A discriminant function for qualification of zebu semen samples before freezing

Abstract

A discriminant function is presented for the selection of semen ejaculates from Zebu bulls before dilution and freezing. The estimated function was L= 100+ + 0.248 X₁ - 0.237 X₂ - 0.142 X_3, where X₁ is the percent initial motility, X₂ the proportion of primary abnormalities, and X₃ the proportion of secondary abnormalities, these variables being previously submitted to an arc-sin transformation. The above function was tested in terms of the probability of misclassification of any ejaculate and is considered suitable for practical use.