The results on the effects of FOS on the digestive enzyme activities in the pancreas and the small intestinal contents of growing pigs are shown in Table 4 and Table 5,respectively. Supplementation with 4 and 6 g/kg FOS significantly improved the activities of total protease,trypsin and amylase in the small intestinal contents.However, FOS had no significant effect on the activities of chymotrypsin and lipase in the small intestinal contents as well as the digestive enzymes in pancreas.