利用呼吸频率比较不同温热指数在牛舍的应用  

Comparing Different Thermal Indices with Respiration Rate Application and its in Beef Cattle Barn

作　　者：李璟辉[1] 程琼仪 陈昭晖[1] 

机构地区：[1]中国农业大学动物科技学院,动物营养学国家重点实验室,北京100193

出　　处：《家畜生态学报》2014年第7期32-36,共5页Journal of Domestic Animal Ecology

基　　金：南方地区草食家畜舍饲小气候调控技术研究(201303145);国家肉牛牦牛产业技术体系(CARS-38)

摘　　要：肉牛耐寒怕热,准确评估夏季肉牛舍的环境条件十分重要。为此,在过去的研究中,人们提出了一系列温热指数。为找出在肉牛舍中较为准确的温热指数,论文比较了温湿指数(Temperature-Humidity Index,THI)、黑球湿度指数(Black Globe-Humidity Index,BGHI)、温湿风指数(Temperature-Humidity-Velocity Index,THVI)和热负荷指数(Heat Load Index,HLI)与肉牛呼吸频率的相关程度。结果表明,4个指数与呼吸频率都存在极显著的正相关(P<0.0001);HLI与呼吸频率的相关系数为0.76075,BGHI为0.69746,THVI为0.7374,THI为0.60381。HLI与呼吸频率的相关性最大,用HLI作为夏季肉牛舍的温热指数最准确。Beef cattle are cold-resistant but sensitive heat. It is important to assess environmental con- ditions of beef barn accurately in summer. Therefore, a series of thermal indices were developed in former research. In order to find out a more accurate index for beef barn, this paper compares the correlation of Temperature-Humidity Index （THI）, Black Globe-Humidity Index （BGHI）, Temperature-Humidity Velocity Index （THVI）, Heat Load Index （HLI） with respiration rate of beef cattle. The results showed that 4 indices are all significantly positively correlated to respiration rate（P〈0. 0001）. The correlation coefficient of HLI and respiration rate is 0. 76075, while that of BGHI is 0. 69746 and THVI is 0. 7374 and THI is 0. 60381. HLI is relevant to respiration rate most, so it is concluded as the most accurate index for beef barn thermal conditions assessment in this study.

关 键 词：夏季 肉牛舍 呼吸频率 温热指数 

分 类 号：S811.6[农业科学—畜牧学]