本文選題：奶牛 + 溫熱環(huán)境��； 參考：《中國畜牧獸醫(yī)》2017年10期

【摘要】：為研究寒區(qū)奶牛舍溫熱環(huán)境的年動態(tài)變化,試驗選擇河北省承德市某規(guī)�；膛鲆粭澤谟写澳膛Ｉ�,連續(xù)12個月監(jiān)測舍內(nèi)外的氣溫、相對濕度和風速并分析其規(guī)律。結(jié)果表明,全年奶牛舍內(nèi)、外氣溫均表現(xiàn)為中午高、早晚低的規(guī)律性變化,相對濕度則表現(xiàn)出相反的規(guī)律。夏季(6~8月)每天有7.5~10 h舍內(nèi)氣溫高于25℃,且在6月出現(xiàn)了舍內(nèi)氣溫高于舍外氣溫的現(xiàn)象。12月舍內(nèi)風速幾乎全天為0 m/s。從綜合指數(shù)分析,夏季每天09∶30~19∶30(10 h)舍內(nèi)溫濕指數(shù)(THI)均超過72,奶牛處于輕度熱應激狀態(tài);冬季的風寒溫度(WCT)均未低于-10℃,奶牛不遭受冷應激。綜合以上結(jié)果,對于寒區(qū)散欄有窗奶牛舍,夏季應加強防暑降溫措施,冬季加強通風換氣。
[Abstract]:In order to study the annual dynamic changes of the temperature and heat environment of dairy cattle in cold region, the experiment selected a large scale dairy cattle farm in Chengde, Hebei Province, to monitor the temperature, relative humidity and wind speed and analyze the regularity of temperature, relative humidity and wind speed in and out of the house for 12 months. The results showed that the internal and external air temperature of the dairy cattle in the whole year all showed regular changes of high noon and low morning and evening, while the relative humidity showed the opposite rule. During June ~ August, the temperature of 7.5 鈩，

本文編號：2043884