n-3 Canola oil effectively replaces fish oil as a new safe dietary source of DHA in feed for juvenile Atlantic salmon
Abstract Limited availability of fish oils (FO), rich in n -3 long-chain (≥C 20 ) 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 d...
Published in: | British Journal of Nutrition |
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Language: | English |
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2019
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Online Access: | http://dx.doi.org/10.1017/s0007114519002356 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0007114519002356 |
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crcambridgeupr:10.1017/s0007114519002356 2024-09-30T14:32:24+00:00 n-3 Canola oil effectively replaces fish oil as a new safe dietary source of DHA in feed for juvenile Atlantic salmon Ruyter, Bente Sissener, Nini H. Østbye, Tone-Kari Simon, Cedric J. Krasnov, Aleksei Bou, Marta Sanden, Monica Nichols, Peter D. Lutfi, Esmail Berge, Gerd M. 2019 http://dx.doi.org/10.1017/s0007114519002356 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0007114519002356 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ British Journal of Nutrition volume 122, issue 12, page 1329-1345 ISSN 0007-1145 1475-2662 journal-article 2019 crcambridgeupr https://doi.org/10.1017/s0007114519002356 2024-09-11T04:03:32Z Abstract Limited availability of fish oils (FO), rich in n -3 long-chain (≥C 20 ) 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 : 3 n -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. Article in Journal/Newspaper Atlantic salmon Cambridge University Press British Journal of Nutrition 122 12 1329 1345 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Limited availability of fish oils (FO), rich in n -3 long-chain (≥C 20 ) 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 : 3 n -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. |
format |
Article in Journal/Newspaper |
author |
Ruyter, Bente Sissener, Nini H. Østbye, Tone-Kari Simon, Cedric J. Krasnov, Aleksei Bou, Marta Sanden, Monica Nichols, Peter D. Lutfi, Esmail Berge, Gerd M. |
spellingShingle |
Ruyter, Bente Sissener, Nini H. Østbye, Tone-Kari Simon, Cedric J. Krasnov, Aleksei Bou, Marta Sanden, Monica Nichols, Peter D. Lutfi, Esmail Berge, Gerd M. n-3 Canola oil effectively replaces fish oil as a new safe dietary source of DHA in feed for juvenile Atlantic salmon |
author_facet |
Ruyter, Bente Sissener, Nini H. Østbye, Tone-Kari Simon, Cedric J. Krasnov, Aleksei Bou, Marta Sanden, Monica Nichols, Peter D. Lutfi, Esmail Berge, Gerd M. |
author_sort |
Ruyter, Bente |
title |
n-3 Canola oil effectively replaces fish oil as a new safe dietary source of DHA in feed for juvenile Atlantic salmon |
title_short |
n-3 Canola oil effectively replaces fish oil as a new safe dietary source of DHA in feed for juvenile Atlantic salmon |
title_full |
n-3 Canola oil effectively replaces fish oil as a new safe dietary source of DHA in feed for juvenile Atlantic salmon |
title_fullStr |
n-3 Canola oil effectively replaces fish oil as a new safe dietary source of DHA in feed for juvenile Atlantic salmon |
title_full_unstemmed |
n-3 Canola oil effectively replaces fish oil as a new safe dietary source of DHA in feed for juvenile Atlantic salmon |
title_sort |
n-3 canola oil effectively replaces fish oil as a new safe dietary source of dha in feed for juvenile atlantic salmon |
publisher |
Cambridge University Press (CUP) |
publishDate |
2019 |
url |
http://dx.doi.org/10.1017/s0007114519002356 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0007114519002356 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
British Journal of Nutrition volume 122, issue 12, page 1329-1345 ISSN 0007-1145 1475-2662 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/s0007114519002356 |
container_title |
British Journal of Nutrition |
container_volume |
122 |
container_issue |
12 |
container_start_page |
1329 |
op_container_end_page |
1345 |
_version_ |
1811636578173321216 |