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| Evaluation of a Novel System for Separate Collection of Feces, Urine and Flushing Water in Swine Lots |
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| KeyWord:swine lot; feces; urine; flushed water |
| Author Name | Affiliation | | WU Hua-shan | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Jiangsu Agricultural Waste Treatment and Recycle Engineering Research Center, Key Laboratory of Agro-Environment in downstream of Yangtze Plain, Ministry of Agriculture, Nanjing 210014, China | | CHANG Zhi-zhou | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Jiangsu Agricultural Waste Treatment and Recycle Engineering Research Center, Key Laboratory of Agro-Environment in downstream of Yangtze Plain, Ministry of Agriculture, Nanjing 210014, China | | DU Jing | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Jiangsu Agricultural Waste Treatment and Recycle Engineering Research Center, Key Laboratory of Agro-Environment in downstream of Yangtze Plain, Ministry of Agriculture, Nanjing 210014, China | | HUANG Hong-ying | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Jiangsu Agricultural Waste Treatment and Recycle Engineering Research Center, Key Laboratory of Agro-Environment in downstream of Yangtze Plain, Ministry of Agriculture, Nanjing 210014, China | | MA Yan | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Jiangsu Agricultural Waste Treatment and Recycle Engineering Research Center, Key Laboratory of Agro-Environment in downstream of Yangtze Plain, Ministry of Agriculture, Nanjing 210014, China |
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| Abstract: |
| Reducing pollutant discharges from animal farming systems is one of the most effective ways to control agricultural environmental pollution. A novel swine lot was designed to collect feces, urine and flushing water separately based on the excretion behaviors of swine. Its performances were then evaluated. The collection rates of feces in the designed swine lots（DSL） were increased by 1.1% and 3.8%, respectively, in winter and spring, as compared with those in the normal swine lots（CK）. The rates of urine collection were enhanced by 20.5% in winter and 15.1% in spring in DSL. The water content in the feces from DSL was 73.9% in winter and 69.6% in spring, being 3.1% and 4.8% lower than from CK, respectively. There were no statistical differences in nitrogen and phosphorus contents in feces between DSL and CK. However, chemical oxygen demand（COD）, nitrogen and phosphorus contents in the feces were significantly lower from DSL than from CK. In DSL, the consumption of flushed water was reduced by 23.7% and 30.5%, respectively, in winter and in spring, compared to CK. Nitrogen concentrations in the flushed water from DSL were reduced by 20.7% and 24.6%, phosphorus by 10.1% and 12.3%, and COD by 6.7% and 2.5%, respectively, during winter and spring, in comparison with CK. These findings show that the new waste collection system would help reduce pollutants from swine farming. |
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