Page 9 - Waigroup Pinebank Pinehill Angus 2021 Catalogue ebook
P. 9

TACE – what is it?

      Tace is simply a performance predicting system. It
      records an animal’s own performance, as well as the
      performance of all known relatives in the herd. Using
      this information, it is able to build a reliable indicator
      of each animal’s genetic potential.
      Each recorded trait is measured as a plus or minus.
      This shows the genetic potential in that trait, for that
      bull,  as  compared  to  the  breed  average.    These
      measurements are called EBV’s – Estimated Breeding

      Each recorded trait is also presented with an accuracy
      percentage. This measures the degree of predictability
      ie the likelihood of passing on that recorded trait to his
      progeny. The more information we can collect for each
      animal, the more reliable the predictability of each trait,
      and the higher the percentage. For example, a bull with
      + 60 kg growth at 400 days and 90% accuracy, can
      be more confidently expected to transmit that  extra
      growth to his progeny than a bull with + 60 kg at 400
      days and 57 % accuracy.

      This doesn’t mean the bull with lower predictability is
      not going to pass on that trait, it just means there is
      less information on his ability to pass it on . There may
      be a number of reasons for this – for example, a young
      bull may have few closely related animals.

      As  a  general  rule,  pick  using  EBV’s  first,  and  use
      accuracy percentages, as well as visual appraisal, to
      narrow down your selection.

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