金属硫蛋白对奶牛抗应激能力的影响
Effects of metallothionein on anti-stress ability in dairy cattle
为探讨外源性金属硫蛋白(MT)对奶牛抗应激能力的影响，选取24头中国荷斯坦奶牛经产泌乳母牛，随机等分为A、B、C、D 4组，分别每头静脉注射经生理盐水溶解的Zn-MT 0（对照），5.0，10.0和15.0 mg，测定了各组奶牛的GSH-Px、SOD、CAT等抗氧化酶活性、总抗氧化能力(T-AOC)和丙二醛(MDA)含量。结果表明：B组、C组和D组奶牛的GSH-Px、SOD、CAT和T-AOC均显著（P﹤0.05或P﹤0.01）高于对照组；而MDA含量均显著（P﹤0.05）低于对照组。说明MT不失为一种能够有效调控奶牛抗应激能力的生理活性物质。
In order to approach the effects of exogenous metallothionein(MT) on anti-stress ability in dairy cattle, 24 lactating cows from Chinese Holstein wrer used in this experiment. They were randomly allocated to Group A,groupB, Group C and Group D,and MT was supplemented at 0 mg.capita-1,5.0 mg.capita-1,10.0 mg.capita-1 and 15.0mg.capita-1 respectively by intravenous injection.The results showed that the activities of blood GSH-Px, Erythrocyte SOD and serum CAT and the serum levels of the cows in group B,Group C and Group D were higher（P﹤0.05 or P﹤0.01）than those in Group A,while the serum MDA content were lower（P﹤0.05）than those in Group A. The experimental results suggested that exogenous MT should be an effective anti-stress substance and physiologic accommodation composition for dairy cattle.
李丽立、杨夏、张彬
畜牧、动物医学生物化学
金属硫蛋白抗应激GSH-Px-AOCMDA奶牛
metallothioneinanti-stressGSH-Px-AOCMDAdairy cattle
李丽立,杨夏,张彬.金属硫蛋白对奶牛抗应激能力的影响[EB/OL].(2011-03-31)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/201103-1187.点此复制
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