热应激对干奶期奶牛甲烷排放量的影响  

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

作　　者：王小林[1,2] 张丹凤[3] 卜登攀[1] 周凌云[1] 孙鹏[1] 杨红建[4] 

机构地区：[1]中国农业科学院北京畜牧兽医研究所,动物营养学国家重点实验室,北京100193 [2]新疆农业大学动物科学学院,新疆乌鲁木齐830052 [3]中国农业大学生命科学学院,北京100193 [4]中国农业大学动物科技学院,北京100193

出　　处：《中国畜牧兽医》2012年第7期234-237,共4页China Animal Husbandry & Veterinary Medicine

基　　金：中国科学院知识创新工程重要方向项目(XDA01010301)

摘　　要：试验旨在研究不同程度热应激水平对奶牛甲烷排放量的影响。试验选用4头处于干奶期的经产中国荷斯坦奶牛,采用4×4拉丁方设计,利用环境控制舱检测温湿度指数(THI)在66、72、78和84条件下甲烷的产生量。结果表明,当奶牛处于应激状态时,CO2和CH4排放量均显著下降;单位饲料干物质所产生的甲烷量显著升高。因此,干奶期奶牛在热应激条件下,甲烷排放量显著下降。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 gen- eration 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 be- come significantly higher under heat stress conditions（P〈0. 01）. Therefore, the feed energy will be wasted badly under the heat stress conditions.

关 键 词：热应激 甲烷 干奶期奶牛 

分 类 号：S823.91[农业科学—畜牧学]