The effect of feeding time (day versus night) and feeding frequency on pancreatic exocrine secretion in pigs |
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| Authors: | J A M Botermans M S Hedemann M S rhede‐Winzell CH Erlanson‐Albertsson J Svendsen L Evilevitch S G Pierzynowski |
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| Institution: | J. A. M. Botermans,M. S. Hedemann,M. S. örhede‐Winzell,CH. Erlanson‐Albertsson,J. Svendsen,L. Evilevitch,S. G. Pierzynowski |
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| Abstract: | The effect of night feeding and feeding frequency on exocrine pancreatic secretion was studied in five chronically catherized growing pigs (16 to 31 kg). Feeding during the night (2200 to 2400 h) as compared to the day (1000 to 1200 h) tended to stimulate cholesterol ester lipase activity and tended to lower the colipase : lipase ratio in the pancreatic juice, but no effect on volume output, protein output and the activities of trypsin, chymotrypsin, amylase, lipase and colipase could be demonstrated. Feeding 12 small meals between 0800 and 2000 h as compared to one large meal (1000 to 1200 h) daily, altered the pattern of exocrine pancreatic secretion, tended to stimulate protein output by 44 %, chymotrypsin activity by 29 % and lipase activity by 46 %. These observations strengthened the theory that exocrine pancreatic secretion is partly regulated by feed intake per se and does not only depend on the amount of feed consumed. Feeding 12 small meals versus one large meal, compared at the same total daily feed intake, lowered the colipase : lipase ratio by 32 %. It can be concluded that feed intake pattern affected exocrine pancreatic secretion. |
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