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Effect of imbalance between energy and nitrogen supplies on microbial protein synthesis in growing double-muscled Belgian Blue bulls

Published online by Cambridge University Press:  20 November 2017

D. Valkeners ,
Y. Beckers ,
F. Piron  and
A. Théwis
D. Valkeners*
Affiliation:
Gembloux Agricultural University, Passage des Déportés 2, 5030 Gembloux, Belgium
Y. Beckers
Affiliation:
Gembloux Agricultural University, Passage des Déportés 2, 5030 Gembloux, Belgium
F. Piron
Affiliation:
Gembloux Agricultural University, Passage des Déportés 2, 5030 Gembloux, Belgium
A. Théwis
Affiliation:
Gembloux Agricultural University, Passage des Déportés 2, 5030 Gembloux, Belgium
*
Email: valkeners.d@fsagx.ac.be
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Extract

Balancing the supply of nitrogen and energy-yielding substrates to rumen micro-organisms was proposed as a mechanism to maximise the capture of rumen degradable nitrogen (RDN) and to optimise microbial growth rate and efficiency. The objective of this study was to examine the effect of various time periods of imbalance between nitrogen and energy supplies for the rumen micro-organisms on the microbial protein synthesis (SPM) in growing double-muscled Belgian Blue bulls. This was realised by giving the same feedstuffs according to different meal patterns, which is one of the most robust test of the ‘synchrony’ hypothesis (Dewhurst et al., 2000).

Type
Cattle Nutrition
Information
Proceedings of the British Society of Animal Science , Volume 2003 , 2003 , pp. 123
Copyright
Copyright © The British Society of Animal Science 2003

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References

Dewhurst, R. J., Davies, D. R. and Merry, R. J. 2000. Microbial protein supply from the rumen. Animal Feed Science and Technology 85: 1–21 Google Scholar
Dawson, J. M. 1999. Variation in nutrient supply and effects on whole body anabolism. In: Proceedings VIIIth International Symposium on Protein Metabolism and Nutrition. (Eds Lobley, G. E., White, A. and MacRae, J. C.). EAAP Publications, Wageningen, pp.101–126 Google Scholar