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Comparison of rumen liquor and faeces, in UK and Brazil, as sources of microorganisms for in vitro gas production for assessing twelve forages

Published online by Cambridge University Press:  20 November 2017

R. M. Mauricio ,
E. Owen ,
A.L Abdalla ,
I.C.S. Bueno ,
F. L. Mould ,
S. Gilmour  and
M.K. Theodorou
R. M. Mauricio
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, PO Box 236, Reading RG6 6AT
E. Owen
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, PO Box 236, Reading RG6 6AT
A.L Abdalla
Affiliation:
Centro de Energia Nuclear na Agricultura, Caixa Postal 96 – CEP 13400-970
I.C.S. Bueno
Affiliation:
Centro de Energia Nuclear na Agricultura, Caixa Postal 96 – CEP 13400-970
F. L. Mould
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, PO Box 236, Reading RG6 6AT
S. Gilmour
Affiliation:
Department of Applied Statistics, The University of Reading, Earley Gate, PO 240, Reading RG6 6FN
M.K. Theodorou
Affiliation:
Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth SY23 3EB
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Extract

In a previous study in Reading (altitude 66 m) (Mauricio et al., 1997) the lag phase was greater when cow faeces was used as a source of microorganisms in the in vitro gas production technique instead of rumen liquor when twelve temperate forages were fermented for 96 h. In the Reading study faeces and rumen liquor were obtained from a cow fed grass silage and concentrate (60:40). The present study was done in Piracicaba, Brazil-BR (altitude 780 m) which has a tropical climate. Using the same forages as in Mauricio et al. (1998), the study examined whether the same differences between faeces and rumen liquor would occur in a tropical environment. In addition, the opportunity was taken to develop an equation relating pressure and volume for the semi-automated pressure transducer technique and compare it with the equation developed in UK by Mauricio et al. (1998).

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Programme
Information
Proceedings of the British Society of Animal Science , Volume 1999 , 1999 , pp. 147
Copyright
Copyright © The British Society of Animal Science 1999

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References

France, J., Dhanoa, M.S., Theodorou, M.K., Lister, S.J., Davies, S.J. 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
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Mauricio, R.M., Dhanoa, M.S., Owen, E., Channa, K.S., Mould, F.L., Theodorou, M.K. 1998. Semi-automation of in vitro gas production technique using a pressure transducer. Proceedings of the British Society of Animal Science, 23-25th March 1998.Google Scholar
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