Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-26T04:09:54.972Z Has data issue: false hasContentIssue false
  • English
  • Français

Mesenteric venous blood flow and the net absorption of glucose in sheep fed dried grass or ground maize-based diets

Published online by Cambridge University Press:  27 March 2009

A. N. Janes ,
D. S. Parker ,
T. E. C. Weekes  and
D. G. Armstrong
A. N. Janes
Affiliation:
Department of Agricultural Biochemistry and Nutrition, The University of Newcastle upon Tyne, Newcastle upon Tyne, NEl 7RU
D. S. Parker
Affiliation:
Department of Agricultural Biochemistry and Nutrition, The University of Newcastle upon Tyne, Newcastle upon Tyne, NEl 7RU
T. E. C. Weekes
Affiliation:
Department of Agricultural Biochemistry and Nutrition, The University of Newcastle upon Tyne, Newcastle upon Tyne, NEl 7RU
D. G. Armstrong
Affiliation:
Department of Agricultural Biochemistry and Nutrition, The University of Newcastle upon Tyne, Newcastle upon Tyne, NEl 7RU
Get access Rights & Permissions [Opens in a new window]

Summary

A surgical procedure is described for placing a catheter in the mesenteric vein of sheep, such that blood draining the reticulo-rumen is not sampled. This catheter, together withothers in the mesenteric vein and carotid artery, was used to determine mesenteric blood flow and the net absorption of glucose in five sheep fed both dried grass and ground maize-based diets. The mean (± S.E.) mesenteric blood flow rates were 33 ±0·9 and 37 ± 5·7ml/min/kg live weight when fed the dried grass and maize-based diets respectively. These flow rates, together with the small venousarterial differences in plasma volatile fattyacid concentrations observed, indicated that the mesenteric catheter did not sample blood draining the reticulo-rumen in the conscious, fed animal. Further confirmation was provided by subsequent post-mortem examinations of the catheters. When fed the dried-grass diet, a significant net absorption of glucose could not be detected. However, when fed the maize-based diet a net glucose absorption of 19·3 ± 0·75 mmol/h was observed.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 103 , Issue 3 , December 1984 , pp. 549 - 553
Copyright
Copyright © Cambridge University Press 1984

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Armstrong, D. G. & Smithard, R. R. (1979). The fate of carbohydrates in the small and large intestines of the ruminant. Proceedings of the Nutrition Society 38, 283–294.CrossRefGoogle ScholarPubMed
Barnes, R. J., Comline, R. S. & Dobson, A. (1983). Changes in blood flow to the digestive organs of sheep induced by feeding. Quarterly Journal of Experimental Physiology 68, 77–88.CrossRefGoogle Scholar
Beever, D. E., Coelho Da Silva, J. F. & Armstrong, D. G. (1970). The effect of processing maize on its digestion in sheep. Proceedings of the Nutrition Society 29, 43A.Google Scholar
Bergman, E. N. (1975). Production and utilization of metabolites by the alimentary tract as measured in portal and hepatic blood. In Digestion and Metabolism in the Ruminant (ed. McDonald, I. W. and Warner, A. C. I.), pp. 292–305. Armidale, New South Wales, Australia: University of New England Publishing Unit.Google Scholar
Bergman, E. N., Katz, M. L. & Kaufman, C. F. (1970). Quantitative aspects of hepatic and portal glucose metabolism and turnover in sheep. American Journal of Physiology 219, 785–793.Google Scholar
Gardner, J. W. & Thompson, G. E. (1974). A method for the determination of volatile fatty acids in the blood plasma of ruminant animals. The Analyst (London) 99, 326–329.CrossRefGoogle ScholarPubMed
Hales, J. R. S. (1973). Radioactive microsphere measurements of cardiac output and regional tissue blood flow in sheep. Pflügers Archive 344,119–132.CrossRefGoogle Scholar
Hogue, D. E., Elliot, J. M., Walker, E. F. & Vidal, H. (1968). The effect of hay-grain ratio on the composition of the gut contents of lambs. Proceedings of the Cornell Nutrition Conference 34, 57–60.Google Scholar
Huntington, G. B. (1982). Portal blood flow and net absorption of ammonia-nitrogen, urea-nitrogen and glucose in non-lactating Holstein cows. Journal of Dairy Science 65, 1152–1162.Google Scholar
Huntington, G. B. (1983). Net nutritional absorption in beef steers fed silage or high concentrate diets containing four levels of limestone. Journal of Nutrition 113, 1157–1164.Google Scholar
Huntington, G. B., Prior, R. L. & Britton, R. A. (1980). Glucose and lactate absorption and metabolic interrelationships in lambs changed from low to high concentrate diets. Journal of Nutrition 110, 1904–1913.CrossRefGoogle Scholar
Huntington, G. B., Prior, R. L. & Britton, R. A. (1981).Glucose and lactate absorption and metabolic interrelationships in steers changed from lowto high concentrate diets. Journal of Nutrition 111, 1164–1172.CrossRefGoogle Scholar
Katz, M. L. & Bergman, E. N. (1969). Simultaneous measurements of hepatic and portal venous blood flow in the sheep and dog. American Journal of Physiology 216, 946–952.Google Scholar
Moodie, E. W., Walker, A. I. T. & Hutton, P. H. (1963). The collection of portal and hepatic venous blood in conscious sheep. Quarterly Journal of Experimental Physiology 48, 279–287.Google Scholar
Ørskov, E. R., Fraser, C. & Kay, R. N. B. (1969). Dietary factors influencing the digestion of starch in the rumen and small and large intestines of early weaned lambs. British Journal of Nutrition 23, 217–226.CrossRefGoogle ScholarPubMed
Roe, W. E., Bergman, E. N. & Kon, K. (1966). Absorption of ketone bodies and other metabolites via the portal blood of sheep. American Journal of Veterinary Research 27, 729–736.Google ScholarPubMed
Schaefer, A. L. & Young, B. A. (1980). Gastrointestinal blood flow distribution in cold-exposed sheep. Canadian Journal of Animal Science 60, 677–681.Google Scholar
Tucker, R. E., Little, C. O., Mitchell, G. E., Hayes, B. W. & Karr, M. R. (1966). Starch digestion in different sections of the digestive tract of sheep. Journal of Animal Science 25, 911.Google Scholar
Tucker, R. E., Mitchell, G. E. & Little, C. O. (1968). Ruminal and postruminal starch digestion in sheep. Journal of Animal Science 27, 824–826.Google Scholar
Webster, A. J. F. & White, F. (1973). Portal blood flow and heat production in the digestive tract of sheep. British Journal of Nutrition 29, 279–292.CrossRefGoogle ScholarPubMed