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

Citation:   No Citation available.
Authors:   R. R. Stowell, H. Keener, D. Elwell, T. Menke, and S. Foster
Keywords:   Swine housing, Aerial environment, Airflow, Manure handling, Solid manure

The design concepts of the High-Rise TM swine facility are presented along with thermal cond i tions, gas levels and airflow patterns within an instrumented finishing facility during its first four growouts (1998-99). The High-Rise TM facility is a two-story, above-ground structure that utilizes a drying plenum and a special ventilation strategy to produce smaller manure volume and manure that can be handled as a solid, while using pens with conventional slatted-floors. The novel ventilation system kept the mean air temperature within the pig space within a narrow band ( ± 1 o C) around the desired temperature. Air temperatures from one end of the facility to the other differed by up to 5.5 o C during cold weather extremes although the temperatures at the given locations were fairly constant. Measured ammonia concentrations in the pig space ave r aged 4.3 ppm with no readings exceeding 20 ppm. Ammonia concentrations in the lower story averaged 21.8 ppm with readings regularly exceeding 20 ppm during cooler months. Hydrogen sulfide levels in the facility were consistently below 1 ppm. Carbon dioxide readings averaged 1,270 ppm in the pig space. The manure mixture produced through the addition of bedding material and aeration was removed from the facility using a front-end loader. The average moisture content of this material ranged from 45-68% following clean-outs. (Download PDF)    (Export to EndNotes)