Mitigating Ammonia Emissions from Animal Agriculture

Air emissions from animal agriculture operations consist of many different gases as well as suspended particulates (dust or microbes). One of these gases, ammonia, is gaining greater attention for its role in odor, but also as a precursor of fine particulate matter (PM 2.5). PM 2.5 has implications in haze and visibility as well as human health.

The materials on this page were developed to be used by educators and professors who include this topic in their classrooms or educational programs.

Fact Sheet

Sharon L. P. Sakirkin, Texas AgriLife Research; N. Andy Cole and Richard W. Todd, USDA-Agricultural Research Service; Brent W. Auvermann, Texas AgriLife Extension Service, Texas AgriLife Research

Alternate download: Ammonia from Cattle Operations part 1 (Introduction) and part 2 (abatement) combined in a single document (17 pages; PDF format)


Reducing Ammonia Emissions from Cattle Feedyards (5 min)

Andy Cole, USDA ARS


Mitigation of Nitrogen Excretion Through Dietary Manipulations

Mark Hanigan, Virginia Tech (14 minutes)

Note: the pixelation present at the start cleans up at the 2:00 minute mark

Presentation Slides

Archived Webinar

This webinar contains four individual video segments (ranging from 10 to 27 minutes) that discuss current and future mitigation options for reducing ammonia emissions from poultry litter. Presenters are: Eileen Wheeler, Pennsylvania State University; Hongwei Xin, Iowa State University; and Robert Burns, University of Tennessee. The archive also includes handouts and links to additional information. If you have difficulties please see our webcast troubleshooting page. If you need to download a copy of a segment, submit a request.


These materials were developed by the Air Quality Education in Animal Agriculture (AQEAA) project with with financial support from the National Research Initiative Competitive Grant 2007-55112-17856 from the USDA National Institute of Food and Agriculture.

For questions about the materials on this page contact Dr. Kevin Janni, University of Minnesota ( For questions about the AQEAA project, contact Dr. Rick Stowell, Unviersity of Nebraska (

If you have presentations, photos, video, publications, or other instructional materials that could be added to the curricula on this page, please contact Dr. Janni or Jill Heemstra (