Shelton M
J Dairy Sci. 1978 Jul;61(7):994-1010. doi: 10.3168/jds.S0022-0302(78)83680-7.
Reproduction and genetics of the goat are reviewed with a view of increasing their contribution to mankind. The goat contributes most in tropical regions (within 30 degrees of the equator). The most important product from the goat is milk with meat a close second. Other products are minor. Reproductive rate is a problem only with the Angora goat, but increased reproduction with any type of goat would contribute to improved efficiency. Also, a knowledge of the reproductive phenomenon is necessary for effective management. Genetic studies of goats are limited, but this should not limit improvement programs. Excellent genotypes for producing milk and fiber are available, but adaptation to tropical conditions is needed. Even within temperature regions, there is little evidence of progress in breeding for milk production. Little has been done on the development of the goat as a meat animal. Also, research on crossbreeding for milk or meat production is limited.
为了提高山羊对人类的贡献,本文对山羊的繁殖和遗传学进行了综述。山羊在热带地区(赤道30度以内)贡献最大。山羊最重要的产品是奶,肉次之。其他产品则不太重要。繁殖率只是安哥拉山羊存在的一个问题,但提高任何类型山羊的繁殖率都有助于提高效率。此外,了解繁殖现象对于有效管理是必要的。对山羊的遗传学研究有限,但这不应限制改良计划。有优良的产奶和产纤维基因型,但需要适应热带条件。即使在温带地区,也几乎没有证据表明在产奶育种方面取得了进展。在将山羊培育成肉用动物方面几乎没有开展什么工作。此外,关于奶用或肉用杂交育种的研究也很有限。