Determination of morphology transformed small intestinal of broiler chicks due to nfluence of the levels of feed form and nutrients or ME of diets

The experiment was conducted with broiler to evaluate morphology transformedsmall intestinal due to influence of the levels of feed form and nutrients or metabolizable energy (ME) in broiler diets. 800 male Ross-308 broiler chicks were used. They were divided into 4 treatment groups of 25 randomly selected birds and 8 replications، and were housed in 32 pen floors، with controlled temperature and humidity at the rear parts، for 42 days. By termination of the nurturing، when the chicks come of 42 days old، 4 birds per pen were randomly selected and slaughtered. the small intestine was removed immediately and samples 3 centimeter in length were taken from the intestinal wall، 15 centimeter distal of the Meckel، s diverticulum، for measuring morphological characteristics. The results of experiment shown that nutrients and metabolizable energy requirement differences significantly effect the villus heights، crypt depts.، and villus widths (duodenums، jejunums and ileums) of small intestinal of broiler chicks. Pellet diets proved significant effect on the morphology of 3 parts of small intestines. Experiments showed that nutrients and metabolizable energy levels did not effect the morphology of duodenum small intestinal villus except ileum.