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AMMONIA EMISSION FROM A GROUP-HOUSING FACILITY FOR DRY SOWS
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: No Citation available.
Authors: M.G.A.M. van Asseldonk , A. I. J. Hoofs , N. Verdoes1
Keywords: Ammonia emission, emitting surface, dry sows
In 1998 a new law was enforced in the Netherlands, requiring that dry sows be housed in groups. Moreover, standards for floor space were increased. At the Experimental Farm for Pig Husbandry “ South and West Netherlands ” at Sterksel sows were given the space between the individual stalls as extra space. Ammonia emission in this compartment, where ground tubes were applied, was limited by applying inclined pit walls and by using metal tribar slats. The emission was, on average, 2.15 kg of NH 3 per sow place per year. This is an average reduction of 49% compared with traditional housing. The extra investment and yearly costs for this compartment in relation to traditional compartments were about NLG 190 and NLG 29 per sow place, respectively.
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