Page 14 - Hingaia Angus Sale Catalogue ebook

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%. The following guide is given for interpreting
accuracy:
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.

Accuracy range Interpretation
EBV should be considered as a preliminary estimate. It could change substantially as more
Less than 50%
performance information becomes available.
Medium accuracy, usually based on the animal’s own records and pedigree. Still subject
50-74% to substantial changes with more information, particularly when the performance of
progeny are analysed.
Medium - high accuracy and includes some progeny information. Becoming a more reliable
75-90%
indicator of the animal’s value as a parent.
High accuracy estimate of the animal’s true breeding value. It is unlikely that the EBV will
More than 90%
change much with the addition of more progeny data.

INDEXES ($)
SELF REPLACING INDEX ($) ANGUSPURE INDEX ($) HEIFER /DAIRY TERMINAL INDEX ($)
+$100 +$104 +$102

14 Hingaia Angus Bull Sale 2021