Abstract:The technology of simultaneous estrus and timed fertilization can not only solve the problems of difficult identification of estrus and low breeding rate in production practice, but also significantly improve production efficiency，which is conducive to promoting the industrialization of improved beef cattle breeds and improving economic benefits. In order to solve the problems of slow breed improvement, scattered calving time, difficult management and long calving interval in Altai area, Ovsynch was adopted to promote the application effect of simultaneous estrus and timing sperm delivery technology in Altai City, Fuhai County, Fuyun County and Qinghe County. The results showed that the technology of simultaneous estrus-timing fertilization could save cost and increase efficiency, effectively improve the impregnation rate of cows, and was of great significance to improve the economic and social benefits of beef cattle breeding.
