摘要
根据生长发育和后裔性能测定选择18月龄后备种牛是渤海黑牛选择的重点。根据渤海黑牛品种特性特征及选育实际,采用以体重和体质外貌为主要选育性状的综合指数选择18月龄后备种牛及其后裔测验,是适应役用型向肉役型转变的选种方法。
It was important to select replacement bulls of 18—month—old based on their growth and development and progeny testing in Bo—Hai Black Cattle. On the basis of the characteristics of Bo—Hai Black Cattle and its breeding practice, the selection index that incorporated body weight, conformation traits and progeny tesing performance as main selection characters for the selection of 18—month—old replacement bulls was the suitable selection method for the transformation of draft type to beef—draft type of Bo—Hai Black Cattle.
出处
《黄牛杂志》
1992年第3期6-8,共3页
Journal of Yellow Cattle Science
关键词
体重
体质外貌
牛
渤海黑牛
选种
: Body Weight,Conformation trait, Selection Index