Progress in biotechnology of small ruminants in China

文献类型： 外文期刊

第一作者： Zhu, YD

作者： Zhu, YD;Guo, Y;Ni, HM

作者机构：

关键词： sheep;goats;antler deer;biotechnology

期刊名称：SMALL RUMINANT RESEARCH （ 影响因子：1.611； 五年影响因子：1.813 ）

ISSN： 0921-4488

年卷期： 1999 年 34 卷 3 期

页码：

收录情况： SCI

摘要： According to FAO, China has a population of 133 million sheep, 171 million goats and 300 thousand antler deer. The population of goats is the largest in the world and of sheep the second largest. The total production of mutton is 2.4 million ton, which represents only 4.1% of the total meat production of 59.2 million ton in China. The most important strategy of China is to improve the breeding of sheep and goats, and increase their meat output by utilizing forage and grassland resources efficiently. Acid produce enough protein food for the increasing population through the use of new biotechnology. Research in biotechnology of small ruminants did not begin in China until 1970, but there has been much progress in recent years. The techniques of ovine and caprine embryo transfer, embryo freezing, embryo splitting, sex determination, in vitro, and caprine nuclear transfer has all been successful. The application of artificial insemination in antler deer has just begun and in 1996, investigations in embryo transfer have also begun. From 1995 to 1996, the rate of increase of ovine and caprine was 4.3% and 14.1%, respectively, and biotechnology of sheep and goats will be applied more widely. Research has been conducted on transgenic animals, improvement of breeding and enhancing their productivity through biotechnology. Native sheep and goat breeds will be protected because of the value of their polymorphisms. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

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