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Odor Management and Swine Finishing Building Characteristics: Costs and Effectiveness
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Pp. 323-329 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:10.13031/2013.15525)
Authors: H. Huang, G.Y. Miller, M. Ellis, T. Funk, G. Hollis, Y. Zhang, and A.J. Heber
Keywords: swine buildings, odor control, cost effectiveness, strategy selection, analytical hierarchy process (AHP)
Practices and building characteristics controlled by management are important contributors to the concentration of odor emitted from pig finishing buildings. The cost effectiveness of some odor control strategies shown to be important in odor concentration reduction is examined first and then the potential application of the Analytical Hierarchy Process (AHP) in odor management strategy selection is discussed. The strategies investigated include manure depth reduction, finishing building type (deep pit vs. shallow pit), air treatment, and feed type (ground vs. pelleted). The efficiency of each management strategy has previously been evaluated for its effect on odor reduction. The costs of each strategy are calculated on a per-pig marketed or annualized basis. Cost effectiveness is then defined as the ratio of the odor reduction efficiency to the cost per marketed hog for implementing that strategy. The results show that air treatment is the most cost-effective strategy for odor control in swine finishing buildings. Draining shallow pit systems once a week and using pelleted feeds are less cost effective than air treatment technologies. In addition, deep pit swine finishing systems are more cost effective than shallow pit buildings with outdoor anaerobic treatment systems. However, this does not mean that strategies should be selected in such an order because criteria other than cost effectiveness also play an important role in this decision-making. A basic AHP model for odor management strategy selection is hence introduced. We show that the AHP is a method that can be used for swine producers to make their individual odor management decisions. This study will better our understanding of the variation in costs for a unit reduction in odor concentration of different odor control strategies and provide useful information to swine consultants and producers for odor management decision-making.
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