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Non-toxic plant tannins as silage additives: effect on proteolysis during ensilage

Published online by Cambridge University Press:  23 November 2017

E.R. Deaville ,
D.I. Givens  and
I. Mueller-Harvey
E.R. Deaville*
Affiliation:
Animal Science Research Group, School of Agriculture, Policy and Development, University of Reading, P.O. Box 237, Reading, RG6 6AR, United Kingdom
D.I. Givens
Affiliation:
Animal Science Research Group, School of Agriculture, Policy and Development, University of Reading, P.O. Box 237, Reading, RG6 6AR, United Kingdom
I. Mueller-Harvey
Affiliation:
Chemistry and Biochemistry Laboratory, Schoolof Agriculture, Policy and Development, P.O. Box 236, Reading, RG6 6AT, United Kingdom
*
Email:e.r.deaville@reading.ac.uk
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Extract

Sustainable ruminant livestock systems must promote an efficient use of resources for food production and minimise their environmental impact. Intensive dairy cow production, based on grass silage, is a major contributor to nitrogen (N) loss to the environment, estimated as 18.2 t N/t milk for grass silage-based diets (Delaby et al., 1995). It is widely accepted that this low efficiency (milk N/dietary N) value reflects the low efficiency of capture in the rumen of the extensively degraded N fraction in grass silage (Givens and Rulquin, 2004). A common feature of plant tannins is their capacity to bind proteins and an improvement in N utilisation by ruminants has been reported for a number of tanniniferous feeds (Mueller-Harvey, 2006). Therefore, the aim of the present experiment was to study the potential of various commercial non-toxic tannin products to reduce proteolysis during ensilage.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2007 , April 2007 , pp. 228
Copyright
Copyright © The British Society of Animal Science 2007

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References

Delaby, L., Peyraud, J.L. and Verité, R. (1995). Influence du niveau de production laitière et du système d’alimentation sur les rejects azotés du troupeau. Renc Rech Rumin, 2:349–353.Google Scholar
Givens, D.I. and Rulquin, H. (2004). Review: Utilisation by ruminants of nitrogen compounds in silage-based diets. Animal Feed Science and Technology 4:1–18.Google Scholar
Mueller-Harvey, I. 2006. Review: Unravelling the conundrum of tannins in animal nutrition and health. Journal of Science Food and Agriculture. 86:2010–2037.Google Scholar