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CCR Diamondback Y105
CALVED: 6-7-11 • AAA: 17156315 • TATTOO: Y105
OWNER/S: Cripple Creek Ranch, Guthrie, OK
3392
ADG WDA Adj. YW Adj. YH Act. SC Adj. %IMF Adj. REA Adj. Fat
3.89 3.41 1273 N/A 37.0 NA NA NA
OBI Test No. No. In Test On-Test Wt. Off-Test Wt. OBI Test Index
113 2 764 1200 98.8
Trait CED BW WW YW Milk CW Marb REA Fat
EPD +9 +0.6 +34 +61 +22 +8 +.38 +.21 –.010
$Value $Wean $Feedlot $Grid $Beef
Index +27.26 +7.25 +30.17 +46.37
#+VDAR Lucys Boy
• BW 72
RFI
ADG
TEND
MARB
FAT
REA
HP
MCE
DOC
+Leachman Diamondback
+GB New Design 214
#Connealy Frontline
J&J Diamondback 427 Leachman Blackbird 5016
#Bon View New Design 1407
+OSU 6079 Racquel 8176
+Birks Lucy Boy 169
Dutchess 151 DE
Double E Blackbird 335 B&M Forever Lady 294
BMA Focus 908
Lady Blackbird 29 DE
12 Oklahoma Beef, Inc. • Thursday, March 28, 2013
ANGUS • CARCASS EPDs & $VALUES • TEST NO. 113
$VALUE INDEXES
$Value indexes are multi-trait selection indexes to assist beef producers by
adding simplicity to genetic selection decisions. $Values are reported in dol-
lars per head, where a higher value is more favorable. The $Value is an es-
timate of how future progeny of each sire are expected to perform, on aver-
age, compared to progeny of other sires in the database if the sires were ran-
domly mated to cows and if calves were exposed to the same environment.
Weaned Calf Value ($Wean), an index value expressed in dollars per head,
is the expected average difference in future progeny performance for pre-
weaning merit. $W includes both revenue and cost adjustments associated
with differences in birth weight, weaning direct growth, maternal milk and
mature cow size.
Feedlot Value ($Feedlot), an index value expressed in dollars per head, is
the expected average difference in future progeny performance for post-
weaning merit compared to progeny of other sires.
Grid Value ($Grid), an index value expressed in dollars per head, is the ex-
pected average difference in future progeny performance for carcass grid
merit compared to progeny of other sires.
Beef Value ($Beef), an index value expressed in dollars per head, is the ex-
pected average difference in future progeny performance for postweaning
and carcass value compared to progeny of other sires.
Table 2. Breed Average $Value Indexes for non-parent bulls evaluated
Average
Weaned Calf Value +26.69
Feedlot Value +26.79
Grid +25.58
Beef Value +55.27
This catalog includes Angus carcass EPDs by the American Angus Associa-
tion. As you consider these values as a selection tool, please remember that
a successful breeding program is based on good multiple-trait selection.
Consider your cow herd and its needs as you use EPDs to manage the genet-
ics of your operation. A description of the carcass EPDs provided for Angus
bulls is given below. This information has been adapted from the Spring 2013
AAA Sire Evaluation Report.
The objectives of carcass and ultrasound evaluation programs are to give
breeders the EPDs necessary to select for directional change in body compo-
sition (percent retail product) and/or Quality Grade (marbling) in future prog-
eny. Table 1 presents the Angus breed average carcass EPDs for non-parent
bulls evaluated for the Spring 2013 Sire Evaluation.
Carcass EPDs are calculated from an integrated analysis of the Angus Herd Im-
provement Records (AHIR ®) carcass and ultrasound phenotypic databases.
The genetic evaluation produces a single set of EPDs for carcass weight, mar-
bling score, ribeye area and fat thickness. The units of measure are in carcass
trait format and analyzed on an age-constant basis.
Recommendations on the use of each carcass EPD follows:
Carcass Weight EPD (CW)
Carcass weight is a good predictor of total retail product. In general, carcass
weight is not a good predictor of percent retail product. Selecting sires with
the higher EPD for carcass weight will result in progeny carcasses that pro-
duce more total retail product at constant fat and age end points. An industry
target weight range for carcasses would be between 650 and 850 pounds. As
with any trait, you need to be cautious of selecting for extremes unless these
are necessary for your program.
Marbling Score EPD (Marb)
The marbling score EPD can be used to select sires that will produce progeny
with more marbling at a constant fat and age end point. The higher the mar-
bling score EPD, the higher the amount of intramuscular fat in the ribeye. It
should be noted that the genetic correlation between marbling score and ex-
ternal backfat at the 12th rib is nearly zero. This means that breeders can se-
lect for increased marbling and not have to worry about selecting for increased
external fat when taking animals to an age-constant end point.
Ribeye Area EPD (REA)
Cross-sectional area of the longissimus dorsi muscle (ribeye area) at the 12th
rib has been shown to account for a significant amount of variation in percent
retail product at a constant carcass weight end point. This means that given
two sires with the same carcass weight EPD, the sire with the higher EPD for
ribeye area will have progeny that yield higher percentages of retail product.
Do not use the ratio of ribeye area EPD to carcass weight EPD as a selection
index nor as an indicator of differences in percent retail product or muscling.
Fat Thickness EPD (Fat)
The 12th rib fat thickness heritability has been estimated to be .25 from the
Angus carcass data base.
Table 1. Breed Average Carcass EPDs for non-parent bulls evaluated
Average
Carcass Weight, lbs. +25.00
Marbling Score + .44
Ribeye Area, sq. in. + .37
Fat Thickness, in. + .009
Please note that EPDs were current as of 2-28-13 but may change as informa-
tion is updated.
ANGUS PEDIGREE NOTATIONS: Pathfinder animals are indicated by the pound
(#) sign preceding the name or registration number. Embryo transplants are indicated
by the plus (+) sign preceding the name or registration number. Cell clones are in-
dicated by the caret (^) symbol preceding the name or registration number.
Bulls selling that are potential carriers of known Angus genetic defects have been
tested. Results not available at catalog press time will be furnished at the sale.