关于保温简易猪舍结构的研究

试验利用4种不同形式的简易猪舍,分析隔热、覆棚两个结构因素对猪舍环境的影响及其对肥育猪生产的作用。结果表明,隔热因素使屋顶热流密度减少61.4%。使舍温升高7.8℃,湿卡他冷却力降低,严寒期肥育猪日增重提高40g;覆棚因素使畜舍换气量减少60%,减弱低温冷气流的影响,CO_2,NH_3气体含量仅分别增至3.1mL/L,8.5μL/L,均在空气卫生环境限界之内。

A STUDY ON SIMPLE WARM PIG HOUSES

An experiment was carried out to study the effects of increasing thermal insulation and covering polythelene sheet on simple pig house environment and performance of pigs.The results showed that in- creasing thermal insulation decreased thermal flux density by 61.4 mL/L,and hence the temperature in the house increased by 7.7℃,and the humidity decreased as was expressed by the wet katathermometer.Daily gain of growing pigs raised in the insulated house in severe winter was increased by 40 g.Covering the house with polythelene sheet resulted in an decrease in ventilation rate by 60 mL/L,and hence,reduced the effect of cold airflow.The concentrations of CO_2 and NH_3 in the covered house increased only to 3.1% and 8.5μL/L respectively,both of which were within the hygienic standard for animal production.