The effect of helium neon laser irradiation on the morphology of small intestine of hatched broiler chicks

An experimental was conducted to determine the effect of helium neon laser irradiation on the morphology of small intestine of hatched broiler chicks. A total of 225 day old (Ross 308) broiler chicks were used in a completely randomized. Design with 3 treatments in 3 replicates (25 chickens per replicate). Experimental treat were: 1) without laser irradiation (control). 2) 6 mw laser irradiation, for 1.5 minute, 12 hours before incubation. 3) 10 mw laser irradiation, for 1.5 minute, 12 hours before incubation. At the ages of 21,28,36, and 42 days , 2 broiler was selected from each replication, and various sections of their small intestine were sampled in laboratory (1, 10, 30, 50, 70, 90% length of small intestine). And villi length, crypt depth, and their ratio were measured. The results of related to morphology of small intestine (villous length and crypts depth) showed distinguish between treatments were significant (P