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Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Oil from transgenic Camelina sativa containing over 25 % n-3 long-chain polyunsaturated fatty acids as the major lipid source in feed for Atlantic salmon (Salmo salar)
Author(s): Betancor, Monica
Li, Keshuai
Bucerzan, Valentin
Sprague, Matthew
Sayanova, Olga
Usher, Sarah
Han, Lihua
Norambuena, Fernando
Torrisen, Ole
Napier, Johnathan A
Tocher, Douglas R
Olsen, Rolf Erik
Keywords: EPA
Fish oil
Issue Date: 28-Jun-2018
Date Deposited: 13-Apr-2018
Citation: Betancor M, Li K, Bucerzan V, Sprague M, Sayanova O, Usher S, Han L, Norambuena F, Torrisen O, Napier JA, Tocher DR & Olsen RE (2018) Oil from transgenic Camelina sativa containing over 25 % n-3 long-chain polyunsaturated fatty acids as the major lipid source in feed for Atlantic salmon (Salmo salar). British Journal of Nutrition, 119 (12), pp. 1378-1392.
Abstract: Facing a bottleneck in the growth of aquaculture, and a gap in the supply and demand of the highly beneficial omega-3 (n-3) long-chain polyunsaturated fatty acids (LC-PUFA), sustainable alternatives to traditional marine–based feeds are required. Therefore, in the present trial, a novel oil obtained from a genetically engineered oilseed crop, Camelina sativa, that supplied over 25 % n-3 LC-PUFA was tested as a sole dietary added lipid source in Atlantic salmon (Salmo salar) feed. Three groups of fish were fed for 12 weeks three experimental diets with the same basal composition and containing 20 % added oil supplied by either a blend of fish oil and rapeseed oil (1:3) (COM) reflecting current commercial formulations, wild-type Camelina oil (WCO) or the novel transgenic Camelina oil (TCO). There were no negative effects on the growth, survival rate or health of the fish. The whole fish and flesh n-3 LC-PUFA levels were highest in fish fed TCO with levels almost and more than 2-fold higher compared to those of fish fed the COM and WCO diets, respectively. Diet TCO had no negative impacts on the evaluated immune and physiological parameters of head kidney monocytes. The transcriptomic responses of liver and mid-intestine showed only mild effects on metabolism genes. Overall, the results clearly indicated that the oil from transgenic Camelina was highly efficient in supplying n-3 LC-PUFA providing levels double that obtained with a current commercial standard, and similar to those a decade ago prior to substantial dietary fishmeal and oil replacement.
DOI Link: 10.1017/S0007114518001125
Rights: This article has been accepted for publication in British Journal of Nutrition. This version is free to view and download for private research and study only. Not for re-distribution, re-sale or use in derivative works. © The Authors 2018

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