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Effects of protein source, formaldehyde treatment and rumen-protected methionine on the metabolism and performance of pregnant and lactating ewes fed straw

Published online by Cambridge University Press:  20 November 2017

D. Handford ,
S.E. Pattinson ,
R.G. Wilkinson  and
L.A. Sinclair
D. Handford
Affiliation:
ASRC, School of Agriculture, Harper Adams University College, Edgmond, Newport, Shropshire TF10 8NB, UK
S.E. Pattinson
Affiliation:
ASRC, School of Agriculture, Harper Adams University College, Edgmond, Newport, Shropshire TF10 8NB, UK
R.G. Wilkinson
Affiliation:
ASRC, School of Agriculture, Harper Adams University College, Edgmond, Newport, Shropshire TF10 8NB, UK
L.A. Sinclair
Affiliation:
ASRC, School of Agriculture, Harper Adams University College, Edgmond, Newport, Shropshire TF10 8NB, UK
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Extract

Fishmeal is a suitable protein source for pregnant and lactating ewes, providing higher levels of undegradable protein than vegetable protein sources, with an improved biological value (Robinson, 1987). Vegetable protein sources may however be improved by formaldehyde treatment to reduce protein degradability and by the addition of rumen-protected amino acids. The objective of the current experiment was to compare the effects of feeding concentrates containing fishmeal with concentrates containing soya-bean meal, formaldehyde treated soya-bean meal and formaldehyde treated soya-bean meal with rumen-protected methionine.

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Type
Threatre Presentations
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Proceedings of the British Society of Animal Science , Volume 2001 , 2001 , pp. 54
Copyright
Copyright © The British Society of Animal Science 2001

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References

Ørskov, E.R. and McDonald, I. 1979. The estimation of protein degradation in the rumen from incubation measurements weighted according to rate of passage. Journal of Agricultural Science, Cambridge 92: 499–503.Google Scholar
Robinson, J.J. 1987. Energy and protein requirements of the ewe. In Recent Advances in Ruminant Nutrition. (eds Haresign, W. and Cole, D.J.A.), pp187–204. Butterworths; London.Google Scholar