Articles | Volume 55, issue 2
Arch. Anim. Breed., 55, 194–205, 2012
https://doi.org/10.5194/aab-55-194-2012
Arch. Anim. Breed., 55, 194–205, 2012
https://doi.org/10.5194/aab-55-194-2012

  10 Oct 2012

10 Oct 2012

Fatty acid profile of fillet, liver and mesenteric fat in tilapia (Oreochromis niloticus) fed vegetable oil supplementation in the finishing period of fattening

T. Molnár1, J. Biró2, C. Hancz1, R. Romvári1, D. Varga1, P. Horn1, and A. Szabó1 T. Molnár et al.
  • 1Faculty of Animal Science, Kaposvár University, Kaposvár, Hungary
  • 2Institute for Fisheries, Aquaculture and Irrigation, Szarvas, Hungary

Abstract. Tilapia (Oreochromis niloticus) previously reared on a commercial feed were shifted to 3 experimental diets with added 5 % of soybean, linseed oil or fish oils, for 42 days as a finishing diet, according to literature recommendations. Fillet, liver and mesenteric fat total lipid fatty acid composition was determined and evaluated taking health and dietary recommendations into consideration. It was found that dietary vegetable oil fatty acids are effectively incorporated into tilapia hepatic and muscular total lipids, but have no pronounced effect on further fatty acid metabolism, in particular on the n-3 fatty acids. Liver was found to sensitively indicate elevated dietary lipid intake, as proven by its higher, most probably endogenous palmitate synthesis. Based on our results the application of vegetable oils to partially substitute fish oil for tilapia can be recommended in relation to the most important dietary lipid quality indicators.

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