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United States Department of Agriculture

Agricultural Research Service

Title: Effect of Dietary Crude Protein on Ammonia Emissions from Open-Lot Beef Cattle Feedyards

item Pandrangi, S - WTAMU
item Parker, D. - WTAMU
item Greene, L. - TAES
item Almas, L - WTAMU
item Rhoades, M - WTAMU
item Cole, Noel

Submitted to: American Society of Agricultural Engineers Meetings Papers
Publication Type: Abstract Only
Publication Acceptance Date: June 2, 2003
Publication Date: July 27, 2003
Citation: Pandrangi, S., Parker, D.B., Greene, L.W., Almas, L.K., Rhoades, M.B., Cole, N.A. Effect of Dietary Crude Protein on Ammonia Emissions from Open-lot Beef Cattle Feedyards. CD-ROM. Las Vegas, NV. American Society Of Agricultural Engineers Meetings Papers. 2003.

Technical Abstract: A laboratory study was performed to compare ammonia emissions from simulated feedlot surfaces. Beef cattle manure was collected from open lot pens at the USDA-ARS feedlot in Bushland, TX. Treatments within the pens consisted of two dietary crude protein concentrations (11.5 and 13%) and two protein sources (urea and cottonseed meal). Manure collected from the pens was placed into Tupperware® chambers in the laboratory. Chambers were sealed and ammonia was trapped in an acid solution for 15 days using a vacuum system. Results suggest that as the protein concentration in the diet increases, potential daily ammonia emissions increase. The source of crude protein had little effect on ammonia emissions.

Last Modified: 4/22/2015
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