogram shrimp product expense in different diets hadn’tmeaning different (P〈0.05)Survival rate in different diets hadn’t meaning different lowest feed conversion ratio was 1.67in 15-14 salinity that hadn’t meaning different with another salinities also corpse proteinquantity in different salinities and different diets hadn’t meaning different.Hemolymph Osmolality in 15-17 ppt salinity was 573.88 mOsm/kg had meaning different withhemolymph osmolality in 27-30 ppt salinity that was 650. 380 mOsm/kg and in 40-45 ppt salinitywas 630.38 mOsm/kg.Hemolymph protein in 15-17 ppt salinity was 124.72 mg/ml had meaning different withhemlymph protein in 27-30 ppt salinity that was 136.52 mg/ml but hadn’t meaning differentwith hemolymph protein in 40-45 ppt salinity that was 128.84 mg/ml. Hemolymph protein indifferent diets hadn’t meaning different (p〈0.05).Keywords: shrimp, Litopenaeus vannamei, protein , salinity, growth, survival rate, FCR,hemolymph osmolality, hemolymph protein.
    Description: PhD
    Description: Advisors: A. Matinfar, counsellors: Abdolhamid Abedian, Mohammad Reza Fatemi
    Keywords: Aquaculture ; Fisheries
    Repository Name: AquaDocs
    Type: thesis
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    Identification and measurement of fatty acids, amino acids in roe of tuna fish (Thunnus tonggol) and its TVB and peroxide value during cold storage (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19311 | 17408 | 2016-02-08 10:25:26 | 19311 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-06-25
    Description: The first aim of this research was to identify fatty acids, amino acids composition of Thunnustonggol roe and their changes during cold storage (-18'C). The second aim was to determinethe changes of moisture, protein, fat and ash contents of the roe during one year cold storage(-18'C). 60 samples of longtail tuna (Thunnus tonggol) ovaries were randomly collected formBandar-e-Abbas landings. The samples were frozen at-30'C and kept in cold store at -18'Cfor one year. According to a time table, the samples were examined for identification offatty acids, amino acids, moisture, protein, fat, ash, peroxide and T.V.N. and their changeswere evaluated during this time. The results showed that 26 fatty acids were identified. Theunsaturated fatty acids (UFA) and saturated fatty acids (SFA) were 62.33 and 37.6%,respectively, in fresh roe. So that, DHA (C22:6) and oleic acid (C18:1) had high amounts(24.79 and 21.88%) among the UFA and palmitic acid (C16:0) was the most content(22.75%) among the SFA. The PUFA/SFA was 0.91. Also, 17 amino acids were identifiedthat essential amino acids (EAA) and nonessential amino acids (NE) were 10478 and 7562mg/100g, respectively, and E/NE was 1.38. Among the EAA and NE, lysine (2110mg/100g)and aspartic acid (1924 mg/100g) were the most contents. Also, results showed that moisture,ash, protein and fat contents were 72.74, 1.8, 19.88 and 4.53%, respectively, in fresh roe. Theeffects of freezing and cold storage on the roes showed that UFA and SFA contents havereached to 49.83 and 48.07%, respectively, at the end of cold storage. It indicated that thesecompounds change to each other during frozen storage. Also, n-3 and n-6 series of fattyacids were 32.75 and 1.61% in fresh roe. But their contents decreased to 22.96 and 1.25% atthe end of period. Among the fatty acids, 22:6 and C16:0 had the most changes. The changesof fatty acids were significantly at 95% level except for C15:1, C18:3(n-3) and C20:4(n-6).All of the amino acids decreased in frozen storage and their changes were significantly(P〈0.05). EAA was 7818 mg/100g and E/NE was 1.27 at the end of storage period. Amongthe amino acids, leucine and lysine had the most changes. Moisture, ash, protein and fatcontents were 70.13, 1.82, 19.4 and 6.51%, respectively, at the end of storage period. Theperoxide value and T.V.N. increased during storage. So that, their contents have reached to5.86 mg/kg and 26.37 mg/100 g, respectively, at the end of frozen storage. The best shelf lifeof Thunnus tonggol roe was 6 or 7 months, because of lipid oxidation and increasing ofperoxide.
    Description: PhD
    Description: Advisors: S. Moeini Counsellors: A. Keyvan, M. Yousefian
    Keywords: Biology ; Chemistry ; Fisheries
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    Type: thesis
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    Study on effects of extracted probiotics from microbial flora of digestive system on growth indices in beluga (Huso huso) and Persian sturgeon (Acipenser persicus) (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19310 | 17408 | 2016-01-10 09:29:30 | 19310 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-06-25
    Description: Isolation of Lactic Acid Bacteria (LAB) was carried out from gastro intestinaltract of beluga and Persian sturgeon at international sturgeon research instituteand PCR has been used for bacteria Identification.Two species of LAB including Enterococcus seriolicida and Leuconostocmesenteroides were isolated from Gastrointestinal tract (GI) of persian sturgeonin this study and the counts of Leu. mesenteroides (4.63×102 CFU/gr of GI)was significantly higher than other species. Lactobacillus curvatus,Lactococcus raffinolactis, Lactococcus lactis and Streptococcus sp. were alsoisolated from GI of beluga and maximum counts was belonged to Lb. curvatus(4.63×102 CFU/gr of GI) in this species. Dominant species were lyophilizedand adding to the water since start of mix feeding of sturgeon with differentcounts including 2×109, 5×109 and 9×109 CFU/gr of live food, 4 times a day.The results revealed that the maximum and minimum growth rate and protease,amylase, and lipase activity in beluga was gained by using of Lb. curvatus withtotal viable count of 9×10 9 CFU/gr of live food and Leu. mesenteroides withtotal viable count of 9×109 CFU/gr of live food.According to the results of this study, the maximum and minimum growth rateand protease, amylase, and lipase activity in Persian sturgeon was gained byusing of Leu. mesenteroides with total viable count of 2×10 9 CFU/gr of livefood and Lb. curvatus with total viable count of 9×109 CFU/gr of live food.Histological study showed that gastrointestinal development was same duringlarva rearing in control and other treatments but the size of liver was bigger intreatments that received nonspecific LAB in both species.According to the results, positive effects of using dominant specific LABbacteria for larviculture of sturgeon has been proved in this study.
    Description: PhD
    Description: Advisors: Abbas Matinfar Counsellors: Mahmoud Bahmani, Kaveh Jafari Khorshidi
    Keywords: Aquaculture ; Fisheries
    Repository Name: AquaDocs
    Type: thesis
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    The reproduction of Oreochromis niloticus (Cichlidae) in Kigera Reservoir, New Bussa (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23018 | 19325 | 2018-03-05 20:29:06 | 23018 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: The production of Oreochromis niloticus (Family Cichlidae) was carried out at Kigera Reservoir using a total of 54 0.niloticus comprising of 34 males (62.96%) and 20 females (37.04%), with 57.41 % been sexually matured. This species bred throughout the period of study. It is a matertanal mouth brooder with females species carrying eggs, hatchlings and fries in their mouth. The sex ratio of O. niloticus was 1 :2. The maximum fecundity was 1152 eggs. The relative high fecundity recorded was an indication of suitability of studied areas for fish production. The environmental factors monitored showed that dissolved oxygen ranges from 3.7 to 5.4mg/l, rainfall ranges from 34.9 to 348.5mm, temperature was between 25.5 and 34.5~'C, pH value was between 7.4 and 7.5 while the rate of sunshine was between 23/4 and 61/2 hr. The spawning of this species in their natural or hatchery condition is therefore best achieved during the peak of raining season.
    Description: Includes:- 4 tables.;2 figs.;18 refs.
    Keywords: Aquaculture ; Oreochromis niloticus ; Nigeria ; Kigera R. ; freshwater environment ; Reproduction ; Fecundity ; Spawning
    Repository Name: AquaDocs
    Type: conference_item , TRUE
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    Assessment of water quality in Kigera Fish Farm, New Bussa (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23017 | 19325 | 2018-03-05 09:26:57 | 23017 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: The physico-chemical and biological characteristics and nutrient concentration of Kigera Fish Farm ponds were monitored for two months to assess the water quality. The parameters measured were dissolved oxygen, temperature, hydrogen ion concentration, Secchi-disc transparency and zooplankton composition. Some fish species were identified in the course of study. Temperature ranged from 26 -30degreesC; dissolved oxygen ranged from 3mg/l-6.6mg/l, pH ranged 7.0 -7.2; while Secchi-disc transparency ranged from 0.19 - 0.25m. The three ponds were quite similar in these parameters. All the parameters that were investigated in this study are within the tolerable level for warm water fishes. Five different zooplankton species were identified at the Kigera Fish Farm, and were grouped according to their major categories namely: Copepods, Cyclopoids and Copepodite), Cladoceran (〈i〉Moina〈/i〉), and Rotifera (〈i〉Asplanchina〈/i〉). 〈i〉Branchionus〈/i〉 species in the Rotifers group dominated the zooplankton species in all the three ponds.
    Description: includes:- 5 tables.;7 refs.
    Keywords: Aquaculture ; Chemistry ; Nigeria ; Kigaria Dam ; freshwater environment ; Water quality ; Physicochemical properties ; Zooplankton
    Repository Name: AquaDocs
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    Honey comb potentialities as growth promoter and preservator in Clarias gariepinus diets (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23024 | 19325 | 2018-03-05 09:10:54 | 23024 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: Honey comb was involved as floating additive in fish diets at 0, 4 and 8% levels in 30% crude protein Clarias gariepinus juveniles of mean weight 30.30~c0.05g for 56 days in aquaria each measuring 60 x 30 x 30cm. Within six weeks all stages of grain weevils Oritzaphillus mecartus were associated with the honey comb diets, while those with honey comb remained as kept. Feed and fish values were better in honey comb diets. The growth, food utilization indices; feed and fish values were significantly (P〈O.05) higher in honey comb diets. Bee keeping for income and honey comb usage in fish diets were suggested to fish farmers.
    Description: Includes: 3 tables.;1 fig.;22 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; freshwater environment ; Diets ; Feed composition ; Feed preparation ; Floating ; Fish culture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
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    Physiological and biochemical study of over-ripened oocyte in the cultivated Caspian brown trout (Salmo trutta caspius) and determination of egg quality markers (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19299 | 17408 | 2016-02-08 10:20:40 | 19299 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-07-14
    Description: To determine the best time for egg stripping after ovulation and over-ripened oocyte in the Caspian brown trout (Salmo trutta caspius), the eggs were retained in theparental abdominal cavity for 40 days post-ovulation (DPO) at 7±0.6°C. Eggs were stripped every 10-day interval in 4 treatment and were fertilized with a pool of semen obtained from 8 males. Also, the physiology and biochemistry of the eggs and ovarian fluids were studied. Results showed that the level of eyed eggs and hatched alevins declined with over-ripening time: that is, the expected amounts (90.65 ± 6.28% for eyeing and 86.33 ± 6.82% for hatching) in newly ovulated eggs (0–10 DPO) decreased to 0.67 ± 1.34% and 0.49 ± 0.98%, respectively, in over-ripened eggs (30–40 DPO). However, larval abnormalities remained constant for 30-days after ovulation. During the course of oocyte over-ripening, the pH of the ovarian fluid significantly decreased and the concentration of glucose, protein, calcium, iron, and aspartate aminotransferase activity significantly increased. Moreover, the concentration of protein, triglycerides, and aspartate aminotransferase activity in the eggs also changed. In the newly ovulated egg, the yolk consisted of homogenous tissue and its perivitelline space diameter had no considerable differences. With over-ripening, the yolk became heterogeneous, while chorion diameter and micropyle did not change. The perivitelline space diameter varied among different areas. The present study demonstrated that the best time to take Caspian brown trout eggs after ovulation at 7± 0.6°C was up to 10 DPO. Among the studied parameters of the egg and ovarian fluid, egg quality was related to both ovarian fluid parameters (e.g., pH, protein, aspartate aminotransferase, glucose, cholesterol, triglycerides, calcium, iron) and egg parameters (e.g., cholesterol, triglycerides, iron, aspartate aminotransferase). Thus, these parameters can be used as a egg quality markers in this species.
    Description: PhD
    Description: Advisors: A. Matinfar, M. Soltani Counsellors: B. Abtahi, I. Pousti
    Keywords: Aquaculture ; Biology ; Fisheries
    Repository Name: AquaDocs
    Type: thesis
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    Study on the sustainability of FPC produced from Kilka (Clupeonella engrauliformis, C. grimmi and C. cultriventris) in two vacuum packaging and modified atmosphere packaging at different environmental factors (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19301 | 17408 | 2016-02-01 21:14:27 | 19301 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-07-14
    Description: Fish protein concentrate (FPC) is a healthy, sustainable and high nutritiveproduct which sanitized produced from fishes in which, protein and othernutrients are more concentrated than in fresh fishes.The aim of this research is to study on the sustainability of FPC producedfrom Kilka (Clupeonella engrauliformis , C. grimmi and C. cultriventris)in two Vaccum Packaging and Modified Atmosphere Packaging atdifferent environmental factors during six months.In our study the analysis of FPC protein showed 91.2%, lipid: 0.5%, ash:3.6%, moisture: 2.3%, Total Volatile Nitrogen: 10 ml/100gr andperoxide: 5meq/kg. Amino acids and fatty acids were also determined.Bacteria and Fungi were lower than 1000 colony. Samples are kept indifferent condition of temperature (5, 20 and 35 degree centigrade),humidity (25, 40 and 90 percent) and light and dark environment in sixmonth.Lipid rate in FPC after 6 months in VP and MAP (60% C02, 30 % N2 and10% O2), packages was decreased but was not significant (P〉0.05). It wasalso detected that increase temperature lead to more decrease in lipidcontent. Protein rate of FPC was decreased from 91.2% to 73.6% duringsix months at 35°C in VP Package and from 91.2% to 69.4% in MAPpackage. These changes were significant (P〈0.05). TVN and PV rate inFPC after 6 months in VP and MAP packages was increased but wassignificant (P〈0.05). Amino acids and fatty acids were also determined.But more changes in MAP packages was detected.
    Description: PhD
    Description: Advisors: Abbas Ali Motalebi Counsellors: Wadud Rzvylar, Aliasghar Khanipoor. The full text document is in Farsi only so it has not been possible for AC Editors to check the metadata input.
    Keywords: Chemistry ; Fisheries
    Repository Name: AquaDocs
    Type: thesis
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    Effects of Artemia enriched with unsaturated fatty acids and vitamin C on growth, survival and resistance Salmo trutta caspius larvae (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19411 | 17408 | 2016-02-07 17:01:59 | 19411 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-06-27
    Description: This experiment was conducted to investigate the effect of using n-3 HUFA andVitamin C enriched Artemia urmiana Nauplii Five difference treament were tested: forCaspian salmon (Salmo trutta caspius) larvae compare with artificial food in fivetreatment: (1) Artificial food, (2) Newly hatched Artemia (3) n-3 HUFA enriched Artemia(4) n-3 HUFA + 10% Ascorbyl Palmitate enriched Artemia (5) n-3 HUFA+20% Ascorbylpalmitate enriched Artemia during 15 days then all treatment were fed with artificial foodduring 20 days.In days of 15, larvae fed with newly hatched Artemia didn’t show significant differenceof growth rate and survival compared to larvae fed with n-3 HUFA and Vitamn C enrichedlive food (p〈0.05), However all treatment which fed live food have better growth rate andsurvival compred to larvae fed artificial food.Larvae fed with enriched Artemia with n-3 HUFA + 20% Ascorbyl palmitate has bestresult of temperature resistance at 26'C and 28'C. There is not significant differencebetween treatment (1) and (2), (3) and in this manner between (2), (3) and (4), (5)(P〉0.05).In days of 35, larvae fed n-3 HUFA + 10% and 20% Ascorbyl pamlitate show better wetweight and dry weight compared to other treatment (P〈0.05). Larvae fed n-3 HUFAArtemia showed significant difference compared to treatment (1) and (2), However there isnot significant difference between treatment (1) and (2). Larvae fed artificial food showless and significant difference of survival compared to other treatment (P〈0.05).Larvae fed artificial food show least of temperature resistance at 26'C and 28'C , However,there is not significant difference between all treatment (P〈0.05).
    Description: PhD
    Description: Advisors: Abbas Matinfar counsellors: Amin Keyvan, Gh. Vosoughi. The full text document is in Farsi only so it has not been possible for AC Editors to check the metadata input.
    Keywords: Aquaculture
    Repository Name: AquaDocs
    Type: thesis
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    Evaluate the efficiency of hydrogen peroxide and levaemisole hydrochloride in the treatment of Persian sturgeon, Chinese carp eggs and juveniles (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19453 | 17408 | 2016-02-07 17:05:31 | 19453 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-06-29
    Description: During a two years research hydrogen peroxide efficacy evaluated for Persian sturgeon, Chinese carps and common carp eggs. These series of the experiments conducted in various conditions different concentration of hydrogen peroxide include 250, 500, 750, 1,000 1,500 2,000 3,000 and 9,000 PPM used as ten and fifteen minutes baths, compared with Malachite green and natural control . In the next phase effect of Levaemisole hydrochloride as an immunostimulator which applied as 5 mg/I in twenty minutes baths from day sixth after hatch evaluated by daily mortality rate and leukocytes counts. The results shown that according fertilization percent and temperature condition hydrogen peroxide at 1,000 and 1,500 PPM concentrations is a effective antifungal agent during incubation periods of Persian sturgeon and even sometimes increasing hatching rates significantly comparing with natural controls and Malachite green. In Chinese carps although hydrogen peroxide controls water molds but it is not recommended in high temperatures because it make shortened incubation time and mold infections will decrease. Also the results shown 750 PPM concentration of hydrogen peroxide in common carp eggs controls water moulds infections and increase hatching rate significantly comparing with Malachite green and natural control. Daily mortality rates accessing of Persian sturgeon fries show that 20 minutes baths of 5mg/1 levamisole hydrochloride decreases daily mortality rate during yolk sac absorption. Nitrogenous compounds: nitrate and ammonium differ significantly between treated tanks with control. Blood leucocytes concentrations as an immune index was different significantly in treated fishes by levamisole hydrochloride comparing with controls. In Chinese carps because yolks sac absorption time is short there is not necessary to use the levamisole hydrochloride. Although treated larvae were more active than controls. As a result our suggestions is to use hydrogen peroxide in Persian sturgeon and common carp artificial propagation and also suggest the use levamisole hydrochloride for Persian sturgeon beside management method in stress and pollution condition
    Description: PhD
    Description: Advisors: Mohammad Reza Ahmadi Counsellors: A. Keyvan, M. Masoumian. The full text document is in Farsi only so it has not been possible for AC Editors to check the metadata input.
    Keywords: Aquaculture
    Repository Name: AquaDocs
    Type: thesis
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    Quantative and qualitive identification of the fatty acids in the mullet (Liza aurata), sever juga (Acipenser stellatus) and Persian sturgeon (A. persicus), considering of cold storing effects on them (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19474 | 17408 | 2016-01-25 09:45:47 | 19474 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-06-29
    Description: At the fishing season, in 2000, samples of species persian sturgeon (A. persicus), Severjuga (A. stellatus) and Mullet (L. aurata), were caught from the southern coasts of Caspian Sea and were freezes and preserved in the cold storage for one year They have also become biometery. The tissue's fillet were identified in order to determined the Fatty Acids. This was done during one year, frequently, fresh, two weeks after freezing and then monthly, respectively. So, after the extraction of lipids from the tissues and methylation, was injected to the gas-liquid Chromatography. After calibration, identified Fatty Acids were compared with standards according to their Retention Times. Peroxid value, lipid content and humidity were controlled. The unsaturated Fatty acids had The most amount, and a plenty of Polyunsaturated Fatty acids (PUFA) were observed, so that linoleic (C18:2), a-linolenic (C18:3), Arashidonic (C20:4), EPA (C20:5) and DHA (C22:6) Fatty acids had high amounts. The w-3, PUFA were more in comparison with w-6. The effects of freezing and cold storing on the fish fatty acids , were evaluated by the statistical tests , like SPSS, Tukey, Homogenous and Anova, and showed that in some species, a group of Fatty acids, specially PUFA, had some variation. The peroxide value that indicates the lipid deterioration, increased during toring. So, the best term if preserving in the cold storage, were determined and their Nutrition value and Medical applications due to their consumption were investigated.
    Description: PhD
    Description: Advisors: Sohrab Moeini Counsellors: Amin Keyvan, Mehdi Yousefian
    Keywords: Chemistry ; Fisheries
    Repository Name: AquaDocs
    Type: thesis
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    The survey of sexual maturity in Mugil cephalus so measuring sex hormones and histologic studies (2021)
    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19473 | 17408 | 2016-02-06 09:11:42 | 19473 | Islamic Azad University, Science and Research Branch, Tehran
    Details
    Publication Date: 2021-06-29
    Description: In this study the process of female gray mullet brooders was carried out by using histological study and masurment of sex steroids. Results of histological studies showed that oocyte of gray mullet brooders in Gomishan Rearing Center conditions of develop to the end of yolk globule stage. The results were observed with oocyte in chromatin nucleolar stage (first stage) with means of diameter of 20 p m, in August, perinucleolar stage (second stage) in September with mean diameter of 87 p m, yolk vesicle stage (third stage) in October with mean diameter 200 p m and yolk granules stage (forth stage) from October to November with average diameter of 180 — 650 p m. For the reason of stopping oocyte develop at the end of fourth stage, hormonal induction to final oocyte maturation and ovulation was used. For this purpose, carp pituitary , HCG and LRH-A2 with different combinations were used in two stages, second injection was used 24 hours after first injection. 15 females brooders were divided in 5 groups, different hormonal combinations were injected to four groups and to fifth group as control, only saline, was injected. The process of female brooder rippening in hormonal induction was studied via masurment of sex steroids including 17 a - hydroxy progestrone, estradio1-17)6 and testosterone. Blood samples were collected from caudal vein during first injection, 24, 30 and 48 hours after the first injection. At the same time, for distinguishing histological changes the sample has been attained from the gonads Sex stroid fluctuation patterns in different brooder groups that injected hormon were similar, however hormonal composition had similar effects. All brooder that their oocyte in the beginning of hormonal injection were At the end of fourth stage with oocyte diameter average of 600 p m received to final maturation and ovulation. The brooder that its oocytes were At the begining or mid-fourth stage did not show ovulation but hormonal induction caused oocyte develop at the beginning of fifth stage. Study of 17-hydroxy progestrone fluctuation showed that the maximum level of this steroid (0.347 ng/ml) measured 30 hours after the first injection and was significantly higher (p〈 0.05) than those of control group. So, 17-hydroxy progestrone is probably precursor of maturation inducing steroid (MIS). However the maximum level of that observed was coincident with germinal vesicle breakdown, oil droplets coalescence and dissolution of yolk granuls The maximum levels of esteradiol— 17/0 and testosterone (3.778 and 16.801ng/ml,respectively) in spawned brooders,were observed 24 hours after the first injection. levels of those steroids were significantly higher (p〈0.05) than control group. Maximum level of sex steroids in the brooders that did not spawn to the end of treatment was observed with more delay than those in spawned brooders. Therefor maximum level of 17a-hydroxy progestrone (0.264 ng/ml) in those brooders observed in fourth sampling time and the maximum levels of estradio1-17a and testosterone (2.944 and 18.993 ng/ml, respectivly)observed in third sampling time that was significantly higher (p〈0.05) than those of control group. For the study of stress effect on brooders during the hormonal induction, level of cortisol was measured in every sampling time. level of cortisol had high fluctuation that showed handling level and stress effect on brooders. However maximum level of cortisol in majority of brooders was dominant in third sampling time that was coincident with final maturation.
    Description: PhD
    Description: Advisors: Shahrbano oryan, Mohammad Reza Ahmadi Counsellors: Abdolmajid Haji Moradlo, Shahla Jamili. The full text document is in Farsi only so it has not been possible for AC Editors to check the metadata input.
    Keywords: Aquaculture
    Repository Name: AquaDocs
    Type: thesis
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    Effects of lipid on growth and feed utilization of Heterobranchus longifilis fingerlings (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23016 | 19325 | 2018-03-05 20:27:12 | 23016 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: A study was carried out to examine the effect of lipid level on growth and feed utilization of Heterobranchus longifilis. Fingerlings of H. longifilis (28 days old (0.7 ~c 0.05g) were fed three formulated diets with three levels of lipid (7.00%, 12.5% and 18.0% of dry matter) at one level of protein (35.0% crude protein dry matter (OM) basis) for eight weeks. Weight gain (g) and specific growth rate (SGR, % day-1) values indicated that fish fed diets with 7.0% and 12.5% lipid exhibited higher growth performance. Lowest growth was recorded for fish fed diet with 18.0% lipid. Feed intake (FI, g fish-1) was also significantly (P 〈 0.05) affected by dietary lipids and tended to decrease with increasing lipid levels. Fish that showed the highest FI were those that were fed the 7% and 12.5% lipid diets. Feed conversion ratio (FCR) values indicated that diets containing 12.5% and 18% lipid were more efficiently utilized. No significant differences in muscle composition were observed among fish fed the different diets. There was a linear relationship (P〈0.05) between dietary lipid level and liver lipid. Hepatosomatic index (HIS) increased with dietary lipid level. The results indicated that H. longifilis fingerlings performed best with the diets containing 7.0% and 12.5% lipid when protein concentration was 35.0% and, reduced growth and increased body fat were evident when dietary energy increased from 19.06 to 20.54 kJg-1.
    Description: Includes:- 3 tables.;35 refs.
    Keywords: Aquaculture ; Heterobranchus longifilis ; Nigeria ; Feed Utilization ; freshwater environment ; Fish culture ; Lipids ; Growth ; Feed efficiency ; Feeding experiments
    Repository Name: AquaDocs
    Type: conference_item , TRUE
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    Intraspecific hybridization studies in three strains of Clarias gariepinus (2021)
    Fisheries Society of Nigeria | Lagos
    In:  http://aquaticcommons.org/id/eprint/23022 | 19325 | 2018-03-05 09:09:30 | 23022 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-12
    Description: Intraspecific hybridization studies were carried out in three strains of Clarias gariepinus obtained from three ecological zones in Nigeria: rainforest; (Onitsha strain), Guinea savanna, Kainji strain) and Montanne vegetation, (Jos strain) with the aim of improving the growth performance of the species. Nine genetic mating combinations were generated from the three strains and were successfully induced under controlled hatchery conditions. Indoor and outdoor growth parameters were monitored. The 19 days growth indoors showed significant difference (P〈O.05) in weight gain. Highest weight gain (2.76g) was obtained in Jos parental strain and cross involving female Jos and male Kainji, while the least was recorded in female Kainji and male Onitsha (0.062g). The 50 days outdoor growth performance also showed significant difference between the genetic mating combinations. Maximum weight gain (464.57g) was observed in female Kainji and male Onitsha, while female Jos and male Kainji gave 263.94g weight gain. There was no significant difference (P〉0.05) in length in both indoor and outdoor rearing. Based on this study, the cross-involving female Kainji and male Onitsha is recommended for fingerling production of Clarias gariepinus.
    Description: Includes:- 4 tables.;1 fig.;4 refs.
    Keywords: Aquaculture ; Fisheries ; Clarias gariepinus ; Nigeria ; freshwater environment ; Hybridization ; Breeding ; Genetics ; Hybrid culture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
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    Hatchability and survival of H. longifilis fertilized at varying latencies (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23307 | 19325 | 2018-03-30 15:16:37 | 23307 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: In determining the optimum latency period of H. longifilis, of which the hatchability and higher Survival percentage were used as a determining factors to determine the optimum latency period of H. longifilis. The result from these varying latencies period shows that the best latency periods at the ambient temperature of 26degreesC, that support mass production and higher survival of H longifilis ranges between 15-19 hours. There was low or zero hatchability from the egg stripped early and the one stripped late.
    Description: Includes:- 1 table.;8 refs.
    Keywords: Aquaculture ; Heterobranchus longifilis ; Nigeria ; Hatching ; Survival ; Breeding ; Induced breeding
    Repository Name: AquaDocs
    Type: conference_item , TRUE
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    Some aspects of the physico-chemical parameters of Kontagora Dam, Niger State Nigeria (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23319 | 19325 | 2018-03-30 15:34:16 | 23319 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The seasonal variations in the physicochemical parameters were studied from January, 2007 to December 2007, in Kontagora Reservoir, Niger State, Nigeria. The physico- chemical parameters were determined bi-monthly , using the following methods , temperature using mercury thermometer in degree centigrade, transparency using Secchi-disc , Pye Unicam model 292 meter used for pH and electrical conductivity. Dissolved oxygen by modified Winklerazide method, water hardness and Phosphate- phosphorus by method of Lind (1979), total alkalinity by standard method described by Boyd(l979) , Nitrate- Nitrogen by Phenoldisulphonic acid method. The rainy season mean values for water temperature, depth, pH, Nitrate-Nitrogen, were significantly (P〈0.05) higher than those for the dry season. However, for transparency, conductivity, dissolved oxygen, hardness, alkalinity, phosphate-phosphorus and total dissolved solid, the dry season mean values were higher than the rainy season mean value. As in most other Africa inland water bodies, there was seasonality in the physicochemical parameters variables. The torrential rains of the dam environment, the characteristics trade winds of the dry season, effect of deforestation, fertilizer application, herbicides, insecticide and other chemical factors might have contributed to the fluctuations of some of the physicochemical parameters detennined in the Reservoir.
    Description: Includes:- 2 tables.;1 fig.;39 refs.
    Keywords: Chemistry ; Nigeria ; Kontagora L. ; freshwater environment ; Physicochemical properties ; Seasonal variations
    Repository Name: AquaDocs
    Type: conference_item , TRUE
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    Assessment of feeds and feeding techniques adoption in Ijebu Ode zone of Ogun State Agricultural Development Programme, Nigeria (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23284 | 19325 | 2018-03-28 16:08:15 | 23284 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: The study was conducted to assess the feeds and feeding techniques adopted in fish farming in the six extension blocks of Ijebu-Ode zone of the Ogun State Agricultural Development Programme, South Western Nigeria. The areas covered are Ala, Ago-Iwoye, Isonyin, Ijebu-Igbo, Ijebu-Ife and Ibi-Ade. Primary data were obtained from ninety fish farmers with well structed interview guides while combination of purposive and convenience sampling procedure was used in selecting the fish farmers. The result obtained showed that majority (34%) of the respondent fell within the economic active age distribution of 40-49 years, male (87%) married (90%:Christian 73.3%), tertiary education (47.7%), farming experience (54.4%), membership of cooperative society (63.3%),household size of above five (55.6%), annual income of above N51,000 (94.4%) and 34.4% of the respondents sourced their finance from personal saving. Most of the fish farmers adopted use of concrete tanks, intensive and semi-intensive culture system, culture Clarias and Heterobranchus species, produced about two tons per culture circle of six months. Majority (61.1%) of the respondents combine use of supplementary feed because of readily available desired feed.Recommendations are availability of credit and subsidies facilities, accessibility feed supplies, farmers’ cooperative, enabling government policies and farmers training and extension service provision.
    Description: Includes:- 8 tables.;3 figs.
    Keywords: Aquaculture ; Clarias ; Heterobranchus bidorsalis ; Nigeria ; Ogun State ; Fish Feed ; freshwater environment ; Feed ; Fish ; Fish culture ; Cultures
    Repository Name: AquaDocs
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    Local plant ingredients use in aquafeeds: a review (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23288 | 19325 | 2018-03-30 14:43:29 | 23288 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: The cost of fish feeds can be significantly reduced if some locally available ingredients are incorporated in feed production. While soybean and maize remain best choices as plant protein and energy sources respectively, other less popular legumes reviewed in this paper can be used as substitutes, especially as partial replacers for these nutrient sources that have high food value for human population. Their use as human food makes soybean and maize relatively costlier than the winged, Psophocarpus tetragonolobus, Aacha, (Digitaria exilis), Cassia fistula and Bamara been shown to have good replacement values in diets for fish. It is recommended that more oils seeds; legumes and nuts suitable ingredients are found that they have little value as nutrient sources for human population, their cost will be less and this will enhance the profitability of the aquaculture enterprise.
    Description: Includes:- 28 refs.
    Keywords: Aquaculture ; Nigeria ; Fish feed ; freshwater environment ; Feed ; Feed composition ; Feed preparation ; Feeding experiments ; Chemical composition ; Feeding
    Repository Name: AquaDocs
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    Effect of feeding Colocasia (Colocasia esculenta (L) Schottl corn flour as a part of energy supplement on growth and nutrient utilization in Clarias gariepinus (Burchell, 1822) fingerlings (2021)
    Fisheries Society of Nigeria | Zaria (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23297 | 19325 | 2018-03-30 15:00:59 | 23297 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The objective of this study was to compare the nutritive value of boiled Colocasia esculenta flour (CECF) with that of yellow maize in practical rations of fingerlings. Boiling resulted in a slight increase in crude protein content and significant (84.5%) decrease in oxalate content. Five is oproteic (30% crude protein) and isocaloric (15.46 Kjg-1) diets were formulated. The control diet contained maize as the principal dietary energy source, while flour produced from boiled Colocasia corn progressively replaced maize at 5 inclusion levels (0%, 20%, 40% 60% and 80%). The experimental diets were fed to triplicate group of Clarias gariepinus fingerlings (mean weight 2.05~c0.5g) at 3% body weight day-1. Growth performance expressed as weight gain, specific grown rate (SGR) and nutrient utilization expressed as feed conversation ration (FCR), protein efficiency ration (PER) were assessed. There was a trend of decrease in weight gain with increase in inclusion level of CECF. Weight gains of groups of C. gariepinus fed up to 60% inclusion level of CECF were nog significantly (p〉0.05) different from the group fed the control diet, the same trend was observed for SGR. FCR and other parameters were poorer (p〈0.05) in digestibility coefficients among the different groups, also that carcass composition did not vary significantly (p〈0.5) among treatments. Results also indicate that CECF is an acceptable ingredient that can replace maize up to 20% inclusion in C. gariepinus rations.
    Description: Includes:- 4 tables.;13 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; freshwater environment ; Feeding experiments ; Nutritional requirements ; Nutrition ; Fish culture
    Repository Name: AquaDocs
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    Length-weight relationship and condition factor of Clarias anguillaris from the wild and cultured in Nigeria (2021)
    Fisheries Society of Nigeria | Zaria (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23306 | 19325 | 2018-03-30 15:14:35 | 23306 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The correlation coefficient (R2) for Jos (cultured, Clarias anguillaris was 0.8367 while the coefficient of b was 3.1046. The correlation coefficient (R2) for Jos (wild) showed 0.7785 while the coefficient b was 3.4779. The correlation coefficient (R2) for Yola (wild) revealed 0.8637 and the coefficient of b was 2.4785. The results showed that there was correlation of length and weight in all the samples though Jos (cultured and wild) had positive allometric growth while Yola (wild) had negative allometric growth.
    Description: Includes:- 1 table.;1 fig.;9 refs.
    Keywords: Aquaculture ; Ecology ; Fisheries ; Clarias anguillaris ; Nigeria ; freshwater environment ; Length-weight relationships ; Condition factor
    Repository Name: AquaDocs
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    Format: 136-139
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    Growth improvement of F1 generation of Clarias gariepinus through selective breeding (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23309 | 19325 | 2018-03-30 15:18:56 | 23309 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Selective breeding studies were carried out in four genetic mating combinations of Clarias gariepinus with the aim of improving its growth performance. F2 intraspecific and backcross were produced using the best male and female of the best genetic mating combination in the F generation in crosses of three wild strains of Clara gariepinus. The highest percentage hatchability (75%) was recorded in female Kainji parental and male Kainji F1. and the least (53.67%) in female and Male Kainji Fl. The cross involving female Kainji F1. and Male Kainji Parental had the best survival (49%) indoor and also best (38.67%) outdoor, while the least (37.67%) was recorded in female Kainji parental and Male Kainji F1 and also gave the least (32.67%) outdoor. The female Kainji F1, and male Kainji parental gave the best growth performance (1.61 g) at 19 days indoor rearing, while female and male Kainji parental gave the least (1.50g). At the end of seven months rearing outdoor, the female Kainji parental and male Kainji F1. gave the best growth performance of(222.49g) and the least (180.66) was recorded in female Kainji F1 and male Kainji parental.
    Description: Includes:- 3 tables.;2 figs.;14 refs.
    Keywords: Aquaculture ; Fisheries ; Clarias gariepinus ; Nigeria ; Fish genetics ; fish breeding ; freshwater environment ; Genetics ; Breeding ; Fish culture ; Growth rate ; Hybrid culture ; Hybrids
    Repository Name: AquaDocs
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    Format: 147-152
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    The growth response of fingerlings of O. niloticus in sublethal test to paraquat (2021)
    Fisheries Society of Nigeria | Kaduna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23316 | 19325 | 2018-03-30 15:28:47 | 23316 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The initial mean wet weight of the test fish were 7.64:~c 1.3 for the control and 6.33~c 0.9, 6.88~c 0.9 and 6.2~c 0.7 for the fish exposed to 1.02, 1.40 and 2.0mg/l of paraquat in water respectively. Growth was estimated from the sum of the individual wet weights of the fish at 2, 4, 6 and 8 weeks of exposure to the toxicant and expressed as percent Cumulative wet weight gain. The results showed that the cumulative percent wet weight gain in the control group increased from 10.34% at 1 week to 36.13% at 8 weeks. The growth of fish that were exposed to 1.02, 1.04 and 2.00mg/l increased from 3%, 0.44% and 1.55% at 1 week to 30.81 %, 9.59% and 19.81 % at week 8 respectively. A statistically significant difference in growth rate of the treated and control was observed (p〈0.05).
    Description: Includes:- 4 tables.;5 refs.
    Keywords: Aquaculture ; Pollution ; Oreochromis niloticus ; Nigeria ; Paraquat ; freshwater environment ; Fish culture ; Growth rate ; Growth ; Sublethal effects ; Toxicity
    Repository Name: AquaDocs
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    Format: 181-184
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    Fertilization, hatchability, survival and larval biometry in interspecific and intergeneric hybrids of Clariid catfishes (2021)
    Fisheries Society of Nigeria | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23322 | 19325 | 2018-04-06 15:44:54 | 23322 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Interspecific and intergeneric hybridization studies were carried out in H. longifilis, C. gariepinus and C. anguillaris under controlled hatchery conditions to estimate their aquaculture potential in terms of fertilizability, hatchability and survival. Fertilization rate in all the nine genetic crosses ranges from 60-87.5%, the fertilization rates of the parentals being significantly higher(P〈0.05) with highest value of 87.5% obtained in C. gariepinus. The intergeneric hybrids had the lowest rate of fertilization. Hatchability ranges between 75- 88.1 %, with the parental C. anguillaris being slightly significantly higher than the other genetic combinations. C. anguillaris x H. longifilis I had the lowest hatchability and there was no significant difference (P〈0.05) in percent hatching among the the interspecific hybrids. The survival of all the nine genetic crosses from hatching up to the end of the two weeks indoor rearing period ranges between 78-89%, which wasn't significantly different among the interspecific and intergeneric hybrids. C. anguillaris and C. gariepinus had the highest percent survival which was significantly different from all the other mating combinations. The intergeneric hybrid larval had significantly greater (P〈0.05) length in comparison to the interspecific hybrids. H. longifilis and the hybrids produced from its eggs had greater body weight than that of C. gariepinus and C. anguillaris
    Description: Includes:- 2 tables.;25 refs.
    Keywords: Aquaculture ; Fisheries ; Heterobranchus longifilis ; Clarias anguillaris ; Clarias gariepinus ; Nigeria ; New Bussa ; freshwater environment ; Fish culture ; Hatching ; Survival ; Interspecific relationships ; Hybrids ; Hybridization
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    Growth and production of fingerlings of Dutch Clarias gariepinus in indoor tanks in arid zone, Nigeria (2021)
    Fisheries Society of Nigeria | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23321 | 19325 | 2018-04-06 15:38:18 | 23321 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Study on the growth and percentage survival of seasonal induced breeding was carried out at the Federal College of Freshwater Fisheries Technology Baga. About 40,414 fingerlings were produced with percentage survival of 81.1 % at water temperature of 28degrees C between April and May, 2009. The average weight of fingerlings produced was 1.54 g with average standard and total length of 3.0 cm and 3.5 cm respectively. However, environmental factors that could hinder mass production of Dutch Clarias fry/fingerlings stocked at low and high stocking densities were monitored for eight weeks at 3.6 m2 indoor concrete tanks with water aeration using flow-through system. The percentage survival of 83.5% and 92.5% were obtained after the period of 8 weeks. The fry/fingerlings were fed with Artemia mixed with powdered feed of 35 % crude protein. The study shows that for Dutch Clarias fry/fingerlings production and management, smaller concrete tanks with flow-through mechanism are required and 3.6 m2 should not be stocked with more than 3,500 fingerlings per tank in the first 8 weeks before transferring them to production ponds. It was observed that apart from efficient water aeration, constant feeding and sampling of fingerlings will increase growth rate, increase resistance to disease and uniformity in size of the Dutch Clarias. The mean water temperature measured in this study ranged from 27.5degrees C in April and 28.5degrees C in May while pH ranged between 7.5 and 7.3 in April and May, respectively.
    Description: 4 tables.;8 refs.
    Keywords: Aquaculture ; Clarias gariepinus ; Nigeria ; Baga ; freshwater environment ; Fish culture ; Freshwater aquaculture ; Pond culture ; Survival
    Repository Name: AquaDocs
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    Comparative studies on zooplankton production using different types of organic manure (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23456 | 19325 | 2018-05-04 17:45:41 | 23456 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: This study compares the species composition, diversity and abundance of zooplankton produced, using three different sources of organic manure as culture media. The study lasted for twenty-eight (28) days. Nine (9) concrete tanks, each of dimension 1m x 1m x 1m, were respectively filled with one hundred and fifty (150) litres of water from the same source and used for the study. The tanks were randomly grouped in threes and labelled A1 ? A3, B1 ? B3 and C1 - C3. Two kilograms of cow dung mixed with 1 Kg of humus tied in a porous bag was put into each of tanks A1 ? A3. Tanks B1 ? B3 received 2 Kg of poultry droppings and 1 Kg of humus while tanks C1 ? C3 received pig dung and humus in the same proportion. Zooplankton was harvested weekly by the horizontal trawl method, using a micro - filament plankton net of 50 ~km-1 mesh size and collected in a 50 ml glass bottle. The samples collected were stored in 10 % buffered formalin. Samples collected were identified and enumerated in the laboratory using a binocular dissecting microscope at a magnification of x100. Data collected were analysed, using one-way analysis of variance (ANOVA) and means were separated using Duncan’s multiple range test (DMRT). Mergerlef’s diversity indices was used to test for species diversity in each of the culture media. Result showed that total number of individuals produced was highest in cultures using poultry droppings. This was however not significantly different (P〉0.05) from those cultured using pig dung, but was significantly different (P〈0.05) from those cultured using cow dung. Result further revealed that cow dung produced more rotifers, poultry droppings produced more cladocera pig dung more copepods. In terms of species diversity, poultry droppings culture was more diverse and even, compared to those from the other cultures. Thus poultry droppings is the preferred media for use in zooplankton culture to feed fish and fish larvae.
    Description: Includes:- 2 tables.;13 refs.
    Keywords: Aquaculture ; Nigeria ; freshwater environment ; Zooplankton culture ; Cultured organisms ; Organic matter ; Food organisms
    Repository Name: AquaDocs
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    Format: 247- 252
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    An overview of the importance of probiotics in aquaculture (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23467 | 19325 | 2018-05-05 12:43:00 | 23467 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Probiotics are live microbes that may serve as dietary supplements to improve the host. Development of probiotics in aquaculture will reduce the list of antimicrobial drugs which were prophylactic alone and which possess potential hazards to man who consume them. Probiotics was used to reduce mortality in fingerlings of some important fish. Probiotics is cost effective and useful despite the fact that its usefulness has not been proved in fishes unlike land animals.
    Description: Includes:- 11 refs.
    Keywords: Aquaculture ; Nigeria ; freshwater environment ; Microorganisms ; Food organisms ; Aquaculture
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 311-313
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  • 99
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    Productivity indicators and best management practices situation in aquaculture industry in Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23472 | 19325 | 2018-05-05 12:54:38 | 23472 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A study was conducted in February to March 2010 to analyzed constraints and identifies research priorities for development of aquaculture in Nigeria. It incorporated a cross-sectional analysis of participatory approach involving consultations with relevant stakeholders across the five agro-ecological zones of Nigeria. Consultations were made with Research Institutes and their training arms, the Fisheries Colleges; Universities, the Federal Department of Fisheries, Fish Farmers’ Organizations (especially Catfish Farmers’ Association of Nigeria, CAFAN), Agricultural Development Projects (ADPs), Non-Governmental Organizations (NGOs), Fisheries Society of Nigeria (FISON), National Special Programme on Food Security (NSPFS), Input Dealers, some private farmers and the private sector focused Catfish Farming Development Programme of the International Finance Corporation (IFC). Extensive review of relevant literatures related to aquaculture development in Nigeria and global perspective was carried out. A component of the study was to analyze the situation of the industry in terms of productivity levels and best management practices compared with global standard. Findings reveal that the best practice ethics is not yet in place in the industry. This results in poorly designed fish culture facilities, improper management, low fish survival rate in hatcheries and production ponds, resulting in low productivity and poor returns on investment. The major constraints to the growth of the industry include low quality of consultancy services, high cost of imported feeds and drugs, high cost and scarcity of fast growing fish seeds, lack of access to finance, prevalence of diseases and pests, poor quality of consulting services and absence of guidelines to regulate conduct of business in the industry along the production and supply value chain. Although the Nigerian aquaculture industry boast of the largest manpower (in that sub-sector) in Africa; the quality of business development services are considered low. Research Institutes and Universities have regular funding problems for aquaculture research, poor infrastructures, and lack of exposures of staff to regular trainings to enable them be at par with global expertise on aquaculture development.
    Description: Includes:- 3 tables.;3 figs.;9 refs.
    Keywords: Aquaculture ; Nigeria ; Fish Culture Management ; freshwater environment ; Fish culture ; Pond culture ; Aquaculture techniques
    Repository Name: AquaDocs
    Type: conference_item , TRUE
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    Format: 395- 405
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    Social structure of fish farmers in Osun State, South-West Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23473 | 19325 | 2018-05-05 12:56:09 | 23473 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A survey of seventy-two selected fish farms in Osun State South-West Nigeria was carried out to determine the social status of the fish farmers. Structured questionnaires were used to collect information on age, educational background, marital status, mode of operation and type of culture embarked upon by the farmers among others. Data were analyzed using descriptive statistics. Results showed that most fish farmers (58.3%) in the state were male and were aged between 31-50 years old.91.7% of fish farmers were married and 95.8% had formal education. 63.9% adopted polyculture system. Tilapia and catfish were the two main species being cultured and 75% produced table fish while only 5.6% were involved in fish breeding. 83.3% practised fish farming on part-time basis and 66.7% were involved in non-agricultural occupation to supplement their production. 86.1% owned land either by inheritance or purchase, 8.3% operated on leased land and 5.6% rented the land upon which they operated. 75% of the respondents got their capital from personal savings, 11.1% from cooperatives, and only 5.6% had access to bank loans. 52.8% were regularly visited by extension agents 16.7% were occasionally visited while 30.5% were seldom visited. Only 27.8% belonged to farmers’ association.
    Description: Includes:- 2 tables.;1 fig.;10 refs.
    Keywords: Aquaculture ; Sociology ; Nigeria ; Osun State ; freshwater environment ; Fish culture ; Intensive culture ; Sociological aspects
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    Format: application/pdf
    Format: 406-411
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