JDS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Journal of Dairy Science Vol. 85 No. 10 2603-2608
© 2002 by American Dairy Science Association ®
This Article
Right arrow Full Text
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 HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Lynch, H. A.
Right arrow Articles by Martin, S. A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Lynch, H. A.
Right arrow Articles by Martin, S. A.

Effects of Saccharomyces cerevisiae Culture and Saccharomyces cerevisiae Live Cells on In Vitro Mixed Ruminal Microorganism Fermentation

H. A. Lynch and S. A. Martin

Department of Animal and Dairy Science The University of Georgia, Athens 30602-2771

Corresponding author:
S. A. Martin; e-mail:
scottm{at}arches.uga.edu.

The objective of this study was to examine the effects of a Saccharomyces cerevisiae live cell product and a S. cerevisiae culture product on the in vitro mixed ruminal microorganism fermentation of ground corn, soluble starch, alfalfa hay, and Coastal bermudagrass hay. In the presence of ground corn, neither concentration (0.35 or 0.73 g/L) of S. cerevisiae culture nor live cells had any effect on final pH, H2, CH4, propionate, or butyrate. The S. cerevisiae culture had no effect on acetate, but both concentrations of S. cerevisiae live cells decreased acetate and the acetate:propionate ratio. When soluble starch was the substrate, both concentrations of S. cerevisiae live cells and 0.73 g/L of S. cerevisiae culture decreased the acetate:propionate ratio. Although the treatment effects were not statistically significant, both concentrations of live cells and 0.73 g/L of the culture decreased lactate concentrations compared with the control incubations. When alfalfa hay served as the substrate, neither the S. cerevisiae culture nor the live cells had an effect on propionate, butyrate, or the acetate:propionate ratio. Both concentrations of S. cerevisiae culture decreased the final pH and in vitro dry matter disappearance, and the 0.73 g/L treatment decreased the amount of acetate. However, both treatments of S. cerevisiae live cells increased final pH and decreased acetate and in vitro dry matter disappearance. Neither yeast treatment had much effect on the Coastal bermudagrass hay fermentations. In general, both S. cerevisiae supplements seemed to have similar effects on the mixed ruminal microorganism fermentation.

Key Words: Saccharomyces cerevisiaeculture • Saccharomyces cerevisiae live cells • rumen • fermentation

Abbreviation key: IVDMD = in vitro DM disappearance




This article has been cited by other articles:


Home page
 J ANIM SCIHome page
Z. A. Lila, N. Mohammed, T. Yasui, Y. Kurokawa, S. Kanda, and H. Itabashi
Effects of a twin strain of Saccharomyces cerevisiae live cells on mixed ruminal microorganism fermentation in vitro
J Anim Sci, June 1, 2004; 82(6): 1847 - 1854.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2002 by the American Dairy Science Association ®.