高产奶牛核心群的建立

The Establishment of Core Group of High-yielding dairy

中文关键词: 南方模式  奶牛  核心群

英文关键词: the Southern mode  Dairy  Core group  

中文摘要:

      本文通过选种、选配两个方面,同时又结合南方奶牛生产实践,系统的分析了高产奶牛生产模式,从中得出建立核心群的南方模式--年龄(胎次)结构:成母牛66%,后备牛34%.遗传结构:核心群占30%,生产群占60%,淘汰群占10%.

英文摘要:

      The Southern mode of dairy core group was established based on systematically analyzing the mode of high yielding dairy production by selecting and breeding,while combining the practice of the southern dairy production.The mode included the age(parity) structure which the proportion of adult cows and heifers were 66% and 34% and genetic structure which the proportion was 30%,60%,10% in core group,production group and elimination group,respectively.