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  • Physiology  (4)
  • 2020-2022  (1)
  • 2015-2019  (3)
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  • 2020-2022  (1)
  • 2015-2019  (3)
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  • 1
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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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  • 2
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    Effects of varying dietary protein level on the growth, feed efficiency and body composition of lemon fin barb hybrid fingerlings (2018)
    Details
    Publication Date: 2021-05-19
    Description: This study was conducted to determine the optimal dietary protein requirement for lemon fin barb hybrid fingerlings. Triplicate groups of fish (1.00 ± 0.05 g) were fed twice a day until apparent satiation with five isocaloric (16 kJ/g) diets containing varying protein level ranging from 20 to 40% for 60 days. Survival was not affected by the dietary protein level. The weight gain and specific growth rate were improved with dietary protein level up to 35 %. The best feed conversion ratio (1.61) was achieved at 35% dietary protein level. Protein efficiency ratio was not influenced by the dietary protein level. Using a broken line regression model, the dietary protein requirement of lemon fin barb hybrid was estimated at 34.6 % based on weight gain response but the value was not significantly better than the 30% protein diet. Proximate composition of the fish showed that dietary protein level only affected the protein content of the lemon fin barb hybrid. The study showed the protein retention was increased until 30% and decreased above this level. Lipid retention decreased as the dietary protein increased. It can be concluded that lemon fin barb hybrid required 30-35% protein at gross energy 16 kJ/g for the best growth and feed efficiency.
    Description: Published
    Keywords: Biology ; Physiology ; Lemon fin barb hybrid ; Lemon fin barb hybrid ; Protein requirement ; Diet ; Growth ; Nutrition ; Body composition ; Feed ; Fingerlings
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.425-435
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  • 3
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    Effects of varying dietary protein level on the growth, feed efficiency and body composition of lemon fin barb hybrid fingerlings (2021)
    In:  http://aquaticcommons.org/id/eprint/22786 | 18721 | 2018-05-22 18:11:10 | 22786 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-10
    Description: This study was conducted to determine the optimal dietary protein requirement for lemon fin barb hybrid fingerlings. Triplicate groups of fish (1.00 ± 0.05 g) were fed twice a day until apparent satiation with five isocaloric (16 kJ/g) diets containing varying protein level ranging from 20 to 40% for 60 days. Survival was not affected by the dietary protein level. The weight gain and specific growth rate were improved with dietary protein level up to 35 %. The best feed conversion ratio (1.61) was achieved at 35% dietary protein level. Protein efficiency ratio was not influenced by the dietary protein level. Using a broken line regression model, the dietary protein requirement of lemon fin barb hybrid was estimated at 34.6 % based on weight gain response but the value was not significantly better than the 30% protein diet. Proximate composition of the fish showed that dietary protein level only affected the protein content of the lemon fin barb hybrid. The study showed the protein retention was increased until 30% and decreased above this level. Lipid retention decreased as the dietary protein increased. It can be concluded that lemon fin barb hybrid required 30-35% protein at gross energy 16 kJ/g for the best growth and feed efficiency.
    Keywords: Aquaculture ; Biology ; Fisheries ; Lemon fin barb hybrid ; protein requirement ; diet ; growth ; nutrition ; body composition ; Biology ; Physiology ; Malaysia
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 425-435
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  • 4
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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 (2018)
    Details
    Publication Date: 2021-05-19
    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 tothe diet with 0.0 LnA/LA ratio but different in total amounts of C18polyunsaturated 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.
    Description: Published
    Keywords: Biology ; Physiology ; Omega-3 ; Nutrition ; Fatty acid ; Malaysian mahseer ; Tor tambroides ; Tissues ; Growth ; Performance ; Juvenile ; Histological
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.185-200
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