55
.
.
Notes:
More on
Selection Indices:
You will have noticed that we have added two new
numbers in the catalog-- HB (HerdBuilder) and GM
(GridMaster). These are selection indices, developed
to take several factors of economic importance into ac-
count and reflect those factors as a measure of prof-
itability. In the develpment of indices, scenarios must
be used. Below are the scenarios for HB and GM.
HerdBuilder Index
As the name indicates, implementation of the Herd-
Builder Index will assist producers in building prof-
itable herds. The HerdBuilder Index is built using the
following production scenario:
• Red Angus bulls mated to cows and heifers
• Replacement heifers retained from within the herd
• All remaining progeny sold on a quality-based car-
cass grid.
Factors included:
EPDs of Stayability, Heifer Preg-
nancy, Calving Ease, Marbling, Yield Grade and
growth.
GridMaster Index
While Red Angus has traditionally been known as a
superior maternal breed, those who have retained own-
ership in Red Angus calves know of their potential to
excel in the feedyard and ultimately hang a premium
carcass. The GridMaster Index is built using the fol-
lowing production scenario:
• Red Angus bulls mated to cows
• All progeny sold on a quality-based carcass grid.
Factors included:
EPDs of Marbling, Yield Grade
and growth
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