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n-3 Canola oil effectively replaces fish oil as a new safe dietary source of DHA in feed for juvenile Atlantic salmon.
Br J Nutr. 2019 12 28; 122(12):1329-1345.BJ

Abstract

Limited availability of fish oils (FO), rich in n-3 long-chain (≥C20) PUFA, is a major constraint for further growth of the aquaculture industry. Long-chain n-3 rich oils from crops GM with algal genes are promising new sources for the industry. This project studied the use of a newly developed n-3 canola oil (DHA-CA) in diets of Atlantic salmon fingerlings in freshwater. The DHA-CA oil has high proportions of the n-3 fatty acids (FA) 18 : 3n-3 and DHA and lower proportions of n-6 FA than conventional plant oils. Levels of phytosterols, vitamin E and minerals in the DHA-CA were within the natural variation of commercial canola oils. Pesticides, mycotoxins, polyaromatic hydrocarbons and heavy metals were below lowest qualifiable concentration. Two feeding trials were conducted to evaluate effects of two dietary levels of DHA-CA compared with two dietary levels of FO at two water temperatures. Fish increased their weight approximately 20-fold at 16°C and 12-fold at 12°C during the experimental periods, with equal growth in salmon fed the FO diets compared with DHA-CA diets. Salmon fed DHA-CA diets had approximately the same EPA+DHA content in whole body as salmon fed FO diets. Gene expression, lipid composition and oxidative stress-related enzyme activities showed only minor differences between the dietary groups, and the effects were mostly a result of dietary oil level, rather than the oil source. The results demonstrated that DHA-CA is a safe and effective replacement for FO in diets of Atlantic salmon during the sensitive fingerling life-stage.

Authors+Show Affiliations

Nofima (Norwegian Institute of Food, Fisheries and Aquaculture Research), 1432 Ås, Norway.Institute of Marine Research, 5817 Bergen, Norway.Nofima (Norwegian Institute of Food, Fisheries and Aquaculture Research), 1432 Ås, Norway.CSIRO Agriculture and Food, QLD Biosciences Precinct, St Lucia, QLD 4067, Australia.Nofima (Norwegian Institute of Food, Fisheries and Aquaculture Research), 1432 Ås, Norway.Nofima (Norwegian Institute of Food, Fisheries and Aquaculture Research), 1432 Ås, Norway.Institute of Marine Research, 5817 Bergen, Norway.CSIRO Oceans and Atmosphere, Hobart, TAS 7000, Australia.Nofima (Norwegian Institute of Food, Fisheries and Aquaculture Research), 1432 Ås, Norway.Nofima (Norwegian Institute of Food, Fisheries and Aquaculture Research), 1432 Ås, Norway.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

31506120

Citation

Ruyter, Bente, et al. "N-3 Canola Oil Effectively Replaces Fish Oil as a New Safe Dietary Source of DHA in Feed for Juvenile Atlantic Salmon." The British Journal of Nutrition, vol. 122, no. 12, 2019, pp. 1329-1345.
Ruyter B, Sissener NH, Østbye TK, et al. N-3 Canola oil effectively replaces fish oil as a new safe dietary source of DHA in feed for juvenile Atlantic salmon. Br J Nutr. 2019;122(12):1329-1345.
Ruyter, B., Sissener, N. H., Østbye, T. K., Simon, C. J., Krasnov, A., Bou, M., Sanden, M., Nichols, P. D., Lutfi, E., & Berge, G. M. (2019). N-3 Canola oil effectively replaces fish oil as a new safe dietary source of DHA in feed for juvenile Atlantic salmon. The British Journal of Nutrition, 122(12), 1329-1345. https://doi.org/10.1017/S0007114519002356
Ruyter B, et al. N-3 Canola Oil Effectively Replaces Fish Oil as a New Safe Dietary Source of DHA in Feed for Juvenile Atlantic Salmon. Br J Nutr. 2019 12 28;122(12):1329-1345. PubMed PMID: 31506120.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - n-3 Canola oil effectively replaces fish oil as a new safe dietary source of DHA in feed for juvenile Atlantic salmon. AU - Ruyter,Bente, AU - Sissener,Nini H, AU - Østbye,Tone-Kari, AU - Simon,Cedric J, AU - Krasnov,Aleksei, AU - Bou,Marta, AU - Sanden,Monica, AU - Nichols,Peter D, AU - Lutfi,Esmail, AU - Berge,Gerd M, PY - 2019/9/12/pubmed PY - 2020/6/17/medline PY - 2019/9/12/entrez KW - Atlantic salmon KW - Canola oil KW - DHA KW - EPA KW - GM crops KW - n-3 Fatty acids SP - 1329 EP - 1345 JF - The British journal of nutrition JO - Br. J. Nutr. VL - 122 IS - 12 N2 - Limited availability of fish oils (FO), rich in n-3 long-chain (≥C20) PUFA, is a major constraint for further growth of the aquaculture industry. Long-chain n-3 rich oils from crops GM with algal genes are promising new sources for the industry. This project studied the use of a newly developed n-3 canola oil (DHA-CA) in diets of Atlantic salmon fingerlings in freshwater. The DHA-CA oil has high proportions of the n-3 fatty acids (FA) 18 : 3n-3 and DHA and lower proportions of n-6 FA than conventional plant oils. Levels of phytosterols, vitamin E and minerals in the DHA-CA were within the natural variation of commercial canola oils. Pesticides, mycotoxins, polyaromatic hydrocarbons and heavy metals were below lowest qualifiable concentration. Two feeding trials were conducted to evaluate effects of two dietary levels of DHA-CA compared with two dietary levels of FO at two water temperatures. Fish increased their weight approximately 20-fold at 16°C and 12-fold at 12°C during the experimental periods, with equal growth in salmon fed the FO diets compared with DHA-CA diets. Salmon fed DHA-CA diets had approximately the same EPA+DHA content in whole body as salmon fed FO diets. Gene expression, lipid composition and oxidative stress-related enzyme activities showed only minor differences between the dietary groups, and the effects were mostly a result of dietary oil level, rather than the oil source. The results demonstrated that DHA-CA is a safe and effective replacement for FO in diets of Atlantic salmon during the sensitive fingerling life-stage. SN - 1475-2662 UR - https://www.unboundmedicine.com/medline/citation/31506120/n_3_Canola_oil_effectively_replaces_fish_oil_as_a_new_safe_dietary_source_of_DHA_in_feed_for_juvenile_Atlantic_salmon_ L2 - https://www.cambridge.org/core/product/identifier/S0007114519002356/type/journal_article DB - PRIME DP - Unbound Medicine ER -