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The effects of effective rumen degraded dietary protein and digestible undegraded protein on rumen fermentation and microbial protein synthesis in wether sheep given high levels of molasses

Published online by Cambridge University Press:  21 November 2017

T. Yan ,
D. J. Roberts  and
N. W. Offer
T. Yan
Affiliation:
SAC-Grassland and Ruminant Science Dept, Crichton Royal Farm, Dumfries DG1 4SZ
D. J. Roberts
Affiliation:
SAC-Grassland and Ruminant Science Dept, Crichton Royal Farm, Dumfries DG1 4SZ
N. W. Offer
Affiliation:
SAC-Biochemical Science Department, Auchincruive KA6 5HW
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Extract

The feeding of molasses influences the rumen fermentation by changing the balance of microbes in the rumen and their metabolism. One of the consequences is a decrease in efficiency of utilisation of dietary protein when high molasses levels are fed. The dietary protein requirements of ruminants may therefore be higher for diets containing high molasses levels. A previous experiment with dairy cows has shown positive responses in feed intake and milk production to increases in both effective rumen degraded dietary protein (ERDP) and digestible undegraded protein (DUP) in diets containing 310 g/kg DM of molaferm 20 (a mixture of 800 g cane molasses with 200 g condensed molasses solubles per kg, supplied by United Molasses) (Yan and Roberts, 1993). The current experiment was undertaken to evaluate the effects of dietary ERDP and DUP levels on rumen fermentation, hay DM degradability and microbial growth in the rumen of wether sheep.

Type
Nutrient Metabolism
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1994 , March 1994 , pp. 29
Copyright
Copyright © The British Society of Animal Production 1994

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References

reference

Chen, X. B., Kyle, D. J., Orskov, E. R. and Hovell, F. D. DeB. 1991. Renal clearance of plasma allantoin in sheep. Experimental Physiology 76:59-65.Google Scholar
Yan, T. and Roberts, D. J. 1993. The effects of dietary protein levels on the performance of lactating dairy cows given high levels of molasses. Animal Production 56:424 (Abstract).Google Scholar