Linear type trait analysis in Coldblood breeds: Czech-Moravian Belgian horse and Silesian Noriker

Abstract

The linear type description in 580 horses of Czech-Moravian Belgian horse (CMB) and in 282 horses of Silesian Noriker (SN) was evaluated using a linear model with fixed effects: sex, year of birth, sire line and sire. Both breeds were evaluated separately. Basic traits of the linear type description such as the mean, variation coefficient and the number of utilized score were determined. In this work, an incomplete use of the variability scale has been ascertained for the linear type trait description of exterior in the genetic sources in CMB and SN horses. None of the monitored traits has used a complete scale of developmental stages (1-9). Statistical differences between the sexes have been found only for 4 traits in CMB horses and for 5 traits in SN horses. No statistically significant differences in age during the evaluation were found in most cases. Both effects (sex and age with evaluation) have not been significant for the majority of linear type traits in both files of statistical significance and were not significant in breeding and selection of CMB and SN on the basis of linear type trait analysis. On the contrary, statistically significant differences in the effect of the year of birth have been found for 14 traits in CMB and for 16 traits in SN. The year of birth shows statistically significant influence on the formation of morphology in both breeds. In fathers and paternal lines in CMB and SN, significant intra-population phenotype variability has been ascertained.