介绍了冷冻精液、胚胎移植、胚胎冷冻、胚胎分割、体外受精、核移植克隆、基因导入等技术。这些技术的应用使养羊业育种和生产水平大为提高，产生了显著的经济效益。同时，为养羊业科研和生产开辟了新的途径。

In the article, the application of biological technique in the scientific research of sheep husbandry is introduced. It involves frozen semen, embryo transfer, embryo freezing preservation, embryo splitting, in vitro fertilization, nuclear transfer and cloned embryo, gene transfer and so on. The application of biological technique not only improves the level of sheep breeding and production, but also brings about obvious economical results. Meanwhile, new ways and channels are opened up for scientific research and production in sheep husbandry by the development and maturation of biological technique.