Page 10 - Brackenfield 2020
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information is available from the BreedObject web site.
      Self-Replacing Index ($) - Estimates genetic differences between
      animals in net profitability per cow joined for a self-replacing
      commercial herd, targeting the production of grass finished steers.
      Steers are assumed marketed at 525 kg live weight (280 kg carcase
      weight and 10 mm fat depth) at 16 months of age.
      AngusPure Index ($) –  Estimates  genetic  differences  between
      animals in net profitability per cow joined for a self-replacing
      commercial Angus herd, targeting the production of grass finished
      steers for the AngusPure programme. Steers are assumed marketed
      at 525 kg live weight (280 kg carcase weight and 10 mm fat depth)
      at 18 months of age with a significant premium paid for marbling.
      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.
      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 BREEDPLAN.


           2020 TACE EBV AVERAGES
            FOR 2018 BORN CALVES



            DIR  DTRS  GL   BW   200  400  600  MatW
            +1.7  +1.9  -4.3  +4.2  +46  +83  +109  +95
      MILK   SS  DtC  Car Wt EMA  RIB  RUMP  RBY  IMF
       +16  +1.9  -4.4  +60  +5.3  +0.0  -0.2  +0.4  +1.8

                Indexes          SR  +$114  AP  +$134


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