Page 9 - Waiterenui Angus Sale 2021 ebook

OBJECTIVE

The Index values are derived using BreedObject technology. More ACCURACY
information is available from the BreedObject web site.
ACCURACY (%) is based on the amount of performance information
SELF-REPLACING INDEX ($) - Estimates genetic differences available on the animal and its close relatives - particularly
between animals in net profitability per cow joined for a self- the number of progeny analysed. Accuracy is also based on the
replacing commercial herd, targeting the production of grass finished heritability of the trait and the genetic correlations with other
steers. Steers are assumed marketed at 525 kg live weight (280 kg recorded traits. Hence accuracy indicates the “confidence level” of
carcase weight and 10 mm fat depth) at 16 months of age. the EBV. The higher the accuracy value the lower the likelihood of
ANGUSPURE INDEX ($) – Estimates genetic differences between change in the animal’s EBV as more information is analysed for that
animals in net profitability per cow joined for a self-replacing animal or its relatives. Even though an EBV with a low accuracy
commercial Angus herd, targeting the production of grass finished may change in the future, it is still the best estimate of an animal’s
steers for the AngusPure programme. Steers are assumed marketed genetic merit for that trait. As more information becomes available,
at 525 kg live weight (280 kg carcase weight and 10 mm fat depth) an EBV is just as likely to increase in value, as it is to decrease.
at 18 months of age with a significant premium paid for marbling. Accuracy values range from 0-99%.
HEIFER/DAIRY TERMINAL INDEX ($) – Estimates the genetic As a rule, animals should be compared on EBVs regardless of
differences between animals in net profitability per female joined accuracy. However, where two animals have similar EBVs the one
in an example herd where all progeny are marketed. All progeny with higher accuracy could be the safer choice, assuming other
are marketed at approximately 510 kg live weight (280 kg carcase factors are equal.
weight and 7 mm fat depth) at approximately 24 months of age.
For further information please contact NZ Angus or TACE.
Note that $Index values for individual animals are sensitive to
the assumptions used in the BreedObject analysis to calculate the
selection index. More information is available on the weightings
used in the New Zealand Angus Selection Indexes.

W aiterenui Angus | 2 year old Bull Sale 20 2 1 | P age 7