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Nutrient balance study of the High-Rise hog system and associated windrow-composting process

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

Citation:  Paper number  032254,  2003 ASAE Annual Meeting . (doi: 10.13031/2013.14965) @2003
Authors:   Huawei Sun, Harold Keener, Frederick C. Michel, Jr.
Keywords:   High-Rise Hog Building (HRHB), Ammonia, Air quality, Swine manure, Mass balance, Nitrogen loss

The High-Rise . Hog Building (HRHB) is a novel hog production system where in drying and partial composting of manure is conducted to improve utilization and reduce liquid manure production. A mass balance approach was used to study the nutrient management through a commercial scale High-Rise . Hog Building (HRHB) and an associated commercial hog manure composting system. The mass balance was based on total hog weights, feed intake analysis, manure accumulation, and water usage, as well as initial and final compost weight. Results from both summer and winter operations showed that the weight of bedding used was approximately 45 kg/head, hogs gained weight at an average rate of 0.86 kg/head/day, feed consumption was 2.4 kg/head/day, solid or semisolid manure accumulated at a rate of 0.63 kg/head/day, and the nitrogen, phosphorous and potassium losses from the HRHB were about 2.67 kg/head, 0.1 kg/head and 0.75 kg/head, respectively. More data on a windrow composting process will be available during the meeting. The nutrient balance results will be used to conduct a comparative assessment of currently used and other alternative hog production and manure management systems.

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