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Influence of dietary lipid levels on growth, nutrient utilization, tissue fatty acid composition and desaturase gene expression in silver barb (Puntius gonionotous) fingerlings.

Abstract

Silver barb (Puntius gonionotus) is considered as a promising medium-sized carp species for freshwater aquaculture in Asia. This study in silver barb was carried out to evaluate the effects of increasing dietary levels of lipid on growth, nutrient utilization, whole-body composition, tissue fatty acid composition and Δ6 fatty acyl desaturase (Δ6 fad) gene expression. Fish (11.3 ± 0.23 g of initial body weight) was fed for 60 days with five experimental diets: FO-0 (control feed); FO-30; FO-60; FO-90 and FO-120 containing 0, 30, 60, 90 and 120 g fish oil kg-1 diet, respectively. Among the diets, the highest specific growth rate (SGR), protein efficiency ratio (PER) and whole-body lipid content, and the lowest feed conversion ratio (FCR) were recorded with FO-120 diet. The saturated fatty acids (SFA) level in the muscle was significantly (P < .05) increased with the enhanced FO supplementation, whereas monounsaturated fatty acids (MUFA) level decreased. Increased level of fish oil in the diet also enhanced the n-3 PUFA and n-3 LC-PUFA (long-chain polyunsaturated fatty acid) in the muscle and liver. The expression of Δ6 fad gene was downregulated, whereas the serum biochemical constituents were either remain unchanged or enhanced with increased FO supplementation in the diets of silver barb.

Authors+Show Affiliations

Division of Fish Nutrition and Physiology, ICAR- Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, Odisha, India.Division of Fish Nutrition and Physiology, ICAR- Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, Odisha, India. Electronic address: Ashis.Saha@icar.gov.in.Division of Fish Nutrition and Physiology, ICAR- Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, Odisha, India.Division of Fish Health Management, ICAR- Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, Odisha, India.Division of Fish Nutrition and Physiology, ICAR- Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, Odisha, India.Division of Fish Nutrition and Physiology, ICAR- Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, Odisha, India.

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

30118764

Citation

Nayak, Madhusmita, et al. "Influence of Dietary Lipid Levels On Growth, Nutrient Utilization, Tissue Fatty Acid Composition and Desaturase Gene Expression in Silver Barb (Puntius Gonionotous) Fingerlings." Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology, vol. 226, 2018, pp. 18-25.
Nayak M, Saha A, Pradhan A, et al. Influence of dietary lipid levels on growth, nutrient utilization, tissue fatty acid composition and desaturase gene expression in silver barb (Puntius gonionotous) fingerlings. Comp Biochem Physiol B, Biochem Mol Biol. 2018;226:18-25.
Nayak, M., Saha, A., Pradhan, A., Samanta, M., Mohanty, T. K., & Giri, S. S. (2018). Influence of dietary lipid levels on growth, nutrient utilization, tissue fatty acid composition and desaturase gene expression in silver barb (Puntius gonionotous) fingerlings. Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology, 226, 18-25. https://doi.org/10.1016/j.cbpb.2018.08.005
Nayak M, et al. Influence of Dietary Lipid Levels On Growth, Nutrient Utilization, Tissue Fatty Acid Composition and Desaturase Gene Expression in Silver Barb (Puntius Gonionotous) Fingerlings. Comp Biochem Physiol B, Biochem Mol Biol. 2018;226:18-25. PubMed PMID: 30118764.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of dietary lipid levels on growth, nutrient utilization, tissue fatty acid composition and desaturase gene expression in silver barb (Puntius gonionotous) fingerlings. AU - Nayak,Madhusmita, AU - Saha,Ashis, AU - Pradhan,Avinash, AU - Samanta,Mrinal, AU - Mohanty,Tapan K, AU - Giri,Shiba Shankar, Y1 - 2018/08/15/ PY - 2018/03/31/received PY - 2018/08/08/revised PY - 2018/08/08/accepted PY - 2018/8/18/pubmed PY - 2018/10/3/medline PY - 2018/8/18/entrez KW - Fatty acid KW - Fish oil KW - Growth KW - Lipid level KW - Silver barb KW - Δ6 fad SP - 18 EP - 25 JF - Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology JO - Comp. Biochem. Physiol. B, Biochem. Mol. Biol. VL - 226 N2 - Silver barb (Puntius gonionotus) is considered as a promising medium-sized carp species for freshwater aquaculture in Asia. This study in silver barb was carried out to evaluate the effects of increasing dietary levels of lipid on growth, nutrient utilization, whole-body composition, tissue fatty acid composition and Δ6 fatty acyl desaturase (Δ6 fad) gene expression. Fish (11.3 ± 0.23 g of initial body weight) was fed for 60 days with five experimental diets: FO-0 (control feed); FO-30; FO-60; FO-90 and FO-120 containing 0, 30, 60, 90 and 120 g fish oil kg-1 diet, respectively. Among the diets, the highest specific growth rate (SGR), protein efficiency ratio (PER) and whole-body lipid content, and the lowest feed conversion ratio (FCR) were recorded with FO-120 diet. The saturated fatty acids (SFA) level in the muscle was significantly (P < .05) increased with the enhanced FO supplementation, whereas monounsaturated fatty acids (MUFA) level decreased. Increased level of fish oil in the diet also enhanced the n-3 PUFA and n-3 LC-PUFA (long-chain polyunsaturated fatty acid) in the muscle and liver. The expression of Δ6 fad gene was downregulated, whereas the serum biochemical constituents were either remain unchanged or enhanced with increased FO supplementation in the diets of silver barb. SN - 1879-1107 UR - https://www.unboundmedicine.com/medline/citation/30118764/Influence_of_dietary_lipid_levels_on_growth_nutrient_utilization_tissue_fatty_acid_composition_and_desaturase_gene_expression_in_silver_barb__Puntius_gonionotous__fingerlings_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1096-4959(18)30100-3 DB - PRIME DP - Unbound Medicine ER -