Evaluation of linear traits of Holstein f1 calves through the Select Mating Service (SMS) livestock crossing program

Abstract

The evaluation of the calves obtained through the Select Mating Service (SMS) crossbreeding program was carried out at the Tunshi Experimental Station, different improved phenotypic characters were evaluated through the application of the SMS program, genealogical records, in twelve calves of the mixed Holstein breed . The different variables evaluated were measured in absolute values, on a scale from 1 to 9. The data were analyzed using excel software and descriptive results were obtained; The results showed a mean score for the angularity variable of 5.42 points; fortress 5.25; body depth 5.33 points; rump width 5.17 points; croup angle 5.58 points; rear view legs 6.17; legs side view 6.25 points; foot angle 5.25 points; height 5.50 points. Therefore, it can be said that there is an improvement in the linear characteristics of the calves evaluated, especially in legs that have a low heritability, which allows a longer permanence in the herd with an acceptable productive life and reducing the percentage of discards at age early.