Progress of Biotechnology Breeding in Dairy Cow

Although dairy industry is an important part of the strategy of China's agriculture,the rate of fine breed,milk production,dairy products quality of dairy cattle in china are still at lower level when compared with the developed countries.Faced with the increasing consumption and quality demand,promoting biotechnology breeding of dairy cattle is particularly urgent.In this paper,we summarized the current situation of dairy industry,and some problems in the development of dairy industry in China,then analyzed the necessity and urgency for dairy cattle molecular breeding.We also reviewed the development of dairy cattle biotechnology breeding in both china and abroad,including several respects,such as maker assisted selection,QTL mapping,genome-wide association studies,genomic selection,transgenic research and embryo engineering technology.Finally,we discussed the problems existing in the current dairy cattle breeding,in order to be helpful to the development of dairy industry in China.