Tags

Type your tag names separated by a space and hit enter

Atlantic salmon require long-chain n-3 fatty acids for optimal growth throughout the seawater period.
J Nutr Sci. 2016; 5:e19.JN

Abstract

The nutritional requirement for n-3 long-chain PUFA in fast-growing Atlantic salmon (Salmo salar) during grow out in the sea is not well documented. Diets were formulated with levels of EPA (20 : 5n-3) and DHA (22 : 6n-3) ranging from 1·3 to 7·4 % of fatty acids (4-24 g/kg feed). Two long-term trials were conducted through the seawater phase, the first at 6 and 12°C, and the second at 12°C. In the first trial, growth at both temperatures was significantly lower in fish fed 1·4 % EPA+DHA of total fatty acids compared with the 5·2 % EPA+DHA group. In the second trial, growth was significantly lower in fish fed 1·3 and 2·7 % compared with 4·4 and 7·4 % EPA + DHA. Fatty acid composition in the fish reflected diet composition, but only after a 7-fold increase in body weight did the fatty acid profile of the fish stabilise according to dietary fatty acids (shown for EPA and DHA). The retention efficiency of DHA increased with decreasing dietary levels, and was 120-190 and 120-200 % in trials 1 and 2, respectively. The retention efficiency of EPA was lower (60-200 %), and values >100 % were only achieved at the lowest dietary levels in both trials. Temperature did not affect fatty acid retention efficiency. These results suggest that Atlantic salmon have a specific requirement for EPA + DHA >2·7 % of fatty acids for optimal long-term growth in seawater, and that short-term growth trials with less weight increase would not show these effects.

Authors+Show Affiliations

Skretting Aquaculture Research Centre , PO Box 48 , 4001 Stavanger , Norway.National Institute of Nutrition and Seafood Research (NIFES) , PO Box 2029 , Strandgaten 229 , 5817 Bergen , Norway.Skretting Aquaculture Research Centre , PO Box 48 , 4001 Stavanger , Norway.Skretting Aquaculture Research Centre , PO Box 48 , 4001 Stavanger , Norway.National Institute of Nutrition and Seafood Research (NIFES) , PO Box 2029 , Strandgaten 229 , 5817 Bergen , Norway.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27293556

Citation

Rosenlund, Grethe, et al. "Atlantic Salmon Require Long-chain N-3 Fatty Acids for Optimal Growth Throughout the Seawater Period." Journal of Nutritional Science, vol. 5, 2016, pp. e19.
Rosenlund G, Torstensen BE, Stubhaug I, et al. Atlantic salmon require long-chain n-3 fatty acids for optimal growth throughout the seawater period. J Nutr Sci. 2016;5:e19.
Rosenlund, G., Torstensen, B. E., Stubhaug, I., Usman, N., & Sissener, N. H. (2016). Atlantic salmon require long-chain n-3 fatty acids for optimal growth throughout the seawater period. Journal of Nutritional Science, 5, e19. https://doi.org/10.1017/jns.2016.10
Rosenlund G, et al. Atlantic Salmon Require Long-chain N-3 Fatty Acids for Optimal Growth Throughout the Seawater Period. J Nutr Sci. 2016;5:e19. PubMed PMID: 27293556.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Atlantic salmon require long-chain n-3 fatty acids for optimal growth throughout the seawater period. AU - Rosenlund,Grethe, AU - Torstensen,Bente E, AU - Stubhaug,Ingunn, AU - Usman,Nafiha, AU - Sissener,Nini H, Y1 - 2016/05/11/ PY - 2016/02/20/received PY - 2016/03/02/accepted PY - 2016/6/14/entrez PY - 2016/6/14/pubmed PY - 2016/6/14/medline KW - Atlantic salmon KW - BW, body weight KW - EFA, essential fatty acid KW - FA, fatty acid KW - FCR, feed conversion ratio KW - FO, fish oil KW - Fish requirements KW - Growth performance in seawater KW - LC-PUFA, long-chain PUFA KW - LNA, α-linolenic acid KW - PL, phospholipid KW - SGR, specific growth rate KW - TGC, thermal growth coefficient KW - VO, vegetable oil KW - n-3 Fatty acids SP - e19 EP - e19 JF - Journal of nutritional science JO - J Nutr Sci VL - 5 N2 - The nutritional requirement for n-3 long-chain PUFA in fast-growing Atlantic salmon (Salmo salar) during grow out in the sea is not well documented. Diets were formulated with levels of EPA (20 : 5n-3) and DHA (22 : 6n-3) ranging from 1·3 to 7·4 % of fatty acids (4-24 g/kg feed). Two long-term trials were conducted through the seawater phase, the first at 6 and 12°C, and the second at 12°C. In the first trial, growth at both temperatures was significantly lower in fish fed 1·4 % EPA+DHA of total fatty acids compared with the 5·2 % EPA+DHA group. In the second trial, growth was significantly lower in fish fed 1·3 and 2·7 % compared with 4·4 and 7·4 % EPA + DHA. Fatty acid composition in the fish reflected diet composition, but only after a 7-fold increase in body weight did the fatty acid profile of the fish stabilise according to dietary fatty acids (shown for EPA and DHA). The retention efficiency of DHA increased with decreasing dietary levels, and was 120-190 and 120-200 % in trials 1 and 2, respectively. The retention efficiency of EPA was lower (60-200 %), and values >100 % were only achieved at the lowest dietary levels in both trials. Temperature did not affect fatty acid retention efficiency. These results suggest that Atlantic salmon have a specific requirement for EPA + DHA >2·7 % of fatty acids for optimal long-term growth in seawater, and that short-term growth trials with less weight increase would not show these effects. SN - 2048-6790 UR - https://www.unboundmedicine.com/medline/citation/27293556/Atlantic_salmon_require_long_chain_n_3_fatty_acids_for_optimal_growth_throughout_the_seawater_period_ L2 - https://www.cambridge.org/core/product/identifier/00010/type/journal_article DB - PRIME DP - Unbound Medicine ER -
Try the Free App:
Prime PubMed app for iOS iPhone iPad
Prime PubMed app for Android
Prime PubMed is provided
free to individuals by:
Unbound Medicine.