Journal ArticleDOI
Development of digestive enzymes in pigs with emphasis on lipolytic activity in the stomach and pancreas.
TLDR
The lipolytic enzymes displayed a non-parallel pattern of development, and it is suggested that this reflects the importance of these enzymes during the suckling and postweaning phases, respectively.Abstract:
The effect of age and weaning on the activities of digestive enzymes with emphasis on the lipolytic enzymes before and after weaning was investigated. 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 stomach in 45 pigs were response variables. The activity of trypsin was not affected by weaning and the rate of increase was similar during the whole experiment. The activities of chymotrypsin and amylase decreased at weaning (P < .05). After weaning the activity of chymotrypsin increased more slowly than before weaning (P < .001), whereas the rate of increase of amylase activity remained unchanged. Lipase, colipase, and carboxyl ester hydrolase activities decreased at weaning (P < .001), whereas gastric lipase activity increased at weaning (P < .01). The development of lipase, colipase, and carboxyl ester hydrolase activity decreased postweaning (P < .01), whereas gastric lipase activity increased before weaning and remained constant after weaning. Pancreatic lipase had a considerably higher capacity for hydrolyzing tributyrin, and the total activity of pancreatic lipase was up to 600 times higher than that of gastric lipase. The lipolytic enzymes displayed a non-parallel pattern of development, and we suggest that this reflects the importance of these enzymes during the suckling and postweaning phases, respectively. However, the significance of gastric lipase for the digestion of fat in pigs remains to be elucidated.read more
Citations
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Journal ArticleDOI
The digestion of dietary triacylglycerols
Huiling Mu,Carl-Erik Høy +1 more
TL;DR: Dietary triacylglycerols are the major lipid components in the human diet and they are carriers of energy as well as important fatty acids, so the influences of the fatty acid composition and the intramolecular structure of dietary TAGs on their digestion and absorption are summarized.
Journal ArticleDOI
Gastrointestinal health and function in weaned pigs: a review of feeding strategies to control post‐weaning diarrhoea without using in‐feed antimicrobial compounds
TL;DR: Some of nutritional strategies known to improve structure and function of gastrointestinal tract and (or) promote post-weaning growth with special emphasis on probiotics, prebiotics, organic acids, trace minerals and dietary protein source and level are focused on.
Journal ArticleDOI
Principles of Physiology of Lipid Digestion
E. Bauer,S. Jakob,R. Mosenthin +2 more
TL;DR: The process of lipid digestion continues in the duodenum where pancreatic triacylglycerol lipase (PTL) releases 50 to 70% of dietary fatty acids and carboxyl ester lipase, a pancreatic enzyme that is bile salt-stimulated and displays wide substrate reactivities, is involved in lipid digestion.
Journal ArticleDOI
Digestibility of nitrogen and amino acids in soybean meal with added soyhulls
TL;DR: The current data suggest that a 0.2% decrease in some true ileal indispensable AA digestibilities may result with each 1% increase in soyhull inclusion in semipurified diets containing SBM as the sole source of AA as fed to growing pigs.
Journal ArticleDOI
Influence of dietary zinc and copper on digestive enzyme activity and intestinal morphology in weaned pigs.
TL;DR: High dietary Zn increased the activity of several enzymes in the pancreatic tissue and increased the mucin staining area in the large intestine, whereas Cu had no clear effect on these variables, however, no definite answers were found as to how the growth promoting and diarrhea reducing effects of excess dietary ZN are exerted.
References
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TL;DR: A new type of α-amylase starch substrate rendered insoluble by cross-linking and coloured by a dye marker, was shown to be hydrolyzed by α-Amylase from Hyland standard serum, Versatol-E and Enzatrol, and it was possible, with considerable accuracy, to determine α- amylase over more than a thousandfold range of enzyme concentration.
Journal ArticleDOI
Secretion and contribution to lipolysis of gastric and pancreatic lipases during a test meal in humans.
TL;DR: Globally during the whole digestion period, gastric lipase might hydrolyze 1 acyl chain of 4, which need to be hydrolyzed for a complete intestinal absorption of monoglycerides and free fatty acids resulting from the degradation of two triglyceride molecules.