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Use of an automated pressure evaluation system to measure the fermentable energy content of ruminant feedstuffs: additivity of estimates

Published online by Cambridge University Press:  05 November 2021

J.R. Newbold ,
J. Baughan ,
D.R. Davies  and
M.K. Theodorou
J.R. Newbold
Affiliation:
BOCM PAULS LTD, 47 Key Street, Ipswich, IP4 1BX, United Kingdom
J. Baughan
Affiliation:
Institute for Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, SEY 3EB, United Kingdom
D.R. Davies
Affiliation:
Institute for Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, SEY 3EB, United Kingdom
M.K. Theodorou
Affiliation:
Institute for Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, SEY 3EB, United Kingdom
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Extract

The term 'fermentable metabolisable energy' (AFRC, 1992) has been criticised as an index of the supply of fermentable energy to the rumen because it has not been measured directly, is insensitive to rumen outflow rate and assumes fermentation of some nutrients which bypass the rumen (Newbold, 1994). One alternative is to describe the content of fermentable energy in terms of the amount of gas evolved during fermentation by ruminal microorganisms. The automated pressure transducer technique of Davies et al. (1995) has been applied to individual concentrate feedstuffs to provide an alternative database of fermentable energy content (Baughan et al., unpublished).

Type
Techniques
Information
Proceedings of the British Society of Animal Science , Volume 1996 , March 1996 , pp. 221
Copyright
Copyright © The British Society of Animal Science 1996

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References

AFRC (1992) Technical Committee on Responses to Nutrients, Report No. 9. Nutritive Requirements of Ruminant Animals: Protein. Nutrition Abstracts and Reviews, Series B, 62: 787–835 Google Scholar
Davies, DR, Theodorou, MK, Baughan, J, Brooks, AE and Newbold, JR (1994) An automated pressure evaluation system (APES) for determining fermentation characteristics of ruminant feeds. Annates de Zootechnie: 44, 36A.10.1051/animres:19950506CrossRefGoogle Scholar
Newbold, JR (1994) Practical application of the Metabolisable Protein system. Recent Advances in Animal Nutrition - 1994, ed. Garnsworthy, PC. Nottingham University Press.Google Scholar