Economic and biological qualities of black-and-white cows

He actual problem of cattle breeding is the deterioration of the reproductive function in cows with high milk productivity. One of the most important conditions for the development of dairy cattle breeding is the rationally organized reproduction of the herd. This article evaluates the economic and biological qualities of black-and-white cows. For this purpose, the indicators of milk productivity and reproductive qualities of animals for the first and third lactation were studied.