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Influence of a dietary excess of rumen degradable or undegradable protein on the lactation performance of Dairy cows

Published online by Cambridge University Press:  21 November 2017

B. Sloan ,
P. Rowlinson  and
D.G. Armstrong
B. Sloan
Affiliation:
Department of Agriculture, University of Newcastle/Tyne
P. Rowlinson
Affiliation:
Department of Agriculture, University of Newcastle/Tyne
D.G. Armstrong
Affiliation:
Department of Agricultural Biochemistry and Nutrition, University of Newcastle upon Tyne
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Extract

The basis of the proposed scheme introduced by the A.R.C. (1980) for calculating the protein requirements of ruminants is the division of the protein requirement into two parts, (1) a minimum rumen degradable protein (RDP) supply to satisfy the requirements of the rumen microflora for cell wall synthesis, (2) a minimum undegradable protein (UDP) supply (protein that passes through the rumen to the intestine) which supplements the microbial protein produced in the rumen ensuring the tissue protein requirements of the ruminant can be met. The purpose of the experiment reported here was to investigate the effects on lactation parameters of feeding early lactation cattle levels of UDP or RDP above the minimum requirements proposed by the A.R.C. (1980).

Type
Winter Feeding of Dairy Cows
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1984 , March 1984 , pp. 3
Copyright
Copyright © The British Society of Animal Production 1984

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