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Replacement of fish oil with sunflower oil in feeds for Atlantic salmon (Salmo salar L.): effect on growth performance, tissue fatty acid composition and disease resistance

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Bransden, MP and Carter, CG and Nichols, PD (2003) Replacement of fish oil with sunflower oil in feeds for Atlantic salmon (Salmo salar L.): effect on growth performance, tissue fatty acid composition and disease resistance. Comparative Biochemistry and Physiology Part B, 135 (4). pp. 611-625.

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Abstract

Dietary sunflower oil (SFO) was used to gradually replace fish oil (FO) in six diets (which also contained fish meal) for Atlantic salmon parr (initial mass: 21.7 g). The effect on growth performance, tissue fatty acid profiles and disease resistance was monitored after 63 days. At the conclusion of the trial, no significant differences were detected in growth between any of the feeds. Fatty acid composition of whole carcass, dorsal muscle and liver generally reflected that of the diets. Forty percent of the FO could be replaced by SFO before tissue 22:6n-3 was significantly reduced, although other essential and non-essential fatty acids were more susceptible to change. Significant differences were detected in cumulative mortality of Atlantic salmon challenged with Vibrio anguillarum at the trials conclusion, although this was not correlated to the inclusion level of SFO. Despite changes observed to the tissue fatty acid profile, there was no significant effect on growth suggesting that SFO is a suitable alternative to FO in the diets for Atlantic salmon parr when fish meal is also included.

Item Type: Article
Keywords: Atlantic salmon; disease resistance; fatty acid; fish oil; growth; sunflower oil
Journal or Publication Title: Comparative Biochemistry and Physiology Part B
Page Range: pp. 611-625
Identification Number - DOI: 10.1016/S1096-4959(03)00143-X
Additional Information: The definitive version is available at http://www.sciencedirect.com
Date Deposited: 23 Oct 2007 21:47
Last Modified: 18 Nov 2014 03:24
URI: http://eprints.utas.edu.au/id/eprint/2306
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