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Digestion of dry and high-moisture maize diets in the stomach of the pig

Published online by Cambridge University Press:  24 July 2007

J. H. G. Holmes ,
H. S. Bayley  and
F. D. Horney
J. H. G. Holmes
Affiliation:
Departments of Nutrition and Clinical Studies, University of Guelph, Guelph, Ontario, Canada
H. S. Bayley
Affiliation:
Departments of Nutrition and Clinical Studies, University of Guelph, Guelph, Ontario, Canada
F. D. Horney
Affiliation:
Departments of Nutrition and Clinical Studies, University of Guelph, Guelph, Ontario, Canada
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Abstract

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1. Pigs were fitted with re-entrant duodenal cannulas anterior to the pancreatic duct, and total collections of digesta were made for 12 h periods.

2. Maize–soya-bean diets were made from maize which had been harvested with a dry-matter content of 770 g/kg and either dried, preserved with acetic or propionic acid or ensiled naturally. The pigs received two meals of these diets/d at 12 h intervals, and the amount of digesta flowing through their cannulas was measured.

3. Between 4.5 and 5.25 l of digesta flowed through the cannulas in the 12 h collection period, 0.9 of the total 12 h flow passed through the cannulas in the first 9 h with the dry-maize diet and 0.8 with the acid-treated-maize diets.

4. The mean total dry matter intake was 358 g/meal, and 304 g dry matter passed through the duodenal cannulas in the 12 h collection period. The corresponding intake and flow of nitrogen (g/12 h) was 11.1 and 9.6, and for chromic oxide 1.13 and 0.94.

5. The pigs consumed 205 g starch (total α-linked glucose polymers)/meal, and 1.5 g free glucose/meal. Only 110 g starch and 4.1 g free glucose reached the duodenal cannulas, suggesting that digestion and absorption of up to 92 g glucose had taken place anterior to the pancreatic ducts.

Type
General Nutrition
Information
British Journal of Nutrition , Volume 32 , Issue 3 , November 1974 , pp. 639 - 646
Copyright
Copyright © The Nutrition Society 1974

References

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