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Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/2927

Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Influence of dietary conjugated linoleic acid (CLA) on lipid and fatty acid composition in liver and flesh of Atlantic salmon (Salmo salar)
Author(s): Kennedy, Sean Robert
Campbell, Patrick
Porter, Allan R
Tocher, Douglas R
Contact Email: drt1@stir.ac.uk
Keywords: Atlantic salmon
Salmo salar
CLA
dietary lipid content
liver
flesh
Lipid metabolism
Fatty acid composition
Issue Date: Jun-2005
Publisher: Elsevier
Citation: Kennedy SR, Campbell P, Porter AR & Tocher DR (2005) Influence of dietary conjugated linoleic acid (CLA) on lipid and fatty acid composition in liver and flesh of Atlantic salmon (Salmo salar), Comparative Biochemistry and Physiology - Part B: Biochemistry and Molecular Biology, 141 (2), pp. 168-178.
Abstract: The aim of the present study was to determine the effects of conjugated linoleic acid (CLA) on lipid and fatty acid metabolism in Atlantic salmon. The overall objective being to test the hypotheses that CLA has beneficial effects in salmon including growth enhancement, improved flesh quality through decreased adiposity and lipid deposition thereby minimising detrimental effects of feeding high fat diets, and increased nutritional quality through increased levels of beneficial fatty acids including n-3 highly unsaturated fatty acids (HUFA) and CLA itself. Salmon smolts were fed diets containing two levels of fish oil (low, ~18% and high, ~34%) containing three levels of CLA (a 1:1 mixture of 9-cis,trans-11 and trans-10,cis-12. at 0, 1 and 2% of diet) for 3 months and the effects on growth performance, liver and muscle (flesh) lipid contents and class compositions, and fatty acid compositions determined. The diets were also specifically formulated to investigate whether the effects of CLA, if any, were more dependent upon absolute content of CLA in the diet (as percentage of total diet) or the relative level of CLA to other fatty acids. Dietary CLA in salmon smolts had no effect on growth parameters or biometric parameters. However, there was a clear trend of increased total lipid and triacylglycerol contents in both liver and flesh in fish fed CLA, particularly in fish fed the high oil diets. Finally, CLA was incorporated into tissue lipids, with levels in flesh being 2-fold higher than in liver, but importantly, incorporation in liver was at the expense of saturated and monounsaturated fatty acids whereas in flesh it was at the expense of n-3HUFA.
Type: Journal Article
URI: http://hdl.handle.net/1893/2927
URL: http://www.sciencedirect.com/science/journal/10964959
DOI Link: http://dx.doi.org/10.1016/j.cbpc.2005.02.010
Rights: Published in Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology by Elsevier. Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, Volume 141, Issue 2, June 2005, pp. 168 - 178.; This is the peer reviewed version of this article.; NOTICE: this is the author’s version of a work that was accepted for publication in Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, VOL 141, ISSUE 2, (June 2005). DOI 10.1016/j.cbpc.2005.02.010.
Affiliation: University of Stirling
BioMar U.K.
University of Stirling
Aquaculture

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