Page 35 - Twedt Red Angus Annual Production Sale – Feb. 2, 2021 Bulls, Heifers

Commercial
RED ANGUS GUIDE TO EPDS Commercial HeifersHeifers

HB – HerdBuilder is a maternally focused selection index MILK – Milk predicts differences in weaning weight attributed
that predicts the probablity of developing prow table to the milking ability of the animal’s daughters.
cowherd traits while maximizing the value of marketed (Pounds/High Value)
progeny. Expressed as dollars per cow exposure, HB is
calculated based on the scenario that bulls are mated HPG – Heifer Pregnancy predicts differences in the percent
to heifers and cows, replacement heifers are retained, of daughters who are able to conceive and calve at 2
and all remaining progeny are marketed on a quality- years of age following exposure to breeding.
based carcass grid. (Index/High Value) (Percent/High Value)

GM – GridMaster is a terminally focused selection index CEM – Calving Ease Maternal predicts differences in the
that predicts the probablity to increase the value of percent of daughters who are able to calve unassisted
marketed calves. GM places selection pressure on as 2-year-old heifers. (Percent/High Value)
growth, feedyard performance and carcass quality, STAY – Stayability predicts differences in the ability of an
predicting differences in prow t as expressed per cow animals’ retained daughters to remain productive in
exposure. GM is calculated based on the scenario the herd – calve every year – through 6 years of age.
that bulls are mated to cows only, and all progeny are (Percent/High Value)
marketed on a quality-based carcass grid.
(Index/High Value) MARB – Marbling predicts differences in marbling score –
amount of intramuscular fat measured at the 13th rib.
CED – Calving Ease Direct predicts differences in the percent (Marbling Score Units/High Value)
of calves born unassisted out of 2-year-old dams.
(Percent/High Value) YG – Yield Grade predicts differences in USDA Yield Grade,
which is calculated using CW, REA and Fat.
BW – Birth Weight predicts differences in actual birth weight (Yield Grade Units/Low Value)
of progeny. (Pounds/Low Value)
CW – Carcass Weight predicts differences in actual hot
WW – Weaning Weight predicts differences in 205-day carcass weight. (Pounds/High Value)
weaning weight. (Pounds/High Value)
REA – Ribeye Area predicts differences in square inches of
YW – Yearling Weight predicts differences in 365-day ribeye area measured at the 13th rib.
yearling weight. (Pounds/High Value) (Square Inches/High Value)
ADG – Average Daily Gain predicts differences in weight gain FAT – Fat predicts differences in the depth of backfat
between 205 and 365 days of age. measured between the 12th and 13th ribs.
(Pounds/High Value) (Inches/Low Value)
DMI – Dry Matter Intake predicts differences in daily feed
intake as measured in a feedlot during the post-
weaning period. (Pounds/Low Value)

For more information, visit RedAngus.org.

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