Abstract: With the development of social economy and the improvement of people's living standards,the demand for milk is increasing.Therefore, improving the lactation rate of cows can not only improve the milk production,but also provide more milk,reduce the production cost of cattle farms and improve the economic efficiency.In this paper,daily monitoring of lactation efficiency of dairy farms in Mei County was conducted,and standard feeding methods were applied to improve lactation efficiency of cows, reduce feed costs,and improve economic value.

Key words: Mei Xian County, Shaanxi Province, milk production, the efficiency of lactation