外源性金属硫蛋白对中国荷斯坦奶牛产能性能和内分泌的影响

草业学报 ›› 2011, Vol. 20 ›› Issue (1): 183-188.

外源性金属硫蛋白对中国荷斯坦奶牛产能性能和内分泌的影响

吴力专^1,2,陈海燕¹,张彬^1*,李丽立^3*,陈宇光¹,肖定福¹,罗佳捷¹,吴宗明¹

1.湖南农业大学动物科学技术学院,湖南长沙 410128;
2.长江大学动物科学学院,湖北荆州 434025;
3.中国科学院亚热带农业生态研究所,湖南长沙 410125

出版日期:2011-02-22 发布日期:2011-02-22
通讯作者: E-mail:zhb8236@126.com,lili@isa.ac.cn
作者简介:吴力专(1973-),女,湖南醴陵人,讲师,在读博士。
基金资助:
国家自然科学基金项目(31072053;30671516;30571351)和湖南省研究生科研创新项目(CX2010B284)资助。

Effects of exogenous metallothionein on energy production and incretion of China Holstein cows

XIAO Ding-fu¹, LUO Jia-jie¹, WU Zong-ming¹

1.College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China;

2.College of Animal Science, Yangtze University, Jingzhou 434025, China;
3.Instisute of Subtropical
Agricultural Ecology, Chinese Academy of Sciences, Changsha 410125, China

Online:2011-02-22 Published:2011-02-22

摘要/Abstract

摘要： 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16.0 mg/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1～30 d、C组1～45 d的标准产奶量显著高于A组,C组乳脂率在31～45 d较A组有显著改善;B组INS含量30 d显著高于A组;C组IGF-Ⅰ和T₃含量45 d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30 d时显著高于其他各组,PRL含量15 d时显著高于A组;血清和乳中MT含量C和D组30～45 d显著或极显著大于A组。说明外源性MT以12.0 mg/头剂量效果最佳,间隔时间30～45 d为宜。

Abstract: 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 group B at 30 d; IGF-Ⅰor T₃ content of serum in group C was the highest at 45 d and the differences with group A were significant, while the IGF-Ⅰor T₃ of production in group D was inhibited. The ranges of variation of FSH or E₂ content in group C were the smallest of all the groups. The P content of in group B was significantly higher than that in other groups at 30 d, and the PRL content of group B was significantly higher than that in group A at 15 d. In groups B and C, MT contents of serum or milk were significantly higher than those in group A during the 30-45 d lactation period. In conclusion, the best choice was to supplement MT at 12 mg/capita for lactating cows by intravenous injection and a suitable time interval was once every 30-45 d.

中图分类号:

S823.9⁺.1

吴力专,陈海燕,张彬,李丽立,陈宇光,肖定福,罗佳捷,吴宗明. 外源性金属硫蛋白对中国荷斯坦奶牛产能性能和内分泌的影响[J]. 草业学报, 2011, 20(1): 183-188.

XIAO Ding-fu, LUO Jia-jie, WU Zong-ming. Effects of exogenous metallothionein on energy production and incretion of China Holstein cows[J]. Acta Prataculturae Sinica, 2011, 20(1): 183-188.

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