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Odor emissions were measured from nearly 200 odor sources on over 79 farms between March 1998 and November 1999. Air samples were collected from livestock and poultry building exhaust or from the surface of manure storage units and open feedlots using a portable wind tunnel. Air samples were analyzed for odor concentration with a triangular, forced-choice dynamic olfactometer. Measured concentrations were combined with building ventilation rates or portable wind tunnel airflow rates to determine odor emission rates. Odor emissions from manure storages ranged from 1.09 to 195.85 OUm3/m2-s and odor emissions from livestock and poultry buildings ranged from 0.06 to 72.45 OU-m3/m2-s. Average emission rates from deep pitted finishing barns were the highest among livestock and poultry buildings (20.85 OU-m3/m2-s) while broiler and turkey facilities had the lowest average emissions, 0.50 and 0.60 OU-m3/m2-s, respectively.

Document Type: Research Article


Publication date: 2000-01-01

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