热应激对干奶期奶牛甲烷排放量的影响

Abstract

Abstract: This study is to explore heat stress on the methane emissions of cows. Four dry period Chinese Holstein cows were selected in this study. According to 4?4 Latin square design,environment chamber was used for checking methane generation under the conditions of the temperature and humidity index 66,72,78 and 84, respectively. The results showed that CO₂ and CH₄ production would be decrease significantly (P<0.01) and the emissions methane by unit of feed dry matter become significantly higher under heat stress conditions(P<0.01). Therefore,the feed energy will be wasted badly under the heat stress conditions.

Key words: heat stress; methane; dairy period dairy cows

CLC Number:

S823.9+1

WANG Xiao-lin, ZHANG Dan-feng, BU Deng-pan, ZHOU Ling-yun, SUN Peng, YANG Hong-jian. The Effect of Heat Stress on Methane Emissions in Dry Period Cows[J]. , 2012, 39(7): 234-237.

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The Effect of Heat Stress on Methane Emissions in Dry Period Cows

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