Partial or total replacement of fish meal by corn gluten meal in diet for turbot (Psetta maxima)

摘要

The effect of maize gluten meal (CGM) as a partial or total replacement of fish meal was studied in P. maxima. Five experimental diets containing a gradient of CGM were fed to triplicate groups of turbot (initial body weight of 65 g) over 9 weeks at17deg C. Turbot fed on a diet containing 20% of CGM had growth performance comparable to those fed a fish meal-based diet. Total replacement of fish meal adversely affected growth. Digestibility of nutrients and energy of the diets decreased with increasein levels of dietary maize gluten meal. Supplementation of arginine and lysine in diets containing CGM induced an improvement in the availability of these amino acids. The incorporation of CGM in diets significantly affected plasma cholesterol and triglyceride concentrations while no effect was observed on plasma thyroid hormones. The results suggest that protein from CGM can replace one third of fish meal protein in the diets for P. maxima.