Air quality management – Livestock and Poultry Environmental Learning Community

Livestock producers and industry professionals are increasingly focused on practical strategies to reduce emissions while maintaining productivity and profitability. This webinar will highlight current research and management approaches that can help mitigate emissions through improved nutrient utilization, feed management, and operational practices. Presenters will discuss both feed-based and post-excretion management strategies that support environmental stewardship across animal agriculture. This presentation was broadcast on October 23, 2026.

An application for continuing education credit for Certified Crop Advisors (CCAs) and members of the American Registry of Professional Animal Scientists (ARPAS) will be submitted.

Dietary Protein and Nitrogen Mass Balance in Open Feedlots

Galen Erickson, University of Nebraska (29:07)

Ammonia Emissions from Beef Cattle Feedyard: From Generation and Practical Mitigation

Myeongseong Lee, Texas A&M AgriLife Research (21:14)

Questions from the Audience

All Speakers (23:31)

About the Speakers

Galen Erickson, University of Nebraska

Galen Erickson, University of Nebraska

Dr. Galen Erickson joined the Department of Animal Science as an Assistant Professor and Extension Beef Feedlot Specialist in 2001, and has served as a Professor since 2010. He was named the Nebraska Cattle Industry Professor of Animal Science in 2012 and was appointed as the Director of the Beef Innovation Hub in 2022.

Myeongseong Lee, Texas A&M AgriLife High Plains Research and Extension Center

Myeongseong Lee, Ph.D., is a Postdoctoral Research Associate at Texas A&M AgriLife Research, where his research focuses on improving the environmental sustainability of livestock production systems. He earned his Ph.D. in Animal Science from Texas A&M University, with research focused on mitigating ammonia emissions from beef cattle feedyards. His research interests include livestock air emissions, manure management, nutrient utilization, and practical mitigation strategies that maintain or improve animal productivity while reducing environmental impacts. His current work also investigates the trade-offs associated with dairy manure application, including its effects on soil health and greenhouse gas emissions in integrated livestock-crop systems.

Rick Stowell (moderator), University of Nebraska

Rick Stowell, University of Nebraska

Dr. Rick Stowell joined the University of Nebraska-Lincoln in 2001 as an Assistant Professor and Extension Animal Environment Specialist and has been a full Professor since 2020. He has a split appointment between the Department of Biological Systems Engineering and the Department of Animal Science. Dr. Stowell is also a member of the leadership team for the Livestock & Poultry Environmental Learning Community.