坝下地区寒冷季节不同月份育肥牛舍内、外光照、风速差异化研究

目的]为了探讨张家口坝下地区寒冷季节育肥牛舍内外光照和风速的变化规律,以期发现该地区寒冷季节这两项指标的变化规律。方法]在张家口怀安县某肉牛场进行了入冬后不同月份牛舍内外光照和风速的研究,在试验前对开放式肉牛育肥舍的后窗进行了封堵,测试时间为2018年11月至2019年5月,每个月的11日、12日和13日进行测定并记录数据。结果]结果表明,坝下地区中午时间段光照强度大,育肥牛舍内外与密闭舍对比均有不同程度差异显著性(P<0.05或P<0.01);育肥舍及舍外风速也存在不同程度的差异显著性(P<0.05)变化或差异极显著变化(P<0.01)。结论]该结果为在张家口坝下地区冬季养好育肥牛,科学合理地修缮及改造牛舍提供理论依据和技术参数。

Study on the Difference of Light and Wind Velocity in Fattening Cowhouse in Different Months in Cold Season in Basha Area

Objective] In order to explore the change law of light and wind speed inside and outside fattening cattle shed in cold season in dam area of Zhangjiakou, we hope to find the change law of these two indexes in cold season. Method] The authors conducted a study on the light and wind speed inside and outside the cow house in different months of winter in a beef cattle farm in Huai’an county, Zhangjiakou, the rear window of the open beef cattle fattening house was sealed before the test. The test time was from November 2018 to May 2019, and the data were measured and recorded on the 11 th, 12 th and 13 th of each month. Result] The results showed that the light intensity at noon time in the area under the dam was large, and there was a significant difference between the inside and outside of the fattening barn and the closed house(P<0.05 or P<0.01). There were also different degrees of difference between the fattening house and the outside wind speed, significant changes(P<0.05) or significant differences(P<0.01). Conclusion] The results can provide the theoretical basis and technical parameters for raising and fattening cattle in winter and repairing and rebuilding cattle houses scientifically and rationally in bam area of Zhangjiakou.