Genetiese parameters van speenkalfeienskappe by Herefordkalwers (Short communication)

Genetic parameters of weaning traits of Hereford calves.

The inheritance and interassociation of weaning traits for 912 Hereford calves, the progeny of 22 sires, collected over a period of 11 years, were studied. The estimates of heritability of the weaning traits were as follows: 0,36 ± 0,12 for birthmass; 0,21 ± 0,10 for 1DO-daymass; 0,27 ± 0,09 for weaning mass; 0,25 ± 0,08 for increase in mass to 100 days; 0,23 ± 0,11 for increase in mass (ADG) to weaning. Most of the genetic, phenotypic and environmental correlations between the traits studied were statistically significant.