Page 12 - Dandaleith Angus Sale 2021 ebook

animals in temperament. Docility EBVs are expressed as differences in the 2021 AN GUS EB V
percentage of progeny that will be scored with acceptable temperament (ie.
either “docile” or “restless”). AVER A GES
Accuracy
Accuracy (%) is based on the amount of performance information
available on the animal and its close relatives - particularly the number
of progeny analysed. Accuracy is also based on the heritability of the
trait and the genetic correlations with other recorded traits. Hence Dir Dtrs GL BW 200D 400D 600D MCWt Milk SS
accuracy indicates the “confidence level” of the EBV. The higher the +1.8 +2.1 -4.4 +4.2 +46 +84 +110 +95 +16 +1.9
accuracy value the lower the likelihood of change in the animal’s EBV
as more information is analysed for that animal or its relatives. Even
though an EBV with a low accuracy may change in the future, it is still DC Cwt EMA RIB RUMP RBY IMF SR AP HDT
the best estimate of an animal’s genetic merit for that trait. As more -4.2 +61 +5.4 +0.1 -0.2 +0.4 +1.8 +$100 +$104 +$102
information becomes available, an EBV is just as likely to increase in
value, as it is to decrease.
As a rule, animals should be compared on EBVs regardless of accuracy.
However, where two animals have similar EBVs the one with higher
accuracy could be the safer choice, assuming other factors are equal.
For further information please contact NZ Angus or TACE.

12