Effects of Fermented Soybean in Diffent Levels on Structure of Intestinal Mucosa in Broilers

A total of 240 AA chickens at 1-day old were randomly divided into 4 groups,and each group had 6 replication (10 broilers per replication). The control group was fed corn-soybean diet meal,and the treatment diets of groups Ⅰ,Ⅱand Ⅲ were formulated by adding fermented soybean,5%,10%,15%,respec-tively. Experiment periods were 42 d. The results from the tissue section showed that compared with the control,duodenum villi height,jejunal crypt depth,duodenum intestinal paries thickness and duodenum villi height/crypt depth(V/C) of groupsⅠ,Ⅱand Ⅲwere significant differences. Ileum intestinal villi height,duodenum crypt depth and jejunal villi height/crypt depth(V/C)were significant differences for group Ⅱ. Ileum intestinal paries thickness and its villi height/crypt depth(V/C) were significant differences for groups Ⅱ and Ⅲ.