The study investigated effects of MDA on the growth performance, structure and function of hepatopancreas and intestine of grass carp(Ctenopharyngodon idellus) and evaluated effects between MDA and other products of oxidized fish oil. Five isonitrogenous and isoenergetic diets were prepared with soybean oil, fish oil and different level of MDA for a 72-day experiment. The results indicated that MDA and other products of oxidized fish oil both significantly increased the FCR of grass carp and decreased the S...