The main objective of the development of dairy cattle breeding is to increase

the breeding productive characteristics, taking into account the preservation of the

reproductive qualities of animals. The research was conducted on the basis of data

from the breeding plant for black-and-white cattle breeding OOO “Zazerkalie” in the

Vologda region. Bulls-improvers were determined by the complex of selected traits,

taking into account the linear affiliation: Meson 3097402441; Retirement 11720463 of

the line of the R. Sovering (1st lactation of daughters). It is recommended to use the

best breeding material (seed of breeding bulls, breeding young), which allows the next

generation to get a reliable improving effect on the selected characteristics.