J. Anim Sci.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Beuvink, J. M.
Right arrow Articles by Kogut, J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Beuvink, J. M.
Right arrow Articles by Kogut, J.

Journal of Animal Science, Vol 71, Issue 4 1041-1046, Copyright © 1993 by American Society of Animal Science

JOURNAL ARTICLE

Modeling gas production kinetics of grass silages incubated with buffered ruminal fluid

J. M. Beuvink and J. Kogut
DLO-Research Institute for Livestock Feeding and Nutrition (IVVO-DLO), Lelystad, The Netherlands.

Time course measurements of in vitro gas production of feedstuffs incubated with buffered ruminal fluid give information about the rate at which the feed is fermented. To compare gas production kinetics from different feeds, a mathematical model was needed to describe the data. We investigated several existing models (exponential, logistic, Gompertz, Richards, Schnute), fitting them to 50 gas production curves obtained with grass silages. None of them gave a satisfactory description of the data. A new model was developed (modified Gompertz model; mGom) that basically divided gas production into two fractions, one arising from rapidly fermentable feed components and the other from slowly fermentable feed components. Residual mean squares (RMS) for the mGom model were lower (P < .05; n = 50) than the RMS for the other models. A good statistical comparison of kinetic gas production data is made possible with the mGom model.




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1993 by the American Society of Animal Science.