Gill M. Genetic analysis of polygene conditional and polymorphic signs of dairy cattle

Regularity of realization of the genetic potential in dairy cows production was determined depending on generation, age, inherited and paratypical factors, the types of inheritance of polygenic signs, dependence of additive, maternal and heterosis effects were determined which depend from the actions of genes, their expression and penetrance. It was established by the ecological-genetic analyses the effect of additive action of genes in the control of the signs of selection of dairy cattle, the plasticity and stability of these genetic systems and effect of their interaction with paratypical factors. It was established the type of gene action, which form the productive characteristics in dairy cows by the diallel analyses. The new system of evaluation of the quantities signs of cows was proposed on the basis of the entropy-informational analysis.