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A non-invasive approach to determining extent of degradation in the rumen

Published online by Cambridge University Press:  20 November 2017

L.A. Crompton ,
J. France ,
E. Kebreab ,
J.A.N. Mills ,
M.S. Dhanoa ,
S. López  and
J. Dijkstra
L.A. Crompton
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, PO Box 236, Reading RG6 6AT, UK
J. France
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, PO Box 236, Reading RG6 6AT, UK
E. Kebreab
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, PO Box 236, Reading RG6 6AT, UK
J.A.N. Mills
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, PO Box 236, Reading RG6 6AT, UK
M.S. Dhanoa
Affiliation:
Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK
S. López
Affiliation:
Departamento de Producción Animal, Universidad de León, E-24007 León, Spain
J. Dijkstra
Affiliation:
WIAS Animal Nutrition Group, Wageningen Agricultural University. Marijkeweg 40, 6709 PG Wageningen. The Netherlands
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Extract

A non-invasive method is proposed for determining the extent of degradation in the rumen, based on the gas production technique and mathematical modelling. The exercise involves developing both a statistical model and a kinetic model (France et al., 2000). The statistical model shifts (or maps) the gas accumulation profile obtained using a faecal inoculum to a rumen gas profile, thus obviating the need for rumen sampling. The kinetic model determines the extent of degradation in the rumen from the shifted profile. It is presented as a generalised mathematical function, allowing any one of a number of alternative equation forms to be selected.

Type
Threatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2001 , 2001 , pp. 26
Copyright
Copyright © The British Society of Animal Science 2001

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References

France, J., Dhanoa, M. S., Theodorou, M. K., Lister, S. J., Davies, D. R. and Isac, D. 1993. A model to interpret gas accumulation profiles with in vitro degradation of ruminant feeds. Journal of Theoretical Biology 163: 99–111.CrossRefGoogle Scholar
France, J, Dhanoa, M.S., Crompton, L.A., Lopez, S., Dijkstra, J., Mauricio, R.M., Kebreab, E. and Owen, E. 2000. A non-invasive approach to determining extent of degradation in the rumen. In Gas Production: Fermentation Kinetics for Feed Evaluation and to Assess Microbial Activity, Proceedings of the EAAP Satellite Symposium on Gas Production, 18-19 August 2000, Wageningen, The Netherlands, pp 33–41. Edinburgh, British Society of Animal Science.Google Scholar
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