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The influence of the temporal pattern of post-ruminal energy and protein supply on nitrogen metabolism in growing lambs

Published online by Cambridge University Press:  20 November 2017

W.G. Randles ,
M.A. Lomax  and
J.C. MacRae
W.G. Randles
Affiliation:
Department of Agriculture, MacRobert Building, University of Aberdeen, 581 King Street, Aberdeen AB24 5UA
M.A. Lomax
Affiliation:
Department of Agriculture, MacRobert Building, University of Aberdeen, 581 King Street, Aberdeen AB24 5UA
J.C. MacRae
Affiliation:
Rowett Research Institute, Greenburn Road, Bucksburn, Aberdeen AB21 9SB
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Extract

The poor efficiency with which ruminants utilise nitrogen (N) for growth may be due to differences in the temporal pattern of energy and protein absorption following a meal. Efficiency is higher in non ruminant animals where energy (glucose) and protein is absorbed from the same site and at the same time following a meal. Indeed, when an asynchronous pattern of energy and protein supply is imposed on non ruminants, the efficiency of nitrogen utilisation is reduced (Barja et al., 1972). The present experiment compares the efficiency of N utilisation in growing lambs given different temporal patterns of post-ruminal energy and protein supply.

Type
Threatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2001 , 2001 , pp. 30
Copyright
Copyright © The British Society of Animal Science 2001

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References

Barja, I., Araya, H., Munoz, P., Vega, L., Arteaga, A. & Tagle, M.A. (1972) Effect of spacing protein intake on nitrogen balance in normal children. American Journal of Clinical Nutrition 25: 506–511.Google Scholar