Animal Science Department


Date of this Version

January 2008


Published in 2008 Nebraska Swine Report. Prepared by the staff in Animal Science and cooperating Departments for use in Extension, Teaching, and Research programs. Copyright © 2007 by The Board of Regents of the University of Nebraska on behalf of the University of Nebraska–Lincoln.
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Trained participants monitored odors around a 4,800-head finishing site in eastern Nebraska during 2005 and 2006. “Mobile odor assessors” monitored odors within the downwind odor plume and reported that odors at off-site locations (at least 200 feet away) were consequentially annoying in 20 out of 192 assessments. On-site odor levels were considered annoying in 33 of 39 instances. For the same off-site locations and times, modeling predicted 18 annoying events, resulting in 90% prediction rate (18 vs. 20) of annoying frequency. Five residents regularly monitored for odors outside their residences and made 1,007 assessments. On 42 occasions, or 4.2% of the total, residents reported that annoying odor levels were present, equating to a 95.8% odor annoyance-free status. Predicted odor annoyance-free frequencies using the Odor Footprint Tool ranged from 90 to 99% for the five residences, given the locations of the residences and the livestock production facilities in the area.