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| 奶牛双胎的发生及其对奶业生产的影响 | |
| 引用本文： | 刘广振,陈红玲,唐冬生.奶牛双胎的发生及其对奶业生产的影响[J].乳业科学与技术,2006,28(3):138-140,144. |
| 作者姓名： | 刘广振 陈红玲 唐冬生 |
| 作者单位： | 1. 华南农业大学动科学院,广东,广州,510642 2. 广东华农温氏畜牧股份有限公司 3. 佛山大学生命科学学院动物科学系 |
| 摘 要： | 奶牛在一个发情周期内如果同时排出两个成熟卵子，经过受精和发育，就可能出现双胎现象。奶牛双胎的发生与遗传、产奶量、胎次、受孕年份和季节等因素有关。由于奶牛双胎出现了异性孪生母犊不育、胎衣不下率升高、胎间距延长、流产率和难产率升高、胎儿成活率降低等负面影响。因此，奶牛双胎对奶业生产是不利的。如果能结合性别控制等先进技术，奶牛双胎将有很大的发展前景。 |
| 关 键 词： | 双胎 奶牛 |
| 文章编号： | 1671-5187（2006）03-0138-04 |
| 收稿时间： | 2005-11-21 |
| 修稿时间： | 2005-11-212005-12-06 |
Occurrence and Effects of Twinning on Production in Dairy Cattle |
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| Liu Guangzhen,Chen Hongling,Tang Dongsheng.Occurrence and Effects of Twinning on Production in Dairy Cattle[J].JOURNAL OF DAIRY SCIENCE AND TECHNOLOGY,2006,28(3):138-140,144. | |
| Authors: | Liu Guangzhen Chen Hongling Tang Dongsheng |
| Abstract: | Natural twinning occurs in dairy cattle with double ovulations and fertilizations. The incidence of twinning is considered related to heredity of sire and dam, milk yield and parity of dam, and the year and season of dam's fertility, etc. Because of freemartinism, long generation interval, greater risk of retained placenta, dystocia and fetal loss, twinning is an undesirable trait in dairy herds. Coupling with some new reproductive biotechnologies like sex determination, twinning in dairy cattle will have a good prospect. |
| Keywords: | Dairy cattle twinning |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |