期刊论文

中文

草业学报

1004-5759

2011

20

1

183-188

国家自然科学基金项目（310720533067151630571351） 湖南省研究生科研创新项目（CX2010B284）资助

本校为第一机构

选取24头泌乳奶牛,随机分成A、B、C和D,4组,分别按剂量0.0（对照）,6.0,12.0和16.0mg/头静脉注射金属硫蛋白（MT）,以探讨外源性MT对奶牛产能性能和内分泌的影响。结果表明,B组1～30d、C组1～45d的标准产奶量显著高于A组,C组乳脂率在31～45d较A组有显著改善;B组INS含量30d显著高于A组;C组IGF-Ⅰ和T3含量45d最高,显著高于A组,而D组受到抑制;C组FSH和E2含量变化幅度最小;B组P含量30d时显著高于其他各组,PRL含量15d时显著高于A组;血清和乳中MT含量C和D组30～45d显著或极显著大于A组。说明外源性MT以12.0mg/头剂量效果最佳,间隔时间30～45d为宜。

Effects of exogenous metallothionein（MT） on energy production and incretion of China Holstein cows were studied using 24 lactating cows,randomly allocated to groups A,B,C and D.MT was supplemented at 0.0,6.0,12.0 and 16.0 mg/capita,respectively,by intravenous injection.In groups B（during 1-30 d） and C（during 1-45 d）,corrected milk yields were higher than that in group A.In group C during 31-45 d,milk fat percentage was significantly improved by comparison with group A.The INS serum content of group A was significantly lower than that of g...