陕北窑洞笼养鸡环境调控效果分析

Environment Control Analysis of Cage Chicken For Cave-coop Raising in North Shaanxi

通过窑洞鸡舍环境调控,冬季在外界温度低于-10℃时,末调控组环境温度达到5.32℃以上,最高 12．14℃,调控组环境温度可达到9．78℃以上,最高达到15．17℃。夏季调控组比对照组舍内温度低1-2℃。窑洞鸡舍对环境温度调控能力有限,夏季和冬季均随环境温度的升降而升降。冬季比夏季窑洞对环境温度的调控效果好。窑洞鸡舍湿度冬季调控组比对照组低,夏季调控组与对照组接近。冬季窑洞鸡舍有害气体CO2和 NH3的含量比夏季高。NH3的含量在冬季和夏季均高于1．5 mg／m3的标准要求。但通过环境调控,舍内CO2 的含量调控组明显比对照组低,低于1500 mg／m3含量的标准要求。NH3的含量调控组明显低于对照组。窑洞鸡舍对NH3的含量调节通过自然通风换气的手段能力有限,需要采取其它措施。产蛋率冬季调控组比对照组提高19．37%,夏季调控组比对照组提高6．54％。冬季比夏季提高产蛋幅度明显。

Environment controlling is a key technology to egg hen in cave-coop-raising. By the way in the winter the environment temperature of cove-coop hen house is 9. 78 C which is higher than 5. 32 C in common. The highest temperature is 15. 17 C which is higher than 12. 14 C. In the summer the temperature of the controlling is 1-2 C lower than the common. The cave-coop hen house to control temperature is limited, In the summer or in the winter the temperature is influenced by the environment temperature. Cave-coop controlling temperature effect was better in winter than in summer. The humidity of cave-coop hen house in the controlling is lower than that in the no controlling, but it is close in summer. In winter the consistency of CO2 and NH3 is higher than in summer. Both in winter and in summer the consistency of NH3is higher than the standard of 1. 5 mg/ m3. But by the controlling the consistency of CO2 is obviously lower in the controlling than the common, and it is lower than the standard of 1500 mg/m3. Closely by the controlling the consistency of NH3 is obviously low. It is very limited that the consistency of NH3 is only regulated by the ventilating, and need take some measures. The laying rate is 19. 37% higher which it is in the controlling than the no controlling in winter, and it is 6. 54% in summer. The laying rate is obviously improved in winter than in summer.