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ODOUR CONCENTRATIONS IN NATURAL VENTILATED PIG SHEDS IN AUSTRALIA
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Pp. 311-317 in Air Pollution from Agricultural Operations III, Proceedings of the 12-15 October 2003 Conference (Research Triangle Park, North Carolina USA), Publication Date 12 October 2003. 701P1403.(doi:10.13031/2013.15523)
Authors: X. Wang
Keywords: Emission rate, Dispersion modeling, Odour, Swine, Ventilation
In Australia, more than 90% of the existing pig sheds are naturally ventilated and they are normally regarded as volume sources for odor emissions. In this study, six conventional, naturally ventilated sheds of a piggery in New South Wales, Australia were investigated for about one and a half years during which odor samples were taken eight to eleven times. These sheds are grower shed, finisher shed, dry sow shed, mating shed, farrowing shed and weaner shed. A total of 121 odor samples were collected and measured in the study. ANOVA analyses of these results indicated that there was no significant difference between the odor concentrations at three different times (morning, afternoon and evening) of a day inside the same sheds. It was also found that there was no significant difference between the average odor concentrations in different months for most of the sheds. However, between the sheds there did exist significant differences between their odour concentrations. These observations were in agreement with some investigative results for mechanically ventilated sheds. Based on these observations, a concept of standard odor concentration for each type of sheds was suggested to replace the standard odour emission rate when doing odor dispersion modeling.
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