Page 8 - Delmont Angus Catalogue ebook

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 expressed 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.
Accuracy values range from 0-99%.
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.

2021 BREED AVERAGE EBV’S
FOR 2019 BORN CALVES

Calving Calving Gesta- Birth Scrotal
Ease Ease tion Weight Milk Size
DIR DTRS Length

+1.8 +2.1 -4.4 +4.2 +16 +1.9

200 400 600 Mat Days to Carcase
Day Day Day Cow
Weight Weight Weight Weight Calving Weight
+46 +84 +110 +95 -4.2 +61

Eye
Retail
Muscle Rib Fat Rump Fat Beef Yield IMF%
Area
+5.4 +0.1 -0.2 +0.4 +1.8

Self Replacing AngusPure Heifer / Dairy
Index Index Terminal Index

+$100 +$103 +$102

6