عنوان مقاله [English]
On day 16 of incubation 600 Ross 308 breeder fertile eggs were distributed into 5 treatments with 4 replicate and 30 eggs per replicate in a randomized complete block design. Experimental groups were, 1) Non- injected (control), 2) in ovo injection of 0.9% sodium chloride solution, 3) in ovo injection of 0.5% glutamine glutamine in 0.9% saline solution 4) in ovo injection of 1% glutamine in 0.9% saline solution and 5) non-injected group used for feeding a diet containing 1% glutamine during rearing period. At day 18 of incubation one ml of in ovo solution were injected into amniotic fluid of eggs and control group and 1% glutamine group (diet) remained non-injected but treated such as injected groups. Upon hatch, chicks were weighed and transferred to experimental house and reared for 42 days. At day 3 post-hatch, intestine samples were taken for morphology measurement. Antibody response against SRBC (sheep red blood cells) was measured in the 21 and 28 day. Comparing to control, in ovo injection of glutamine 0.5% increased hatchling weight significantly (P<0.05). In ovo injection of solutions had no significant effect on hatchability. in ovo administration of glutamine had no significant effects on feed intake and feed conversion ratio. Carcass traits, bursa of fabricius weight was higher in 0.5% glutamine injection groups, although the difference was not significant. In the current study, In ovo administration and dietary supplementation of glutamine had no significant effects on post-hatch performance, small intestine morphology and anti-SRBC immune response of broiler chicks.