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  • Iran  (15)
  • Biology  (14)
  • Hatchery  (4)
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  • 1
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    Study on brood stock management of Litopenaeus vannamei using imported post larvae (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: In order to domesticate Litopenaeus vannamei as a solution to single species shrimp aquaculture of Penaeus indicus and to reduce risk of shrimp culture in emergency cases, this study was carried out. Initially the postlarvae reared from imported L. vannamei were cultured. After culture season the adult shrimps were transported to greenhouse ponds for wintering. It is then relocated to hatchery saloon. After eye stalk ablation and maturation the female brood stocks were introduced to matured male for copulation at ponds. During the study period, male and female shrimps attained full maturation at end – April by temperature over 25ºC, the copulation process was started significantly. Finally of the 12 instances of copulation, one instance resulted nauplii production. The best maturation was observed at 28 ֯C ±1 and salinity30 to 33PPT and pH of 8 to 8.3 Fresh sea worms and squid showed the highest effect on fecundity in brood stocks. Besides, the spring season was obtained to be the best period for brood stock production in Bushehr province.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Litopenaeus vannamei ; Brood stocks ; Larvae ; Species ; Shrimp ; Aquaculture ; Postlarvae ; L.vannamei ; Hatchery ; Maturation ; Nauplii ; pH ; Sea worm ; Squid
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 25pp.
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  • 2
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    Broodstock Management, Reproduction, Cryopreservation in salmoind, Genetic Management and Selective Breeding in Responsible Aquaculture (2018)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    Details
    Publication Date: 2021-05-19
    Description: This study was conducted to codify the guideline and indexes of broodstock management in salmonid fish and cryopreservation, selective breeding and sex reversal in hatchery to attain responsible aquaculture development. Cryopreservation includes of sperm and egg in term of economic is important in aquaculture. In this report mentioned the type and name of material. All female and sex reversal fish are produced by steroid hormone which mentioned in this report. Selective breeding include individual selection and family selection which could be used for genetic improvement of fish.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Economic ; Broodstock ; Reproduction ; Cryopreservation ; Genetic ; Breeding ; Aquaculture ; Salmonid fish ; Sex reversal ; Hatchery ; Sperm ; Egg ; Female ; Steroid hormones
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 46pp.
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  • 3
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    Probiotic administration of Litopenaeus vannamei: Is there any negative effect on the fatty acid profile of meat? (2018)
    Details
    Publication Date: 2021-05-19
    Description: It has been found that appropriate probiotic applications increased growth performance and disease resistance in shrimp. Bacillus subtilis has been suggested as a potent probiotic in improving growth performance and enhancing immune response in white shrimp, Litopenaeus vannamei. The aim of this work was to evaluate the possible effect of B. subtilis administration on the meat fatty acid profile of white shrimp, L. vannamei. Two groups of shrimps received B. subtilis strains L10 and G1 from the B. subtilis-supplemented feed (105 and 108 CFU g-1) while two other groups received it from the rearing water (105 and 108 CFU ml-1). One group received no B. subtilis and served as control. According to the results, there was no significant difference between the muscle fatty acid profiles of shrimps administrated by probiotic and control group. This study showed that B. subtilis administration, in either diets or water, did not have any negative effect on fatty acid profiles of L. vannamei meat.
    Description: Published
    Keywords: Biology ; Physiology ; Probiotic ; Fatty acid ; Litopenaeus vannamei ; Nutrition
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.550-559
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  • 4
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    Apparent digestibility coefficients and nutritional value of Iranian cottonseed meal varieties for rainbow trout (Oncorhynchus mykiss) (2018)
    Details
    Publication Date: 2021-05-19
    Description: Three different varieties of cottonseed meal (CSM) were evaluated to measure the apparent digestibility coefficient (ADC) of the nutrients using chromic oxide (Cr2O3) as an indigestible marker. Five experimental diets were prepared and mixed with 1% of Cr2O3, 2% of mineral and vitamin each of which were premixed. Diet 1 was used as the control diet. Diets 2, 3, 4 and 5 were formulated using 70% of the control diet together with 30% of each ofthe cottonseed meal Pak (CSMP), cottonseed meal Sahel (CSMS), cottonseed meal Akra (CSMA), and soya bean meal (SBM), respectively, in three replications.The ADC of the three CSM varieties was measured to be 53.8-62.7%, 60.2-66.6% and 75.6-82.4% for dry matter, fat and crude protein, respectively. Survival rate for all fishes used in this study was more than 98%. Fishes fed with the CSM diets were not significantly different compared with those fed with the SBM diet in terms of survival rate (p〉0.05). Apparent protein digestibility of CSMP and CSMS showed no significant difference with SBM (p〉0.05). Therefore, it could be concluded that two kinds of CSM could be used as a replacement for SBM in rainbow trout as a protein source.
    Description: Published
    Keywords: Biology ; Physiology ; Oncorhynchus mykiss ; Iranian Cottonseed meal varieties ; Soybean meal ; Apparent digestibility coefficients ; Rainbow trout
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.522-529
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  • 5
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    Proximate and fatty acid composition of liver and fatty tissue of patincatfish (Pangasianodon hypophthalmus) (2018)
    Details
    Publication Date: 2021-05-19
    Description: The visceral storage fat and liver of patin catfish (Pangasianodon hypophthalmus) are normally discarded, which incurs cost and can cause environmental pollution. However, these may be potential sources to extract fish oil. The proximate and fatty acid compositions of liver and fatty tissue of patin catfish were investigated to evaluate the suitability of these by-products for extracting fish oil. Fat was extracted using a low temperature solvent extraction method. The average fat content of fatty tissue and liver of females were 77.64 and 11.71%, respectively, whereas in males this was73.23 and 9.59%, respectively. Fatty acids found in the extracted oil of these byproducts were C12:0, C14:0, C14:1, C16:0, C16:1, C18:0, C18:1, C18:2, C18:3, C18:4, C20:0, C20:1, C20:4, C20:5, and C22:6.The major fatty acids presented in these tissues were palmitic (C16:0), oleic (C18:1n-9), and linoleic acid (C18:2 n-6). The total amount of polyunsaturated fatty acids of liver from male and female patin catfish were 13.31 and 13.30%, respectively, whereas in the fatty tissue these were11.64 and 12.09%, respectively. The n-3 to n-6 ratios of liver and fatty tissue of females were 1.61and 0.95, respectively, whereas in male fish these were 1.31 and 1.05, respectively. Results of this study indicated that the liver and fatty tissues of patin catfish are suitable sources of fish oil specifically due to the presence of monounsaturated and n-3 polyunsaturated fatty acids.
    Description: Published
    Keywords: Biology ; Physiology ; Pangasianodon hypophthalmus ; Catfish ; Fatty acid ; Liver ; Fatty tissue ; Tissues ; Liver
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.541-549
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  • 6
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    Short communication: Identification and morphometric descriptions of four dominant families of larval fishes in the estuary of Marudu Bay, Sabah, East Malaysia (2021)
    In:  http://aquaticcommons.org/id/eprint/22950 | 18721 | 2018-06-06 21:14:57 | 22950 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-11
    Description: Fish larvae are mostly ecologically and morphologically different in comparison with their adult counterparts along their development processes. They occupy different habitats, taking different food resources, and having different predators and different behaviour. During the larval phase, the fish develops from an egg to a larva which has all the fully functional organs. Many species have highly specialized larval morphologies, with various structures (e.g. strong spines on the head) that will be modified and lost upon transition towards adulthood. Fish larvae differ so much from their adults that they are often difficult to identify. Nonetheless, they need to be identified to some level of confidence if larval ecological studies are to be meaningful. Therefore, the positive identification of larvae is necessary. The identity and description of the early life stages of mangrove fish larvae is important to enable more research on fish larvae in the estuarine ecosystem. ... The present study can be a basic method intended to facilitate the identification of fish larvae from the Marudu Bay. Morphological factors are still the main key to identification of fish larvae but to get systematic information on fish larvae one may need to use molecular methods and also morphological variation. Further detailed systematic studies on the fish larvae particularly with the adoption of both molecular methods and morphological variation are needed for more accurate identification and for the purpose of extensive information on fish larval diversity in Sabah waters.
    Keywords: Biology ; Ecology ; Fish larvae ; Taxonomy ; Marudu Bay ; Sabah ; Ecology ; Malaysia
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 1262-1268
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  • 7
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    Broodstock management, reproduction, cryopreservation in salmonid, genetic management and selective breeding in responsible aquaculture (2021)
    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25651 | 18721 | 2018-10-14 02:48:20 | 25651 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-16
    Description: This study was conducted to codify the guideline and indexes of broodstock management in salmonid fish and cryopreservation, selective breeding and sex reversal in hatchery to attain responsible aquaculture development. Cryopreservation includes of sperm and egg in term of economic is important in aquaculture. In this report mentioned the type and name of material. All female and sex reversal fish are produced by steroid hormone which mentioned in this report. Selective breeding include individual selection and family selection which could be used for genetic improvement of fish.
    Keywords: Aquaculture ; Biology ; Management ; Iran ; Broodstock ; Reproduction ; Cryopreservation ; Genetic ; Breeding ; Aquaculture ; Salmonid fish ; Sex reversal ; Hatchery ; Sperm ; Egg ; Female ; Steroid hormones
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 46
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  • 8
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    Effect of using various amounts of patin (Pangasianodon hypophthalmus) fish oil on physical and chemical properties of moisturizing hand cream (2021)
    In:  http://aquaticcommons.org/id/eprint/26457 | 18721 | 2019-05-06 09:22:48 | 26457 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-24
    Description: Hand cream is used for rehydrating and improving skin properties. The skin is the first point of contact with the environment. Thus having healthy skin with proper barrier properties is quite important. The beneficial effects of fish oil on skin make it a favorable ingredient to be used in hand care products. In the present study, the efficacy and stability of various hand cream formulations using 0, 1.0, 2.5 and 5.0% of fish oil were investigated and compared. The appearance, odor, texture, and pH of formulations containing 1 and 2.5% of fish oil remained stable in very good qualities during the storage, whereas the related values to the appearance and texture of formulation containing 5.0% of fish oil at the end of 6 months of storage at 45°C were significantly (p〈0.05) lower than other formulations and previous evaluations of this formulation. Weight loss was not observed in all formulations under study.
    Keywords: Biology ; Chemistry ; Fisheries ; Fish oil ; Hand cream ; Formulation ; Cosmetic ; Stability ; Malaysia
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 215-223
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  • 9
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    Probiotic administration of Litopenaeus vannamei: Is there any negative effect on the fatty acid profile of meat? (2021)
    In:  http://aquaticcommons.org/id/eprint/22708 | 18721 | 2018-05-16 19:03:07 | 22708 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-09
    Description: It has been found that appropriate probiotic applications increased growth performance and disease resistance in shrimp. Bacillus subtilis has been suggested as a potent probiotic in improving growth performance and enhancing immune response in white shrimp, Litopenaeus vannamei. The aim of this work was to evaluate the possible effect of B. subtilis administration on the meat fatty acid profile of white shrimp, L. vannamei. Two groups of shrimps received B. subtilis strains L10 and G1 from the B. subtilis-supplemented feed (10^5 and 10^8 CFU g^-1) while two other groups received it from the rearing water (10^5 and 10^8 CFU ml^-1). One group received no B. subtilis and served as control. According to the results, there was no significant difference between the muscle fatty acid profiles of shrimps administrated by probiotic and control group. This study showed that B. subtilis administration, in either diets or water, did not have any negative effect on fatty acid profiles of L. vannamei meat.
    Keywords: Aquaculture ; Biology ; Fisheries ; Probiotic ; Fatty acid ; Litopenaeus vannamei ; Nutrition ; Biology ; physiology ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 550-559
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  • 10
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    Effect of dietary linolenic acid (18:3n–3)/linoleic acid (18:2n–6) ratio on growth performance, tissue fatty acid profile and histological alterations in the liver of juvenile Tor tambroides (2021)
    In:  http://aquaticcommons.org/id/eprint/22679 | 18721 | 2018-05-15 20:52:08 | 22679 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-09
    Description: This study was conducted to determine optimal ratios of dietary linolenic acid (18:3n-3, LnA) to linoleic acid (18:2n-6, LA) for Tor tambroides. Juveniles were fed three trial diets with different ratios of LnA/LA (0.0, 0.5 and 1.0) for 10 weeks. Another diet contained 100% palm oil, which was similar to the diet with 0.0 LnA/LA ratio but different in total amounts of C18 polyunsaturated fatty acid, was also used as a control. At the end of the experiment, no significant difference in growth performance was observed among treatments. The overall fatty acid composition in muscle of T. tambroides fed experimental diets was similar in terms of saturated fatty acid and monounsaturated fatty acid. The muscle of fish fed diet with LnA/LA ratio of 0.0 contained significantly lower (p〈.05) amount of overall n-3 PUFA than those fed the other diets. Intense accumulation of lipid in the liver parenchyma of all fish except for those fed control diet led to severe degeneration of hepatocytes indicating fatty liver. However, most of the hepatocytes of fish fed control diet were also swollen with nuclei migrated. T. tambroides fed diet with LnA/LA ratio of 0.0 showed degenerated enterocytes with an epithelium with disrupted edges. In conclusion, using vegetable oils contained high level of either LA or LnA in T. tambroides diet seemed to have no advantage over using palm oil contained high level of saturated fatty acid.
    Keywords: Aquaculture ; Biology ; Fisheries ; Omega-3 ; Nutrition ; Fatty acid ; Malaysian mahseer ; Tor tambroides ; Malaysia
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 185-200
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