The correlated trends of the selected traits vary, as for their value, with the applying of various selection programs, and can readily be used as tests in choosing the optimum selection model. Positive and highly significant correlations were obtained between the cows' genotype eva- luation model developed by selection index approach involving heritabilities, phenotypic standard deviation, phenotypic and genetic correlations, economic value, and the individual selection traits.
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Carving difficulties and perinatal death in daughter groups of bulls of the mry breed
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