农业科学
bull
Conclusion When estimating the breeding values of bull’s fertility, these fixed effects should be rejected beforehand or in the model.
结论估计公牛繁殖性能的育种值时,应事先或模型中加以剔除这些固定效应。
生物学
bull
This research provided the foundation for preservation of genetic resource of superiority bull, production of bovine cheap test-tube embryo and study of transgenic bovine. The results as following shown :1.
并为优秀公牛遗传资源的保存,试管牛和廉价胚胎生产以及转基因牛的研究打下基础。
ox
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