Influence of bulls on the reproduction indicators of daughters taking into account their productivity

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.