| 牛双胎的研究与应用 |
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| 引用本文： | 雷雪芹,陈宏,袁志发.牛双胎的研究与应用[J].中国牛业科学,2001,27(6):33-37. |
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| 作者姓名： | 雷雪芹 陈宏 袁志发 |
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| 作者单位： | 西北农林科技大学畜牧兽医学院,陕西杨凌,712100 |
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| 摘 要： | 牛双胎可显著的提高生产效率，对母牛和犊牛没有明显的不良影响，不利之处是异性双胎造成母犊不孕、。双胎是可以遗传的，双亲的影响较大；不同品种间的双胎率差异显著；另外胎次、季节、营养均影响双胎率。目前常用的提高双胎率的方法是通过遗传选择、激素诱导、激素免疫、胚胎移植等方法。但如果结合标记辅助选择法（MAS）、性别控制、及转基因与克隆技术将有助于快速提高双胎率，提高生产效益。
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| 关 键 词： | 牛 双胎 遗传选择 胚胎移植 激素免疫 激素诱导 繁殖率 |
| 文章编号： | 1001-9111(2001)06-0033-05 |
| 修稿时间： | 2001年9月20日 |
The Research and Application in Cattle Twinning |
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| LEI Xue-qin,CHEN Hong,YUAN Zhi-fa.The Research and Application in Cattle Twinning[J].China Cattle Science,2001,27(6):33-37. |
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| Authors: | LEI Xue-qin CHEN Hong YUAN Zhi-fa |
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| Abstract: | In cattle, increasing the twinning rate is one alternative for increasing beef production and milk production. There are no disadvantage to cows and its daughters beside twinning in isomerism. Twinning rate in cattle is heritable. In present cattle production, improving twinning rate strategies include hereditary and selection, embryo transplant and hormone immunity, hormone induction. In future, combining marker assistant selection (MAS) , sex-controlling, transfer gene and clone technology will be help to improve twinning rate and cattle production efficiency. |
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| Keywords: | Cattle Twinning Hereditary and selection Embryo transplant Hormone Immunity Hormone induction |
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