Effects of dietary biotin on growth performance and fatty acids metabolism in blunt snout bream, Megalobrama amblycephala fed with different lipid levels diets

A 2 × 2 factorial design was conducted to elucidate the effect of dietary biotin on growth performance, body composition, tissue lipid content and lipid metabolism related genes expression of blunt snout bream, Megalobrama amblycephala fed with different dietary lipid levels. Juvenile fish (average initial weight: 36.0 ± 1.0 g) were fed with diets containing two lipid levels (5% and 11%) and two biotin levels (0.06 mg kg − 1 and 2.50 mg kg − 1 ) for 8 weeks, respectively. Specific growth rate (SGR), hepatosomatic index (HSI), mesenteric fat index (MFI), hepatopancreas lipid, total triacylglycerol (TG) and cholesterol (TC) contents, plasma TG and muscle TG contents were significantly ( P P P P P P P