Midwest Dairy Association

Meet the Scientists

The Midwest Dairy Association Scientific Advisory Council is comprised of six leading dairy health, animal care and nutrition, farm environment, and dairy food experts.

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Scientific Advisory Council

The Midwest Dairy Association Scientific Advisory Council is comprised of six leading dairy health, animal care and nutrition, farm environment, and dairy food experts.

The Council, now in its fourth year, provides extensive knowledge and experience, combined with a real understanding of dairy farmers, dairy cows and dairy foods, to Midwest Dairy as it works to inform a variety of audiences about dairy production practices on the farm.



John Fetrow, VMD, MBA

John Fetrow, VMD, MBA

Professor, Veterinary Population Medicine

Dr. Fetrow has served on the faculty at colleges of veterinary medicine at the University of Minnesota (since 1991), North Carolina State University, and the University of Pennsylvania. He has more than three decades of on-farm dairy experience and academic work in dairy production medicine and field large animal practice. He is co-author of the “Herd Health: Food Animal Production Medicine” textbook, and has co-authored numerous articles in professional journals and for dairy production specialists. Dr. Fetrow’s current academic focus is in dairy production management, the economics of operating decisions made on dairy farms, disease control, and drug use management on dairies.


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Joe Harner, PhD

Joe Harner, PhD

Professor and Department Head

Dr. Joe Harner is an expert when it comes to the relationship between animal housing and animal care. He focuses on livestock systems and related environmental issues for dairy and beef cattle, as well as swine and sheep. He works extensively with state agencies, commodity groups, allied industry and individual farmers to develop facilities and systems to best meet the needs of animal and farmer.


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Mike Hutjens, PhD

Mike Hutjens, PhD

Extension Dairy Specialist, Animal Sciences

Dr. Mike Hutjens is an authority when it comes to nutrition for dairy cows. His expertise is directed toward animal well-being and quality milk production by focusing on the dairy cow's diet. As Extension Dairy Specialist at the university of Illinois he has been involved in numerous dairy intiiatives and conducted research in the area of dairy animal growth.


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Lloyd Metzger, PhD

Lloyd Metzger, PhD

Associate Professor, Dairy Science Department

Dr. Lloyd Metzger currently serves as an Associate Professor for Dairy Science at South Dakota State University. He is particularly knowledgeable on cheese manufacturing and often serves as a consultant for food manufacturers. If there is something you like about the taste of a particular type of cheese or the way it melts, chances are Dr. Metzger has contributed to the development of those flavor profiles and characteristics. Metzger also serve as the Director of the Midwest Dairy Foods Research Center.


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J.W. Schroeder, PhD

J.W. Schroeder, PhD

Associate Professor and Extension Dairy Specialist

In a career dedicated to education and Land Grant University outreach, Dr. J.W. Schroeder has a professional mission to conduct relevant research and extend a learning process that will advance the dairy and livestock industries across the region. He works with farmers to improve family farm sustainability through better production efficiency, enhanced environmental stewardship, optimal animal welfare, increased business opportunities, and improved community leadership.


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Leo Timms, PhD

Leo Timms, PhD

Associate Professor, Department of Animal Science

For a holistic approach to sustainable agriculture, look no further for an expert than Dr. Leo Timms. He combines aspects of biophysical science, such as production impact on soil and water and socioeconomics management and cost of resources, to help daiyr farmers build a plan for long-term sustainable success. As Professor of Animal Science at Iowa State University, he teaches animal medicine use to veterinary science students, and his research focuses on housing and facilities for dairy cows.


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