Prediction of performances through various muzzle measurements in Friesian crosses

Abstract

The production, reproduction and production efficiency performances of Friesian crosses was predicted by muzzle measurement technique. Various linear muzzle measurements (basal length" upper length, central length, muzzle span, . muzzle length and muzzle area) were taken. There was a significantly high association oflinear muzzle measurements with various important production, reproduction and production efficiency traits under study. The simple/multiple regression equation of the best R2 value (more than 75%) along with exclusion of multicollinearly related independent variables were developed for total lactational yield in fourth lactation (kg), average oflactation yield up to 4 lactations (kg), average lactation length up to 4 lactations (days), fourth dry period (days), milk yield per day of fourth lactation (kg/day), milk yield per day of fourth calving interval (kg/day) and average milk yield per day of average of 4 calving intervals (kg/day) having R2 value 82.79,90.81,91.02,82.73,99.91,99.47, 99.55% respectively.