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Dairy products are the main food elements of the man. Milk is the sole food  for infants and it plays an important role in feeding of the sick,  convalescent, and healthy adults. The Yaroslavl Region is a leading region of  the Yaroslavl cattle breed. Therefore, the aim of our research was to  determine the strength and reliability of the influence of the factor  «genetic value of the sire» on productive characteristics of animals as a  factor that helps to increase the productivity of animals. When we determine  the strength of the influence of factors for statistical data we used the  procedure of generalized linear models (General Linear Models - GLM), and  evaluation components of phenotypic variation attributes were analyzed by  multivariate dispersive analysis. Our research has allowed to allocate bulls  with genetic value which has the improving effect. Using the recommended  lines the farmers of the Yaroslavl region may increase productive  characteristics of animals and the profit of the farms and improve the  efficiency of breeding.

biotechnology in animal husbandry/biotechnology in animal husbandry

The influence of the factor "genetic value of the sire" on the implementation of the genetic potential of the indicator "milk production of maximum lactation" of the Yaroslavl breed cows