Effects of spray-dried blood cell meal with microencapsulated methionine substituting fish meal on the growth, nutrient digestibility and amino acid retention of Litopenaeus vannamei.

摘要

The effect of substitution of fish meal (FM) by spray-dried blood cell meal (SBCM) with microencapsulated DL-methionine supplementation in trial diets for Litopenaeus vannamei was evaluated. Six isonitrogenous (320 g kg-1) and isolipidic (85 g kg-1) diets were formulated to feed shrimp (2.3+or-0.2 g shrimp-1) for 56 days. Shrimp were fed with six diets in which FM protein was gradually replaced by SBCM protein (0%, 20%, 40%, 60%, 80% and 100% in diets 0-5). Growth performances and feed utilization of shrimp fed diets containing 0%, 3.5%, 7.0% and 10.5% SBCM protein were not significantly different (P