%0 Journal Article
%T Effects of exogenous metallothionein on thermoresistance and SOD gene expression of dairy cattle<br>外源金属硫蛋白对奶牛抗热应激调控及SOD基因表达的影响
%A DE Xing-hou
%A ZHANG Bin
%A XUE Li-qun
%A LI Li-li
%A DE Xing-hou
%A CHEN Yu-guang
%A WANG Jie
%A PENG Hui-zhen
%A XIAO Ding-fu
%A <br>张彬
%A 薛立群
%A 李丽立
%A DE Xing-hou
%A 陈宇光
%A 王洁
%A 彭慧珍
%A 肖定福
%J 应用生态学报
%D 2007
%I 
%X To approach the effects of exogenous metallothionein (Zn-MT) on the thermoresistance and SOD gene expression of dairy cattle, an experiment was conducted with 28 lactating cows, which were randomly allocated to groups A, B, C and D, and supplemented with 0, 6.0, 12.0 and 16.0 mg Zn-MT x capita(-1), respectively, by intravenous injection. The results showed that the pulse, breath rate, and serum MDA content of the cows in groups B, C and D were lower (P < 0.05 or P < 0.01), while their milk yield, serum- and milk MT contents, blood GSH-PX activity, erythrocyte SOD activity, and SOD gene expression level were higher (P < 0.05 or P < 0.01) than those in group A. All the test indices of the cows in groups C and D were superior (P < 0.05 or P > 0.05) than those in group B, but no significant difference (P > 0.05) was observed between groups C and D. Exogenous Zn-MT had the best effects on the thermoresistance and SOD gene expression of dairy cattle 30 days after injection. All of these suggested that exogenous Zn-MT should be a physiologically active substance effective to the thermoresistance and SOD mRNA expression of dairy cattle, and presented time- and dose-dependent effects.
%K SOD<br>金属硫蛋白
%K 热应激
%K 基因表达
%K 奶牛
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=D52BA66F0FA97647&yid=A732AF04DDA03BB3&vid=13553B2D12F347E8&iid=CA4FD0336C81A37A&sid=23104246A5FCFCEF&eid=FEF02B4635FE8227&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=6&reference_num=27