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Animal Reproduction and Physiology
Asian-Australasian Journal of Animal Sciences 2000;13(8): 1044-1049.
https://doi.org/10.5713/ajas.2000.1044    Published online August 1, 2000.
Response of Pancreatic Exocrine Secretion in Sheep Fed Different Type and Amount of Hay
X. B. Wang, K. Taniguchi, T. Obitsu
Abstract
Three wethers fitted with silastic catheters for collection of pancreatic juice, and cannulas located in the abomasum and the duodenum were used to investigate the effects of different hay and energy intake on pancreatic exocrine secretion. The wethers were fed Italian ryegrass hay or alfalfa hay at maintenance energy requirement and alfalfa hay ad libitum. High energy intake from alfalfa significantly increased abomasal flow of dry matter and both the concentration and daily secretion of 慣-amylase. The high energy intake also tended to increase daily secretion of lipase, trypsin and chymotrypsin through the large volume of pancreatic juice. Compared with Italian ryegrass hay, alfalfa hay at the maintenance decreased abomasal dry matter flow, but increased concentration of 慣-amylase in the pancreatic juice, and tended to increase daily secretion of 慣-amylase. The secretion of the other enzymes was not different between the two hays at maintenance intake. These results suggest that the kind of hay could change the concentration of慣-amylase in the pancreatic juice, and that the intake level of alfalfa hay affects the慣-amylase concentration and the juice volume secreted from the pancreas.
Keywords: Sheep; Pancreatic Juice; Alpha-Amylase; Hay
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