Page 5 - Riverlee 2020 v2
P. 5

EBV’S EXPLAINED CONT.


       earlier maturity. Two fat EBVs are listed as   INDEXES: The Indexes are derived by
       there is variation between animals regarding fat  acknowledging the relative importance
       depth at the two sites.              (weightings) of EBV’s across the 16 EBV’s
                                            produced by A.B.R.I. They are derived in
       INTRAMUSCULAR FAT - Intramusclar Fat
                                            relation to Market returns, less the cost of
       (IMF) EBVs are estimates of generic difference
                                            production, with all indexes expressed in dollar
       between animals in intramuscular fat (marbling)
                                            terms. The two indexes relevant to this sale
       at the 12/13 rib site in a 300kg carcase. Larger,
                                            are:
       more positive, IMF EBVs are generally more
       favourable.                          THE EXPORT INDEX - which focuses on the
                                            production of a 300kg Carcase Weight Steer by
       ACCURACY: An accuracy is presented with
                                            age 20 months from a self replacing cow herd.
       each EBV and gives an indication of the
       amount of information that has been used in   THE HEREFORD PRIME INDEX - focuses on
       the calculation of that EBV. The higher the   producing a Steer up to 275 kgs by 18 months,
       accuracy, the less the animals EBV is likely to   suitable for local trade, from a self replacing
       change as more information is analysed for that  cow herd.
       animal or its relatives. Accuracy below 75%
       should be considered low.










         2020 HEREFORD GROUP BREEDPLAN AVERAGE EBVs FOR 2018 BORN CALVES
               DIR    DTRS    GL     BW     200D   400D    600D   MWT     Milk
        EBVs   +1.6   +1.6   -0.5    +4.3   +33     +55    +78    +68     +16
                SS    DTC    CWT     EMA     RIB   RUMP    RBY     IMF
        EBVs   +2.0   -2.8    +51    +3.4   +0.6   +0.7    +0.8   +0.5

                                2020 HEREFORD INDEXES
                          Hereford    Export  Dairy  Terminal
                           Prime
                          +$105     +$106    +$97     +$64





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