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  • 1
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    Proximate composition and amino acids profile of smoked catfish Clarias gariepinus and tilapia Oreochromis niloticus (2021)
    FISON | Lagos, Nigeria
    In:  http://aquaticcommons.org/id/eprint/23226 | 19325 | 2018-03-18 14:51:17 | 23226 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-13
    Description: The proximate composition and amino acids assay of smoked Clarias gariepinus and Oreochromis niloticus were determined using standard procedures. The mean proximate composition of Oreochromis niloticus are 8.9% moisture, 16.00% lipids, 5.6% ash, 44.5% crude protein, 0.42% crude fiber and 24.9% NFE while Clarias gariepinus has 8.19% moisture, 15.55% lipids, 4.725 ash, 40.46% crude protein, 0.50% crude fiber and 30.58% NFE. There is therefore a nutrient variation between the 2 species of fish Oreochromis niloticus has higher crude protein, lipids, moisture and ash content than Clarias gariepinus.The amino acids profile shows that both fishes have 17 amino acids. Apart from Tryptophan, the following essential amino acids Histidine, Methionine, Threonine, Isoleucine, Leucine, Lysine, Valine and Phenylalanine are present in both fish. Oreochromis niloticus however has higher quantities of the essential amino acids except for Histidine than Clarias gariepinus
    Description: Includes:- 2 tables.;2 figs.;7 refs.
    Keywords: Chemistry ; Fisheries ; Clarias gariepinus ; Oreochromis niloticus ; Nigeria ; Kainji L. ; freshwater environment ; Amino acids ; Ash content ; Lipids ; Organic compounds ; Moisture ; Proteins
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 91 - 95
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  • 2
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    Evaluations off heavy metals in fish from Lake Geriyo Yola, Nigeria using x-ray fluorescence technique (2021)
    FISON | Akure (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23338 | 19325 | 2018-04-07 17:17:18 | 23338 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The evaluation of Cr. Cu, Mn, Fe, Ni, Zn,As and Pb concentrations in Clarias gariepinus and Oreochromis niloticus from Lake Geriyo Yola,Adamawa, Nigeria using X - ray fluorescence (XRF) technique is discussed. The analytical samples are irradiated with high energy electrons of 109Cd to produce fluorescent X-rays was produced which passes to the Silicon-lithium detector through Mo target as a source of monochromatic X-rays. The spectrum of energy generated on the detector was processed by a Multi- Channel Analyzer to obtain analytical data. The intensity of the fluorescent X-rays on the detector is proportional to the concentration of the individual element of interest in the sample. This method can identify up to 30 or more elements at the same time. The results showed varying levels of heavy metals in the fishes. The concentrations of Cr, Mn, Cu, and Ni in the fishes were much higher than WHO and PEPA maximum permissible limits, while the concentrations of Zn and Pb were lower than the standards. The results suggest that the lake is polluted with Cr, Mn, Cu and Ni and the consumption of fishes of the lake is life threatening to man.
    Description: Includes:- 1table.;11 refs.
    Keywords: Ecology ; Chemistry ; Pollution ; Clarias gariepinus ; Oreochromis niloticus ; Nigeria ; Geriyo L. ; freshwater environment ; Heavy metals ; Fish ; X-ray fluorescence analysis ; Pollution ; Pollution effects
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 69-71
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  • 3
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    Effects of salinity on larval dimension of Tilapia guineensis (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23422 | 19325 | 2018-04-25 19:24:46 | 23422 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Tilapia guineensis eggs were spawned and hatched in different salinities (17, 12, 7, 5, 2 and 0) ppt. The study was conducted in eight replicates. The aim of the investigation was to ascertain disparity in hatching size of Tilapia guineensis attributable to salinity. Immediately hatching was observed, body weight of five hatchlings in each replicate was individually weighed in milligramme. The individual total length of the five hatchlings was also measured in millimeter. The height of the yolk sac larva was determined with micro-metre screw gauge graduated in millimeter from the top of the yolk sac to the dorsal region of the larva. Data obtained were used to calculate yolk sac volume. Significant differences (P〈0.01) were observed in body weight and total length of larvae hatched in different salinities. The heaviest and longest larvae were hatched in 12 ppt saline water. The yolk sac volume of larvae hatched in lower salinities were significantly higher (P〈0.01) than the yolk sac volume of larvae hatched in higher salinities. The smallest yolk sac volume was recorded in 12ppt saline water. Our findings show that salinity could be manipulated for economic production of heavier seeds of Tilapia.
    Description: Includes:- 5 tables.;6 refs.
    Keywords: Aquaculture ; Chemistry ; Tilapia guineensis ; Nigeria ; brackishwater environment ; Salinity effects ; Larvae
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 51-55
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  • 4
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    Fish species composition/diversity of the Warri River, Niger Delta Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24240 | 19325 | 2018-05-20 05:30:49 | 24240 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Changes in water quality caused by industrialization and technological advancement, affect fishery resources. The Warri River like many other water bodies in Niger Delta, Nigeria are experiencing side effects in terms of pollutant build up cum destruction of fishery resources. This study investigated the fish species composition/diversity of the river in comparison to the baseline studies of previous researchers. Nine sampling locations were chosen including, Jeddo, NNPC Jetty, Nigeria ports Authority jetty, Main Warri market, Delta Steel Jetty, Shell Ramp, Udu Bridge/market Ugbolokposo and Agbarho.Fish species were collected from the respective nine Locations monthly for 24 months. Fish were obtained from landings of local fishermen every fortnight with prior arrangement. Highest diversity index of 3.48 occurred at shell Ramp/Globestar, while the least value of 2.63 was recorded at NNPC Jetty. The condition factor of most fish species in the study were above 1.0, though more species were better conditioned in location 1 (Jeddo). The catfish families probably due to their hardy nature were best conditioned of all families represented. Thirty four fish species recorded in this study compared to 91 species obtained in previous works of 1989 -1994 reflects a sharp drop in species diversity.
    Description: Includes: 18 references.
    Keywords: Fisheries ; Pollution ; Nigeria ; Warri River ; Fisheries resources ; Warri River ; Specie diversity ; Pollutants ; Niger Delta ; freshwater environment ; Fish ; Check lists ; Species diversity ; Water quality ; Industrialization ; Fishery resources ; Pollutants ; Condition factor ; Baseline studies ; Aquaculture development ; Technology transfer
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 349-352
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  • 5
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    Status of fish farming in Rivers State, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24593 | 19325 | 2018-05-20 16:09:32 | 24593 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The study surveyed the status of fish farming in Rivers State of Nigeria. Structured interview schedule questionnaires were used in sourcing information from 90 fish farmers randomly selected from nine local government area, with three local government each drawn from each agricultural zone of the state. Data obtained were analyzed using descriptive statistics. The findings revealed that majority (34.4%) of the fish farmers were male and between the age range of 41-50 years. 31.1% of fish farmers cultured their fish in concrete fish tanks. The total mean annual production of fishes were 41,000 metric tons, 38.9% of fish farmers practiced integrated fish farming, 72.2% of the farmers practice only fish production; 58.9% of farmers sourced their information from friends/fellow farmers. In terms of water supply, 40.0% of farmers sourced their water supply from borehole, 36.6% use tilapia species as their fingerlings, 38.9% of farmers sourced their fingerlings from government hatchery 15.2% of farmers indicated that they suffer loss of tilapia, 54.4% farmers use partial harvest, 92.6% of farmers indicated irregular electricity supply as a major constraints to fish production. In order to facilitate the efficient operation of fish farming in the study area, technical advice on pond construction and preparation, species selection and supply for stocking purposes and collection of relevant data on aquaculture will help in the improvement of fish farming in the study area.
    Description: Includes: 17 references.
    Keywords: Aquaculture ; Nigeria ; Rivers state ; Aquaculture ; Fish ; Rivers State ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 109-113
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  • 6
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    Physico-chemical parameters of fish ponds as it affects fish production in Ado-Ekiti, Ekiti State, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24590 | 19325 | 2018-05-20 16:05:58 | 24590 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The water analysis of five selected ponds in Ado-Ekiti in Ekiti State, was carried out to determine their suitability for fish culture. Pa rameters analyzed were: Temperature, Turbidity, Carbon (IV) oxide, Alkalinity, Hardness, pH and Dissolved oxygen. Values for temperature ranged between 20.0~'C and 29.0~'C, Turbidity values were between 46.0-50.2cm, Carbon (IV) oxide: 11.5-12.2mg/litre; alkalinity: 100-120mg/liter; hardness: 110-200mg/litre; pH: 6.8-7.8 and dissolved oxygen: 5.8-6.8mg/liter. The values obtained were found to be within acceptable range for fish production.
    Description: Includes: 10 references.
    Keywords: Aquaculture ; Chemistry ; Nigeria ; Physico-chemical parameter ; Fish pond ; Ado-Ekiti ; Fish production ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 97-100
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  • 7
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    Modification of NIFFR multipurpose smoking kiln with insulation (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24669 | 19325 | 2018-05-23 07:44:23 | 24669 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: A study was conducted on the old NIFFR smoking kiln in order to improve on it. The parameters used to determine the smoking efficiency include the loss in weight of the fish samples, temperature and the time taken to properly smoke the fish using fire wood as smoking fuel. The smoking kiln was tested by smoking three different species of fish: Clarias gariepinus, Oreochromies niloticus, Synodontis membranecious over a period of two hours. The modified smoking kiln was discovered to perform faster. Its advantage over the already existing one is that it is faster in smoking fish to a regular golden brown colour. The temperature of the heat supplied was quite higher about 100~'C to 120~'C than the commonly used drum oven. The smoking kiln has the average oroduction cost of No.90,000.
    Description: Includes: 9 references.
    Keywords: Fisheries ; Nigeria ; Fish ; Wire mesh tray ; Mild steel ; Chimnet ; Damper plate ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 415-418
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  • 8
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    Effect of Terminalia suparba on fecundity and latency period of Clarias gariepinus broodstocks (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24067 | 19325 | 2018-05-10 10:15:21 | 24067 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This study focused on the assessment of Terminalia suparba (bark, leave and root) based diet to improve the ovulation of Clarias gariepinus brood stocks. Ten female and ten male brood stocks were obtained from a reputable fishfarm in Ogun State, Nigeria and were fed with the diets for four weeks before the breeding exercise. The latency period observed in treatments 1 to 4 was 4hours 30minutes while the ovulation period in treatment 5 was 8 hours. There was no significant different (P〉0.05) among the means. The brood stocks in Treatment 2 (Root) has the highest fecundity count (2001) while those in Treatment 5 (control) has the least fecundity count (1496). The phytochemical analysis of the plant materials showed the presence of Alkaloids, Tannin, Phenol, Glycoside, Flavonoids, Steroids, Phlobatannin, Saponin, Anthraquinones. The physical and chemical parameters of water observed showed that dissolved oxygen value ranges from 3.28 -4.60, pH 6.5 - 8.5, temperature 28.0 - 28.8 and conductivity 8.9 - 9.20. It is therefore concluded that the inclusion of Terminalia suparba in the feed of Clarias gariepinus broodstock will not only improve ovulation but also reduce the latency period.
    Description: Includes: 5 tables;Also includes: 11 refs.
    Keywords: Aquaculture ; Chemistry ; Ecology ; Clarias gariepinus ; Nigeria ; broodstocks ; Terminalia specie ; Latency ; fecundity ; Clarias gariepinus ; freshwater environment ; Artificial feeding ; Feeding experiments ; Fecundity ; Brood stocks ; Sublimation heat ; Ovulation ; Physicochemical properties ; Fish culture
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 5-10
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  • 9
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    Microbial load on the African catfish (Clarias gariepinus) sold in Markurdi metropolis: a case study of selected markets (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24069 | 19325 | 2018-05-10 10:21:32 | 24069 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The work was carried out using 48 samples of smoke-dried African catfish (Clarias gariepinus). Twelve samples each were obtained from high level market, Wadata market, Wurukum Market and North bank market respectively. Different media (SDA, MSA, EMBA, N.A, MCA), gram reaction and biochemical tests were carried out to confirm the presence of the pathogenic bacteria. There was a strong correlation between the bacterial count and water activity of the fish for all bacterial isolates. The micro-organisms isolated were Aspergilus niger, Mucor spp, Salmonella spp, Escherichia coli and Staphylococcus aureus which were indications of contamination from surrounding environment.
    Description: Includes: 5 tables and 4 figs.;Also includes: 16 refs.
    Keywords: Fisheries ; Health ; Clarias gariepinus ; Nigeria ; African catfish ; Bacterial load ; Makurdi ; Mycoflora ; Smoke-dried fish ; freshwater environment ; Microorganisms ; Cured products ; Fish ; Pathogens ; Biochemical analysis ; Processing fishery products ; Storage life
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 16-24
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  • 10
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    Fish: the healthy friendly species (2021)
    FISON | Minna (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24070 | 19325 | 2018-05-12 13:51:23 | 24070 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Fish is a very important part of a healthy diet. Fish and other seafood are the major sources of healthful long-chain omega-3 fats and they are also rich in other nutrients such as vitamin D and selenium, protein, and low in saturated fat. There is strong evidence that eating fish or taking fish oil is good for the heart and blood vessels. Research over the past few decades has confirmed the importance of the nutritional components of fish in brain development and reproduction and highlighted a role for fish in a variety of other functions in the body. Much of the importance of fish in health has come from research into long chain polyunsaturated fatty acids (PUFA) of the n-3 family. The n-3 Fats are also generally known as omega 3 fats. Fish is a rich source of two important n-3 PUFAs, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DBA). Marine algae are the only form of life that can easily make long chain n-3 PUFA. As fish feed on algae, they become rich sources of these important n-3 fats which in turn transfer to humans through consumption of the former. In addition, fish is also a good source of iodine, zinc vitamins A and some B vitamins. Fish intake has bee on decline for many years based on different food consumption survey with alarming findings that some people never eating fish without any taboo attached. The level of fish intake has been linked with a lower risk of death from heart disease and likewise playing vital roles in preventing other illnesses such as arthritis, strokes, breast cancer, diabetes to mention a few. However, it is recommended by various finding that eating fish at least twice a week and including oil- rich fish at least once a week in diet will maintain healthy conditions against illnesses.
    Description: Includes: 3 tables;Also includes: 50 refs.
    Keywords: Fisheries ; Nigria ; Fish ; Healthy ; Friendly ; Species ; freshwater environment ; Fish ; Fish oils ; Heart ; Nutrition ; Nutritive value ; Vitamins ; Fatty acids ; Heavy metals ; Pollutants
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 25-34
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