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Diurnal odor and gas emission rates from different swine buildings under two climatic conditions

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2007 ASAE Annual Meeting  074132.(doi:10.13031/2013.23062)
Authors:   Yuanyuan Wang, Huiqing Guo
Keywords:   Odor, Ammonia, Hydrogen sulfide, Emission rate, Ventilation rate

The objective of this study was to obtain diurnal odor, ammonia and hydrogen sulfide concentration and emission rate profiles from different swine production buildings under hot and cold climates. Air samples were collected every 3 hours over a 48-hour period from one nursery room, one farrowing room and one gestation room in August and February. The results showed that there were significant differences of odor, ammonia and hydrogen sulfide concentrations between hot and cold climates for all three types of buildings except hydrogen sulfide concentration from farrowing room. Nursery room had the highest level of odor emission rates, followed by farrowoing room and gestation room in winter. However, mean odor emission rate from gestation room was the highest in summer due to its large ventilation rate. Large fluctuations and apparent diurnal variations of odor emission rates were observed in hot climate with peaks in late afternoon. In winter, odor and gas emission rates were relatively stable diurnally. Ventilation rate played a key role in determining the emission rates.

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