Dairy herd improvement 奶牛牛群改良 ; 生产性能测定 ; 是奶牛生产性能测定
Dairy Herd Management 乳制牧业管理
Dairy Herd Improvement Association 乳业改进协会 ; 乳牛改良协会
dairy herd improvement program 奶牛群改进项目
India has the world's largest dairy herd.
印度拥有世界上最大的奶牛群。
Ultimate measure of dairy herd improve and establish elite cow herd is dairy breeding work.
奶牛育种工作,是改善牛群质量、建立良种奶牛群根本措施。
Being worked out herd early selection plan is one of the most important tasks to dairy herd breeding .
从不同角度分别对成母牛群和后备牛群早期选种方案的制定方法、实施原则和步骤进行了探讨。
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