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AMMONIA EMISSION FROM FOUR SYSTEMS FOR GROUP-HOUSED SOWS
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Pp. 122-128 in Swine Housings II Proceedings of the 12-15 October 2003 Conference (Research Triangle Park, North Carolina USA), Publication Date 12 October 2003. 701P1303.(doi:10.13031/2013.15477)
Authors: M. Timmerman, A. I. J. Hoofs, and A. V. van Wagenberg
Keywords: Ammonia emission, sows, group housing, sloped pit walls
In The Netherlands in the 1990's many housing systems with low ammonia emission for individual housed dry and pregnant sows were developed. Because of welfare regulations dry and pregnant sows must be housed in a group since 1998 for new and remodeled buildings and for all buildings in 2008. Regulation for ammonia emission is requiring that only housing systems with a maximum ammonia emission of 2.6 kg of NH3 per sow place per year can be used. Four new housing systems for group-housed sows were developed which are simple, flexible and use concrete slats. The systems were: