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The effect of dietary nitrogen and energy synchronisation on rumen fermentation and microbial protein synthesis in sheep

Published online by Cambridge University Press:  24 November 2017

L A. Sinclair ,
P. C. Gamsworthy ,
J. R. Newbold  and
P. J. Buttery
L A. Sinclair
Affiliation:
University of Nottingham, Faculty of Agricultural and Food Sciences, Sutton Bonington, Loughbotough, LE12 5RD
P. C. Gamsworthy
Affiliation:
University of Nottingham, Faculty of Agricultural and Food Sciences, Sutton Bonington, Loughbotough, LE12 5RD
J. R. Newbold
Affiliation:
Michigan State University, East Lansing, MI 48824, USA
P. J. Buttery
Affiliation:
University of Nottingham, Faculty of Agricultural and Food Sciences, Sutton Bonington, Loughbotough, LE12 5RD
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Extract

Balancing the rate of nitrogen and energy yielding substrates to rumen micro-organisms has been proposed in order to maximise the capture of rumen degradable nitrogen and to optimise microbial growth rate and efficiency (Johnson 1976). Current systems for diet formulation of ruminants are based upon the extent of fermentation of organic matter or carbohydrate fractions and the supply of rumen degradable and undegradable protein (ARC 1984, Webster, Dewhurst and Waters 1988). Little attention has been paid to the effect of the rate of supply of energy and nitrogen to rumen microorganisms in-vivo. The objectives of the current experiments were to formulate diets that had similar daily degradation of nitrogen and energy yielding components but varied in the rate of energy and nitrogen release based upon in-situ degradation characteristics of the raw ingredients, and to monitor the effect of these diets on rumen fermentation and microbial growth.

Type
Ruminant Nutrition
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1992 , March 1992 , pp. 5
Copyright
Copyright © The British Society of Animal Production 1992

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References

Agricultural research council 1984. The Nutrient requirements of Ruminant Livestock. Suppl. No. 1. Commonwealth Agricultural Bureaux.Google Scholar
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Ørskov, E. R. and McDonald, I. 1979. J. Agric. Sci. Cambs. 92: 499–503 CrossRefGoogle Scholar
Webster, A.J.F, Dewhurst, R.J and Waters, C.J. 1988. In: Recent Advances in Animal Nutrition. Butterworths.Google Scholar