June 19 2017 01:42 PM

Summary of Experiments and Future Direction

The information below has been supplied by dairy marketers and other industry organizations. It has not been edited, verified or endorsed by Hoard’s Dairyman.
Check out this final segment from Dr. Paul J. Weimer, from the U.S. Dairy Forage Research Center, as he wraps up this four part series on Megasphaera elsdenii & Milk Fat Depression: A good bug gone bad.

What you will learn:
  • In 3 separate experiments, M. elsdenii was shown to be strongly associated with MFD in Holstein cows on a variety of diets.
  • In 3 dosing experiments, M. esdenii failed to induce MFD even when dosed into cows from which the strains had originally been isolated during previous bouts of MFD.
  • Causative role of M. elsdenii in MFD remains unproven in the absence of strain persistence.
  • Future direction of research

Watch Now!

Rather read than watch?

Download PDF

Other Videos in this Series

See what you missed!

- Part 1: Monensin, Rapidly Degradable Starch and Rumen Bacteria Community
- Part 2: pH, Silage Inoculants, and Rumen Bacterial Community Composition
- Part 3: Ruminal Dosing to Establish if M. elsdenii is a Causeative Agent of MFD

Paul J. Weimer
Dr. Paul Weimer received his BS in Biology from Carroll College (WI), and MS and PhD in Bacteriology from the University of Wisconsin-Madison. After 10 years at the Central Research and Development Department at DuPont, he joined the USDA-ARS Dairy Forage Research Center in Madison, WI in 1988. His research interests include rumen microbiology and the role of rumen microbes in determining milk composition and feed efficiency; microbial fiber degradation; and microbial production of volatile fatty acids.