The secretion of pancreatic juice in sheep in different fed treatments

This experiment was undertaken to define the relations between the rate of fermentation in the forestomach and the amount of pancreatic rate flow and as well an activity of some pancreatic enzymes. The experiment was carried out on 12 ewes of the Polish Merino breed about 2 years old. In the fasted animals and those fed ad libitum the pancreatic rate flow was stable: in fasted animals from 15.7 to 18.0 ml.h-1, and in animals fed ad libitum from 27.2 to 33.7 ml.h-1. Temporary increase of the pancreatic rate flow (P = 0.01) was observed a few hours after administering the feed to the rumen. The amount of pancreatic secretion in sheep fed ad libitum was largest (P = 0.01) from that of all sheep from the other groups. The amylolytic activity oscillated greatly. It was lowest in fasted sheep (53 U.ml-1) and highest in animals fed ad libitum (439 U.ml-1). The lipolytic activity showed comparatively high stability (72-130 U.ml-1) in all groups.