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Application of a dynamic mechanistic model of small intestinal starch digestion in the dairy cow

Published online by Cambridge University Press:  20 November 2017

J. A. N. Mills ,
E. Kebreab ,
L. A. Crompton ,
J. Dijkstra  and
J. France
J. A. N. Mills
Affiliation:
Biomathematics Group, Department of Agriculture, The University of Reading, Earley Gate, P.O. Box 237, Reading, RG6 6AR, UK
E. Kebreab
Affiliation:
Biomathematics Group, Department of Agriculture, The University of Reading, Earley Gate, P.O. Box 237, Reading, RG6 6AR, UK
L. A. Crompton
Affiliation:
Biomathematics Group, Department of Agriculture, The University of Reading, Earley Gate, P.O. Box 237, Reading, RG6 6AR, UK
J. Dijkstra
Affiliation:
Animal Nutrition Group, Wageningen Institute of Animal Sciences (WIAS), Wageningen University, Marijkeweg 40, 6709 PG Wageningen, Netherlands
J. France
Affiliation:
Biomathematics Group, Department of Agriculture, The University of Reading, Earley Gate, P.O. Box 237, Reading, RG6 6AR, UK
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Extract

The high contribution of postruminal starch digestion (>50%) to total tract starch digestion on certain energy dense diets (Mills et al. 1999) demands that limitations to small intestinal starch digestion are identified. Therefore, a dynamic mechanistic model of the small intestine was constructed and evaluated against published experimental data for abomasal carbohydrate infusions in the dairy cow. The mechanistic structure of the model allowed the current biological knowledge to be integrated into a system capable of identifying restrictions to dietary energy recovery from postruminal starch delivery.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2002 , 2002 , pp. 104
Copyright
Copyright © The British Society of Animal Science 2002

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References

Cant, J.P., Luimes, P.H., Wrtighjt, T.C. and McBride, B.W. 1999. Modelling intermittent digesta flow to calculate glucose uptake capacity of the bovine small intestine. American Journal of Physiology 276: G1442–G1451 Google Scholar
Krehbiel, C.R., Britton, R.A., Harmon, D.L., Peters, J.P., Stock, R.A. and Grotjan, H.E. 1996. Effects of varying levels of duodenal or midjejunal glucose and 2-deoxyglucose infusion on small intestinal disappearance and net portal glucose flux in steers. Journal of Animal Science 74: 693–700 Google Scholar
Kreikemeier, K.K. and Harmon, D.L. 1995. Abomasal glucose, maize starch and maize dextrin infusions in cattle: Small intestinal disappearance, net portal glucose flux and ileal oligosaccharide flow. British Journal of Nutrition 73: 763–772 CrossRefGoogle ScholarPubMed
Kreikemeier, K.K., Harmon, D.L., Brandt, R.T., Avery, T.B. and Johnson, D.E. 1991. Small intestinal starch digestion in steers: Effect of various levels of abomasal glucose, corn starch and corn dextrin on small intestinal disappearance and net glucose absorption. Journal of Animal Science 69: 328–338 Google Scholar
Mills, J.A.N., France, J. and Dijkstra, J. 1999. A review of starch digestion in the lactating dairy cow and proposals for a mechanistic model: 2. Postruminal starch digestion and small intestinal glucose absorption. Journal of Animal and Feed Sciences 9: 451–481 CrossRefGoogle Scholar