Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/25669
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Early nutritional intervention can improve utilisation of vegetable-based diets in diploid and triploid Atlantic salmon (Salmo salar L.) (Forthcoming/Available Online)
Authors: Clarkson, Michael
Migaud, Herve
Metochis, Christoforos
Vera, LM
Leeming, Daniel
Tocher, Douglas R
Taylor, John
Keywords: Atlantic salmon: Nutritional programming: Lipids: EPA: DHA: Vegetable raw material
Issue Date: 24-Jul-2017
Citation: Clarkson M, Migaud H, Metochis C, Vera L, Leeming D, Tocher DR & Taylor J (2017) Early nutritional intervention can improve utilisation of vegetable-based diets in diploid and triploid Atlantic salmon (Salmo salar L.) (Forthcoming/Available Online), British Journal of Nutrition.
Abstract: The present study investigated nutritional programming in Atlantic salmon to improve utilisation of a vegetable-based diet. At first exogenous feeding, fry were fed either a marine-based diet (Diet M stimulus, 80% fishmeal (FM)/4% fish oil (FO)) or a vegetable-based diet (Diet Vstimulus, 10% FM/0% FO) for 3 weeks. Subsequently, all fish were then fed under the same conditions with a commercial, marine-based, diet for 15 weeks and thereafter challenged with a second V diet (Diet Vchallenge, 10% FM/0% FO) for 6 weeks. Diploid and triploid siblings were run in parallel to examine ploidy effects. Growth performance, feed intake, nutrient utilisation and intestinal morphology were monitored. Fish initially given Diet Vstimulus (V-fish) showed 24 % higher growth rate and 23 % better feed efficiency compared with M-fish when later challenged with Diet Vchallenge. There was no difference in feed intake between nutritional histories, but increased nutrient retentions highlighted the improved utilisation of a V diet in V-fish. There were generally few significant effects of nutritional history or ploidy on enteritis scores in the distal intestine after the challenge phase as only V-triploids showed a significant increase (P<0·05) in total score. The data highlighted that the positive effects were most likely a result of nutritional programming and the ability to respond better when challenged later in life may be attributed to physiological and/or metabolic changes induced by the stimulus. This novel study showed the potential of nutritional programming to improve the use of plant raw material ingredients in feeds for Atlantic salmon.
DOI Link: http://dx.doi.org/10.1017/S0007114517001842
Rights: © The Authors 2017 This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

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