Page 7 - Ruaview 2021
P. 7
Understanding EBV’s
Accuracy
Accuracy below 75% should be considered low, however young bulls with performance data but
no progeny will all have similarly low accuracies.
Birth Weight EBV (kg) is based on the measured birth weight of progeny, adjusted for dam age.
200-Day Growth EBV (kg) is calculated from the weight of progeny taken between 80 and 300
days of age. Values are adjusted to 200 days and for age of dam. This EBV is the best single
400-Day Weight EBV (kg) is calculated from the weight of progeny taken between 301 and 500
600-Day Weight EBV (kg) is calculated from the weight of progeny taken between 501 and 900
Mature Cow Weight EBV (kg) is based on the cow weight when the calf is weighed for weaning,
requirements of the females in the breeding herd. Steer breeders wishing to grow animals out
to a larger weight may also use the Mature Cow Weight EBV.
Milk EBV
of the daughter's milking ability, inherited from the sire, on the 200-day weights of her calves.
For dams, it indicates her milking ability.
Scrotal Size EBV (cm) is calculated from the circumference of the scrotum taken between 300
Carcase Weight EBV
Simmental.
