Post-ruminal Degradation and Absorption of Carbohydrate by the Mature Ruminant

Sheep that had been fed a high carbohydrate ration were killed 3, 6 or 24 hours post-feeding to determine the relative amount and form of carbohydrate reaching the abomasum. The carbohydrate concentrations in abomasum contents, 3 hours post-feeding, was equal to 55% of the ration concentration. More...

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Bibliographic Details
Published inThe Journal of nutrition Vol. 89; no. 2; pp. 241 - 246
Main Authors Wright, P.L., Grainger, R.B., Marco, G.J.
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 01.06.1966
Subjects
Animals
Carbohydrate Metabolism
Intestinal Absorption
Sheep
Stomach - metabolism
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Summary:Sheep that had been fed a high carbohydrate ration were killed 3, 6 or 24 hours post-feeding to determine the relative amount and form of carbohydrate reaching the abomasum. The carbohydrate concentrations in abomasum contents, 3 hours post-feeding, was equal to 55% of the ration concentration. More total carbohydrate, due to more starch, was observed in the abomasum 3 hours post-feeding than 6 or 24 hours post-feeding. Starch and maltose were hydrolyzed and absorbed as glucose from the small intestine. The rate of hydrolysis of maltose and absorption of glucose was appreciably faster than the rate of blood glucose clearance, whereas the rate of starch hydrolysis was only slightly greater than the rate of blood glucose clearance. The latter difference was detectable only when a large amount of soluble starch was administered into the abomasum of sheep fed a high concentrate diet.
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ISSN:0022-3166
DOI:10.1093/jn/89.2.241