Hostname: page-component-6bf8c574d5-j5c6p Total loading time: 0 Render date: 2025-03-09T23:08:39.341Z Has data issue: false hasContentIssue false
  • English
  • Français

Comparison of five models used to describe gas accumulation profiles in the gas test method with horse caecal fluid as inoculum

Published online by Cambridge University Press:  27 February 2018

D. Macheboeuf  and
J. van Milgen
D. Macheboeuf
Affiliation:
INRA, Station de Recherches sur la Nutrition des Herbivores, 63122 Saint-Genès-Champanelle, France
J. van Milgen
Affiliation:
INRA, Station de Recherches Porcines, 35590 Saint-Gilles, France
Get access

Extract

The in vivo organic matter digestibility (OMD) in ruminants can be predicted with the gas test method by the amount of gas produced after 24-h fermentation (Menke et al., 1979). Mathematical models can also be used and can provide useful information concerning the kinetics of fermentation. In ruminants, various models have been used to fit fermentation profiles. The early models are based on first-order kinetics with a constant fractional rate of fermentation (Ørskov and McDonald, 1979; Khazaal et al., 1993). Recently, more sophisticated models have been used to describe gas production kinetics obtained from new automated gas production equipment (Theodorou et al., 1995; Cone et al., 1996). The aim of this study was to compare the relevance and the accuracy of five models for describing gas production kinetics and for predicting the organic matter digestibility (OMD) of forages in horses.

Type
Posters
Information
BSAP Occasional Publication , Volume 22: In vitro techniques for measuring nutrient supply to ruminants , 1998 , pp. 185 - 186
Copyright
Copyright © British Society of Animal Science 1998

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bouvier, A. and Huet, S. 1993.Reference manual of the nls2 library. Statlib, http://lib.stat.cmu.edu/S/nls2.html Google Scholar
Cone, J. W., Gelder, A. H. van, , Visscher, G. J. W. and Oudshoorn, L. 1996. Influence of rumen fluid and substrate concentration on fermentation kinetics measured with a fully automated time related gas production apparatus. Animal Feed Science and Technology 61: 113–128 CrossRefGoogle Scholar
France, J., Dhanoa, M. S., Theodorou, M. K., Lister, S. J., Davies, D. R. and Isaac, D. 1993. A model to interpret gas accumulation profiles associated with in vitro degradation of ruminant feeds. Journal ofTheoretical biology 163: 99–111.Google Scholar
Groot, J. C. J., Cone, J. W., Williams, B. A., Debersaques, F. M. A.and Lantinga, E. A. 1996. Multiphasic analysis of gas production kinetics for in vitro fermentation of ruminant feeds. Animal Feed Science and Technology 64:77–89.Google Scholar
Khazaal, K., Dentinho, M. T., Ribeiro, J. M. and Ørskov, E. R. 1993. A comparison of gas production during incubation with rumen contents in vitro and nylon bag degradability as predictors of the apparent digestibility in vivo and the voluntary intake of hays. Animal Production 57: 105–112.Google Scholar
Macheboeuf, D., Jestin, M., Andrieu, J. and Martin-Rosset, W. 1998. Prediction of the organic matter digestibility of forages in horses by the gas test method. In In vitro techniques for measuring nutrient supply to ruminants(ed. Deaville, E. R., Owen, E., Adesogan, A. T., Rymer, C., Huntington, J. A. and Lawrence, T. L. J.), pp. 252–254. British Society of Animal Science occasional publication no. 22.Google Scholar
Menke, K. H., Raab, L., Salewski, A., Steingass, H., Fritz, D. and Schneider, W. 1979. The estimation of the digestibility and metabolizable energy content of ruminant feeding stuffs from the gas production when they are incubated with rumen liquor in vitro . Journal of Agricultural Science, Cambridge 92: 217–222.CrossRefGoogle Scholar
Menke, K. H. and Steingass, H. 1988. Estimation of the energetic feed value obtained from chemical analysis and in vitro gas production using rumen fluid. Animal Research and Development 28: 7–55.Google Scholar
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, Cambridge 92: 499–503.Google Scholar
Statistical Sciences. 1993. S-PLUS user's manual,version 3.2. Statsci, a division of Mathsoft, Inc., Seattle.Google Scholar
Theodorou, M. K., Davies, D. R., Nielsen, B. B., Lawrence, M. I. G. and Trinci, A. P. J. 1995. Determination of growth of anaerobic fungi on soluble and cellulosic substrates using a pressure transducer. Microbiology 141: 671–678.Google Scholar