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A comparison of four solvents for determining the proportion of soluble dry matter in fresh grass and grass silage

Published online by Cambridge University Press:  05 November 2021

E. R. Deaville ,
D. Komwihangilo  and
D. I. Givens
E. R. Deaville
Affiliation:
Feed Evaluation and Nutritional Sciences, ADAS Dairy Research Centre, Drayton Manor Drive, Alcester Road, Stratford-upon Avon, CV37 9RQ, UK
D. Komwihangilo
Affiliation:
Feed Evaluation and Nutritional Sciences, ADAS Dairy Research Centre, Drayton Manor Drive, Alcester Road, Stratford-upon Avon, CV37 9RQ, UK Dept. of Agriculture, University of Reading, Early Gate, Reading, RG6 6AT, UK
D. I. Givens
Affiliation:
Feed Evaluation and Nutritional Sciences, ADAS Dairy Research Centre, Drayton Manor Drive, Alcester Road, Stratford-upon Avon, CV37 9RQ, UK
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Extract

Most protein systems include an estimation of the proportion of protein (nitrogen x 6.25) which is immediately soluble in the rumen. However, since the procedures employed generally involve mechanically washing samples in cold water the validity of these values have been questioned. The aim of the present experiment was to compare different solvents with rumen liquor for determining the proportion of soluble dry matter (DM) in grass and grass silage.

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Proceedings of the British Society of Animal Science , Volume 1997 , 1997 , pp. 208
Copyright
Copyright © British Society of Animal Science 1997

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References

Licitra, G., Hernandez, T. M. and Van Soest, P J., 1996. Standardisation of procedures for nitrogen fractionation of ruminant feeds. Animal Feed Science and Technology, 57: 347–358.CrossRefGoogle Scholar
Vérité, R. and Demarquilly, C., 1978. Qualité de matières azotées des aliments pour ruminants. In: INRA (Eds.), La Vache Laitière. INRA, Versailles, pp. 143–157.Google Scholar