... cordon training 矮干形整枝 core group 核心群 core transplantation of silkworm 蚕核移植 ...
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新疆细毛羊超排胚胎移植核心群育种方案的确定_养殖信息_养殖技术网 关键词 新疆细毛羊 MOET 核心群 育种[gap=923]Key words Xinjiang fine wool sheep; MOET; nucleus flock; breeding
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The ONBS of Qinchuan beef cattle consists of three herds of animals in a pyramid-like structure, the nucleus herd on the top, the breeding herd in the middle and the improved herd at the bottom.
秦川肉牛开放核心群育种体系共分三个层次:核心群、育种群和改良群,是一个呈等级的金字塔型结构,顶部为核心群,中部是育种群,基部是改良群。
参考来源 - 秦川肉牛群选群育开放核心群育种体系的建立及技术体系优化研究·2,447,543篇论文数据，部分数据来源于NoteExpress
一个400头母猪的核心群因此每年需要采用最少54头公猪！
A 400 sow nucleus herd therefore needs to use a minimum of 54 boars per year!
河曲马品种的保种与选育，应采取划定保护区，建立育种核心群，确定群体有效含量，控制近交，调整马群结构和合适的公母比例等措施；
Some technical measures were used in the breed control of Hequ horse, such matters as defining conservation region, determining effective population size and having a right foundation herd etc.
普拉文·莫曼奈尼博士说：“如果你的核心肌群比较虚弱，那么仅仅坐直是不够的。”
"It's not enough to just sit up straight if your core muscles are weak," said Dr. Praveen Mummaneni.
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