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Comparison of the gas production and nylon bag techniques to determine the effect of physical treatments applied to hay or silage

Published online by Cambridge University Press:  27 February 2018

H. V. Petit ,
Y. Agbossamey ,
L. S. Thiago ,
P. Savoie ,
J. G. Buchanan-Smith ,
J. C. B. Plaizier  and
J. R. Seoane
H. V. Petit
Affiliation:
Agriculture and Agri-Food Canada, Lennoxville, QC J1M 1Z3, Canada
Y. Agbossamey
Affiliation:
Department of Animal Science, Université Laval, Québec, QC G1K 7P4, Canada
L. S. Thiago
Affiliation:
Embrapa-CNPGC, 79002-970, Campo Grande, MS, Brazil
P. Savoie
Affiliation:
Agriculture and Agri-Food Canada, Ste-Foy, QC G1V 2J3, Canada
J. G. Buchanan-Smith
Affiliation:
Department of Animal and Poultry Science, Guelph University, Guelph, ON N1G 2W1, Canada
J. C. B. Plaizier
Affiliation:
Department of Animal and Poultry Science, Guelph University, Guelph, ON N1G 2W1, Canada
J. R. Seoane
Affiliation:
Department of Animal Science, Université Laval, Québec, QC G1K 7P4, Canada
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Extract

The in situ dry matter disappearance technique (Ørskov and McDonald, 1979) evaluates forages for their rate and extent of degradation in the rumen. However, this method does not allow the evaluation of a large number of samples at one and the same time and therefore which limits screening of treatments applied to forages. The in vitro gas production method is faster and allows handling of many samples per batch; therefore, gas production could be an alternative to the use of nylon bags if the response to treatments between the two methods is similar among treated forages. The objective of this experiment was to compare results obtained with both the gas production and the nylon bag techniques for forages treated with four levels of maceration and conserved as hay or silage.

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Information
BSAP Occasional Publication , Volume 22: In vitro techniques for measuring nutrient supply to ruminants , 1998 , pp. 264 - 265
Copyright
Copyright © British Society of Animal Science 1998

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References

Ørskov, E. R. and McDonald, I. 1979. The estimation of protein degradability in the rumen from incubation measurements weighted according to rate of passage. Journal of Agricultural Science 92: 499–503.Google Scholar
Theodorou, M. K., Williams, B. A., Dhanoa, M. S., McAllan, A. B. and France, J. 1994. A simple gas production method using a pressure transducer to determine the fermentation kinetics of ruminant feeds. Animal Feed Science Technology 48: 185–197.Google Scholar