Page 5 - Riverlee 2020 v2

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

RIVERLEE HEREFORD BULL SALE - 3