DEVELOPMENT OF DIGESTIVE ENZYMES IN PIGS WITH EMPHASIS ON LIPOLYTIC-ACTIVITY IN THE STOMACH AND PANCREAS

Citation
Ms. Jensen et al., DEVELOPMENT OF DIGESTIVE ENZYMES IN PIGS WITH EMPHASIS ON LIPOLYTIC-ACTIVITY IN THE STOMACH AND PANCREAS, Journal of animal science, 75(2), 1997, pp. 437-445
Citations number
39
Categorie Soggetti
Agriculture Dairy & AnumalScience
Journal title
ISSN journal
00218812
Volume
75
Issue
2
Year of publication
1997
Pages
437 - 445
Database
ISI
SICI code
0021-8812(1997)75:2<437:DODEIP>2.0.ZU;2-H
Abstract
The effect of age and weaning on the activities of digestive enzymes w ith emphasis on the lipolytic enzymes before and after weaning was inv estigated. The activities of amylase, chymotrypsin, trypsin, carboxyl ester hydrolase, pancreatic lipase, and colipase in pancreatic tissue and the activity of gastric lipase in the cardiac mucosa of the stomac h in 45 pigs were response variables. The activity of trypsin was not affected by weaning and the rate of increase was similar during the wh ole experiment. The activities of chymotrypsin and amylase decreased a t weaning (P < .05). After weaning the activity of chymotrypsin increa sed more slowly than before weaning (P < .001), whereas the rate of in crease of amylase activity remained unchanged. Lipase, colipase, and c arboxyl ester hydrolase activities decreased at weaning (P < .001), wh ereas gastric Lipase activity increased at weaning (P < .01). The deve lopment of Lipase, colipase, and carboxyl ester hydrolase activity dec reased postweaning (P < .01), whereas gastric lipase activity increase d before weaning and remained constant after weaning. Pancreatic lipas e had a considerably higher capacity for hydrolyzing tributyrin, and t he total activity of pancreatic lipase was up to 600 times higher than that of gastric Lipase. The lipolytic enzymes displayed a non-paralle l pattern of development, and we suggest that this reflects the import ance of these enzymes during the suckling and postweaning phases, resp ectively. However, the significance of gastric lipase for the digestio n of fat in pigs remains to be elucidated.