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| 密闭蛋鸡舍内NH3浓度变化规律及其影响因子分析 |
| Variation of ammonia concentration and influence factors analysis in layer house |
| 投稿时间：2018-05-21 |
| DOI：10.13254/j.jare.2018.0131 |
| 中文关键词: NH3浓度，温度，湿度，密闭蛋鸡舍 |
| 英文关键词: ammonia concentration, temperature, relative humidity, layer house |
| 基金项目:国家重点研发计划项目（2018YFD0800100）；中央级公益性科研院所基本科研业务费专项（22060302008004） |
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| 中文摘要: |
| 鸡舍中的NH3已成为影响人畜健康的重要污染物，为了解蛋鸡养殖环境中NH3浓度变化规律，采用便携式畜禽舍环境动态监测仪对密闭笼养蛋鸡舍内NH3浓度和温湿度等指标进行测定，分析其变化规律及其与环境因子之间的相互关系。结果表明：试验鸡舍内日平均温度春季为（20.9±1.3）℃、夏季为（24.3±0.8）℃、秋季为（20.4±0.9）℃、冬季为（14.7±0.9）℃；日平均相对湿度春季为37.7%±4.9%、夏季为70.7%±3.0%、秋季为52.6%±3.4%、冬季为52.6%±1.6%；日平均NH3浓度春季为（2.46±1.01）mg·m-3、夏季为（0.03±0.02）mg·m-3、秋季为（4.72±1.73）mg·m-3、冬季为（3.05±0.41）mg·m-3。不同季节鸡舍内NH3浓度与温度和相对湿度均呈现一定的相关性，在高温条件下，鸡舍内NH3浓度随湿度的升高而增高，而在低温条件下，鸡舍内NH3浓度则随湿度的升高而降低。研究表明，环境的温湿度对鸡舍内NH3浓度影响很大，对鸡舍内温湿度的科学管理和合理调节是降低舍内NH3浓度的关键。 |
| 英文摘要: |
| Large-scale egg-production facilities are emission sources of various gases and particulate matter. Ammonia is one of the main gases emitted from laying hen houses. The ammonia emissions from housing systems for laying hens must be reduced to abate environmental damage. A study was conducted to monitor the concentration of NH3, temperature and relative humidity in layer house. Then the relationship between the concentration of NH3 and environmental factors were analyzed. The results showed that the average daily temperature was (20.9±1.3)℃,(24.3±0.8)℃,(20.4±0.9)℃, and(14.7±0.9)℃ in spring, summer, autumn and winter respectively. And the average daily relative humidity was 37.7%±4.9% in spring, 70.7%±3.0% in summer, 52.6%±3.4% in autumn and 52.6%±1.6% in winter. And the average daily concentration of ammonia was(2.46±1.01) mg·m-3 in spring,(0.03±0.02) mg·m-3 in summer,(4.72±1.73) mg·m-3 in autumn and(3.05±0.41) mg·m-3 in winter. The concentration of ammonia in the layer house in different seasons had a certain correlation with the temperature and relative humidity. The change of the ambient temperature and humidity influenced the concentration of ammonia in the layer house. It was observed that ammonia emission rates in summer were lower than in winter because the high airflow stabilized the manure by drying it. The reductions due to lower moisture content were greater than the increase due to higher temperature. |
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