Effects of replacing fishmeal with soybean meal on growth performance, liver antioxidant capacity and intestinal health in juvenile Asian red-tailed catfish (Hemibagrus wyckioides)

The present study was to evaluate the effects of different levels of soybean meal (SBM) substitute for fish meal (FM) on the growth performance, antioxidant capacities, and intestine health of Asian red-tailed catfish, Hemibagrus wyckioides. Five isonitrogenous and isolipidic diets were prepared: the FM diets contained 50 % fish meal, based on which four SBM diets were formulated as substitutes for 15 %, 30 %, 45 % and 60 % FM in the FM group diets, namely SBM15, SBM30, SBM45, and SBM60. Compared with the FM group, the SBM45 and SBM60 groups exhibited significantly elevated serum glutamate pyruvate transaminase (GPT) levels and showed evidence of liver oxidative stress injury. Concurrently, there were decreases in triglyceride (TG) and total cholesterol (TC) levels (P