【摘要】 采用纵向通风的密闭式蛋鸡舍，冬季舍内的环境一直存在温度分布不均、垂直温差和水平温差均较大、进风口处的鸡群长时间处于冷应激状态和产蛋率低等问题。根据气体贴附射流的基本原理对传统的进风口进行了改进，并将改进前后进风口对舍内环境的影响作了实测比较。结果表明，改进后的进风口，具有避免鸡群冷应激、使舍内温度和二氧化碳分布趋于均匀、消除屋顶积灰、提高产蛋率等作用。对冬季蛋鸡舍进风口的适宜宽度作了分析，建立了确定冬季蛋鸡舍的进风口数量及其布置的实用模型。更多还原

【Abstract】 The problems of the inside environment of laying hen buildings with tunnel ventilation system 1n winter have not been fully solved. The inside temperature is not uniformed,the CO2 distribute with obviously drafts. Therefore in the local of air-inlet are always in cold-stress with low production rate. Using the principles of air-inlet jet, the traditional airinlet is improved. It has been shown that the improved air-inlet can be used to avoid the cold-stress on layers, and to uniform the inside air temperature, and to increase the production rate, to clear the dust piled under the roof together. The rational width of air-inlet used in winter is analysed. An applied model for determining the amount of air-inlet and its arrangement is put forward.更多还原