Application of correlation and regression analysis in the selection of black-and-white cows

The use of the method correlation-regression analysis as most widespread statistical processing experimental data makes it possible to organize selection animals according leading characteristics productivity. A positive and high correlation was established between milk yield in all groups studied (r = from 0.64 0.90), 305 days lactation highest daily - only Reflection Sovering Montvik Chieftain cows. 0.65 0.92). Cows Vis Back Aydial line have higher coefficients indicators composition 0.72 0.91, depending on trait). calculation regression showed that with an increase coefficient constancy lactation, production indicator per unit, amount for increased by average 1.63 221.04 kg.