Response of broiler chicks to L-Glutamine feeding in the immediate pre- and post-hatch periods

This study was conducted to investigate the effects of in ovo and post-hatching supplementation with L-Glutamine (Gln) on hatching characteristics, performance, small intestinal morphology, muscle development broilers. At day 18 incubation, 960 fertilized eggs were allocated four treatments six replicates. Eggs i) not injected (negative control) (NC), ii) subject standard incubation procedure (PG), iii) 1 ml sterile solution 0.9% salt (positive (PC), iv) 1% Gln (IG). On hatching, SC chicks fed for seven days. The remaining a commercial starter feed. After there replicates 28 birds each treatment. Hatchability yolk sac weight lower yolk-free chick (YFCW), whole gastrointestinal tract (GIT) breast weights higher at from IG 42 days old, feed conversation ratio (FCR) that had added their diet than other treatments. FCR also NC group. GIT weight, villus height, width crypt depth receiving dietary greater those PC IG. Thus, injection improved characteristics except hatchability. Further, administration reduced by stimulating digestive system development.