EXOCRINE PANCREATIC SECRETIONS IN PIGS AS INFLUENCED BY THE SOURCE OFCARBOHYDRATE IN THE DIET

Four barrows, initial wt. 70 kg, fitted with permanent pancreatic cann ulas according to the ''Pouch Method'', were used to investigate the e ffect of dietary inclusion of pectin on pancreatic secretions. The pig s were fed two com starch-based diets, containing 16 % crude protein f rom soybean meal, with 0 or 7.5 % pectin. The pigs were fed twice dail y, at 08:30 and 20:30, 900 g each meal. Pancreatic juice was collected continuously at 1-h intervals for a total of 24 h. The inclusion of p ectin did not affect (p > .05) the flow of pancreatic juice and the to tal secretion of nitrogen, lipase, trypsin and chymotrypsin. However, there was a significant (p < .05) decrease in the secretion of alpha-a mylase, which was actually a direct result of the replacement of starc h by pectin.