Intestinal pH and amylase activity at different segment(duodenum, jejunum and ileum) for beef cattle fed different diet(corn stover, diet composed of 50% corn stover and 50%corn) were determined. The results indicated that intestinal pH and amylase activity at different segment were different. Digesta pH in the ileum was higher than jejunum. Digesta pH in the ileum and jejunum were significantly higher than duodenum(P<0.05). Intestinal pH was lower for beef cattle fed diet composed of 50% corn stover and 50...