北京地区平养育成鸡舍粉尘浓度分布的测试分析

Dust spatial distribution and emission in loose-rearing pullets house

鸡舍内粉尘浓度过高,会危害饲养员的健康和家禽的生产力,还会对周围环境造成污染。了解鸡舍内粉尘浓度空间分布情况,有助于进一步分析粉尘释放和传播规律,为开发更有效的除尘方法,提供一定的理论支持。该文首次应用恒流量多点粉尘测量仪在横断面处均匀布点,对北京某鸡场平养育成鸡舍的粉尘浓度进行了监测,就温湿度、风速、鸡群活动状况等影响粉尘浓度的相关因素进行了比较分析。结果表明:在日间,影响粉尘浓度的主要因素为动物活动。舍内风速对粉尘浓度的影响不显著(p＜0．05)。

Excessive dust concentration in chicken house is hazardous for worker health and poultry productivity, and also harmful to the environment.To understand dust spatial distribution is helpful to analyze the emission and transmission of dust,and helpful to develop more effective dust control method.A multi—point sampler was used to measure the dust distribution and emission within a loose—rearing pullets house.The sampling points were evenly distributed in a transverse section three meters near the fans.Temperature,relative humidity and wind velocity were recorded.Results show that animal activity is a main factor affects dust spatial distribution in daytime.Wind velocity of every sampling point doesn't have significant correlation with the dust concentration of every sampling point.