Dietary n-3 highly unsaturated fatty acids affect the biological and serum biochemical parameters, tissue fatty acid profile, antioxidation status and expression of lipid-metabolism-related genes in grass carp,Ctenopharyngodon idellus

A 95-day feeding trial was conducted to determine the effects of n-3 highly unsaturated fatty acids (n-3 HUFA) on the growth, antioxidation and lipid metabolism in grass carp (Ctenopharyngodon idellus). Two isonitrogenous and isolipidic diets were formulated with either lard oil (LO) or fish oil (FO) as the main lipid source. The results showed that the intraperitoneal fat (IPF) ratio was significantly lower (P