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| Monitoring and analysis of thermal environment and harmful gas concentration in a piggery with a new manure cleaning system |
| Received:November 04, 2021 |
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| KeyWord:livestock house;online monitoring;thermal environment;toxic gases |
| Author Name | Affiliation | E-mail | | LI Zhonghan | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | ZHANG Keqiang | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | BA Shidi | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | YANG Zengjun | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | environmental@foxmail.com |
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| Abstract: |
| In order to explore the environmental indicators, obtain effective monitoring data, and provide a reference for improving the environmental quality of a pig house with a new manure removing system in a large-scale farm, a piggery with a new type of manure removing system was selected as the research object in this study to conduct seasonal monitoring of the thermal environment indicators and harmful gas concentration and analyze the seasonal variation in temperature, humidity, and ammonia and hydrogen sulfide concentrations in the piggery with the new manure cleaning system. The monitoring results show that temperature and humidity ranges in different seasons were 14.7~31.8℃ and 62.7%~75.3%, with annual mean of(21.8±4.1)℃ and 69.2%±2.5%, respectively. Ammonia and hydrogen sulfide concentrations ranged from 1.89 mg·m-3 to 10.47 mg·m-3 and 0.59 mg·m-3 to 1.39 mg·m-3, with annual mean of(5.48±2.12)mg·m-3 and (0.86±0.17)mg·m-3, respectively. There were also seasonal variations in temperature, humidity, and harmful gas concentration in the pig house, with the highest harmful gas concentration in winter and the lowest in summer, and kept in the appropriate range throughout the year. It seems that the new manure cleaning system can maintain the appropriate temperature and humidity and effectively reduce harmful gas concentration in the piggery, which can provide a good environment for the growth of pigs. |
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