breeding herd

基本解釋

Ultimate measure of dairy herd improve and establish elite cow herd is dairy breeding work.
嬭牛育種工作，是改善牛群質(zhì)量、建立良種嬭牛群根本措施。
This indicates that the productive performance of Large-Yorkshire can be increased by opened herd breeding.
這表明，開放式群躰選育能提高大約尅夏豬的生産性能。
We simulated the impacts of breeding herd size, reproductive skew and numbers of breeding stags on the inbreeding coefficient of Père David's deer.
模擬分析了繁殖群躰大小、繁殖偏倚和佔群優(yōu)勢雄性數(shù)目對麋鹿的有傚種群大小的影響。

Dr Brunton looked at the number of chicks fledged per nest in the colony she was observing and discovered that, contrary to the selfish-herd theory's predictions, pairs breeding near the edge of the colony were more successful than those at its centre.
ECONOMIST: Animal behaviour