Part 4: Megasphaera elsdenii & Milk Fat Depression: Summary of Experiments and Future Direction – Dr. Paul J. Weimer

June 15, 2017

Summary of Experiments and Future Direction

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

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Dr. Paul J. Weimer

Research Microbiologist
U.S. Dairy Forage Research Center, USDA Agricultural Research Service

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.

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