南方冬季肉牛舍空气环境分析

【作者】 牛欢； 张政； 颜培实；

【机构】 南京农业大学动物科技学院；

【摘要】 肉牛舍的温热环境及空气卫生环境状况对肉牛的健康和增重及对饲料的采食量和利用效率有重要影响。国内对南方冬季肉牛舍的环境研究较少,本文对江西省三个牛舍舍进行温度、含湿量及几种有害气体的现场测试,对舍内的空气卫生条件进行分析研究。结果表明:在南方冬季气候条件下,全封闭舍内温度在6-13℃之间,含湿量很高,在中午最高能达到20000 ppm,而半封闭舍和开放舍舍内温度和含湿量随外界环境影响很大,温度较低。半开放舍和开放舍的换气量明显大于全封闭舍,有害气体浓度小于全封闭舍,其中CH₄、CO₂气体浓度显著差异。CH₄、CO₂和NH₃在全封闭舍一天中出现规律性变化,在一天中下午时刻达到最大值,在半封闭和开放舍中气体一天中变化不明显。本研究对三个舍0.5m,1m,1.5m三个高度的气体进行检测,三个高度的气体没有显著性差异。更多还原

【Abstract】 Beef house warm environment and air hygiene environment has an important effect on cattle health, weight gain, feed intake and utilization efficiency. There is less study on the barn environment of the south in winter in domestic, this paper test the temperature, field moisture content and several harmful gas of three barn of Jiangxi province for analyzing and studying on air health conditions in barns. The result show that : in the south the winter weather conditions, fully enclosed interior temperature was 6-13℃, moisture content is very high, at a maximum of 20000 mg/m³, and semi closed and open house’s temperature and moisture content have a lower temperature with the external environment influence. The ventilation volume of semi closed and open house was significantly greater than the full closed shed, harmful gas concentration of less than full closed shed, where CH₄, CO₂ concentration is significant difference. Gas concentration of CH₄, CO₂ and NH₃ regular changes in a day and reach maximum moment in the day afternoon, but the gas concentration does not change significantly during the day in the semi-closed and open barn. The three height of the gas of 0.5 m,1 m and 1.5 m were detected in the study, there is no significant difference in three height of the gas.更多还原