温湿度指数对乳牛产乳量的影响

The Effect of Temperature-humidity Index on Yield of Milk of Dairy Cow

本文研究了夏季温热环境因素及温湿度指数 (THI)对中国黑白花乳牛生产性能的影响。结果表明 ,夏季气温 2 7℃、THI超过 6 9时 。

In this paper,the effects of THI and high-temperature in summer upon the prodctive property of dairy cow with black-white flower was studied.The result showed when air temperature was 25℃ and THI was 69 in summer,The yield of milk come down in this kind of dairy cow.