Page 8 - Elgin Angus 2021 Catalogue eBook

standard 400 kg carcase. These EBVs are indicators of the genetic differences in fat distribution on a standard 400 kg
carcase. Sires with low, or negative, fat EBVs are expected to produce leaner progeny at any particular carcase weight
than will sires with higher EBVs.
Retail Beef Yield EBV (%) indicates genetic differences between animals for retail yield percentage in a standard
400 kg carcase. Sires with larger EBVs are expected to produce progeny with higher yielding carcases.
Intramuscular Fat EBV (%) is an estimate of the genetic difference in the percentage of intramuscular fat at the
12/13th rib site in a 400 kg carcase. Depending on market targets, larger more positive values are generally more
favourable.
Docility EBV (%) is an estimate of the genetic differences between animals in temperament. Docility EBVs are ex-
pressed as differences in the percentage of progeny that will be scored with acceptable temperament (ie. either “docile”
or “restless”).
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 accuracy indicates the “confidence level” of the EBV. The higher the
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 the best estimate of an animal’s
genetic merit for that trait. As more information becomes available, an EBV is just as likely to increase in value, as it is to
decrease.
For further information please contact NZ Angus or TACE.

2021 TransTasman Angus Cattle Evaluation EBVs Averages

Dir Dtrs Gest BWt 200 400 600 MWt Milk
+1.8 +2.1 -4.4 +4.2 +46 +84 +110 +95 +16
SS DC CWt EMA Rib Rump RBY IMF
+1.9 -4.2 +61 +5.4 +0.1 -0.2 +0.4 +1.8

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