As one of five excellent breeds of cattle in China, Nanyang cattle have great value in breed conservation and in breeding.
南阳牛是我国五大黄牛良种之一,有着十分重要的保种和育种价值。
参考来源 - 南阳牛卵泡卵母细胞体外成熟和体外受精的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
By comparison and analysis, the authors consider that these findings can be used for swine breeding and breed conservation.
经过比较分析，作者认为这一结果可用于家猪的育种和保种工作中。
The sanctuary does not breed tigers and is wholly concerned with the conservation and wellbeing of tigers.
老虎保护区并不繁殖老虎，非常关注老虎的保护和福祉。
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.
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；
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