Beyond Heat Stress, Time To Step Up Your Stress Fighting Game

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Sponsored By:

Target Audience:

  • Dairymen
  • Nutritionists
  • Consultants
  • Veterinarians

Heat stress, and the various behavioral and physiological effects in lactating dairy cows, costs the US dairy industry upwards of $1 billion dollars annually in production losses.  Management changes to cows’ environments can help reduce the negative effects of heat stress, but mitigation strategies go well beyond cow comfort.

Nutritional and digestive stressors brought about during bouts of heat stress, or during other times of the year represent potential production losses, lost revenue and potential for decreased profitability.  Maintaining consistency in the rumen and post-ruminal digestive tract requires timely dietary adjustments and strong consideration of feed additives.

This webinar will examine closely the impact of heat stress in lactating dairy cows with a focus on environmental and nutritional interventions.  Beyond heat stress, participants will review other nutritional and digestive stressors that potentially compromise cow health and lactation performance with particular attention to a specific nutritional mitigation strategy.

Attendees will learn:
•    What heat stress encompasses
•    Environmental and nutritional factors that can mitigate heat stress in lactating dairy cows
•    Other nutritional and digestive stressors that dairy cows are exposed to
•    A novel mitigation strategy for nutritional and digestive stressors in lactating dairy cows


Dave Natzke
Editor, Dairy Herd Management


Lance Baumgard, PhD
Professor of Nutritional Physiology | Iowa State University

Lance is a native of southwest Minnesota who grew up on a swine and row-crop farm. He has a B.S. and M.S. degree from the University of Minnesota and a PhD from Cornell University. Baumgard joined Iowa State University in 2009 and is the Norman Jacobson Professor of Nutritional Physiology in the Department of Animal Science. At Iowa State University, Lance’s Environmental Physiology efforts have evaluated how heat stress alters post-absorptive fuel selection in growing pigs and many of the same metabolic changes occurring in ruminants also occur in pigs.  His findings primarily explain why heat-stressed pigs accrue more lipid and less protein than energetically predicted.  He teaches Principals of Nutrition, and co-teaches Food Processing for Companion Animals at the undergraduate level and teaches Bioenergetics and co-teaches Advanced Ruminant Nutrition at the graduate level.  Lance has mentored or co-advised 8 PhD and 15 MS students and all of them are currently successful in a variety of industry and academic positions.

Keith Bryan, PhD
Chr. Hansen, Inc.

After earning three degrees and spending 20 years at Penn State University in the Department of Dairy and Animal Science, Dr. Bryan transitioned to the feed additive industry, focusing on silage inoculants and nutritional supplements that featured yeast, beneficial bacteria (probiotics), prebiotics and digestive enzymes.  Keith’s experience and expertise extend across a multitude of species and disciplines, focused primarily on nutritional support of production, health & reproduction for improved performance and sustainable economic return.  As Technical Services Manager for Silage Inoculants & Ruminant DFM at Chr. Hansen, Inc., Dr. Bryan’s time is devoted to improving efficiency of nutrient preservation and utilization at critical control points (CCP) through scientifically based and proven microbial technology. - See more at:

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