Page 8 - Flittie Simmental, Schnabel Simmental & Lazy J Bar Ranch – Feb. 20, 2021 Simmental & Red Angus Bulls

RED ANGUS GUIDE TO EPDS
Sale Information
RedAngus.org
TESTICLE MEASUREMENTS ProS .....Profi tability and Sustainability is an all-purpose index that predicts
average economic differences in all segments in the beef supply chain. This
index is a combination of the breeding objectives modeled in the HerdBuilder
Testicular size is an indicator of puberty in both bulls and females, so and GridMaster selection indexes. In this index, replacement heifers are retained
selecting bulls with larger scrotal circumference measurements will not from within the herd and all remaining progeny are fed out to slaughter and sold
only ensure you of a bull who can service more cows over a given period on a quality-based grid. Traits included in this index include calving ease, growth,
of time, but will also provide you with daughters who will cycle earlier. HPG, STAY, Mature Weight, Dry Matter Intake and carcass traits. The resulting
index is expressed in dollars per head born (Index/High Value).
Recommendations for Scrotal Circumference HB .......HerdBuilder is a maternal selection index that predicts the economic
Months of Age differences of animals for traits that are important from conception through
weaning. Expressed as dollars per head born, HB is calculated based on the
12-14 15-20 21-30 30+ scenario that bulls are mated to heifers and cows, replacement heifers are
Excellent 35 37 39 40 retained and all remaining progeny are marketed at weaning. Traits included
Good 30-35 31-37 32-39 33-40 in the HB index include Calving Ease Direct, Calving Ease Maternal, Weaning
Poor 30 31 32 33 Weight, Milk, Mature Weight, Heifer Pregnancy and Stayability (Index/High
Value).
All measurements are expressed in centimeters.
GM.......GridMaster is a selection index that predicts the average economic
difference of non-replacement calves through the post-weaning phase of
production. GM places selection pressure on growth, feedyard performance and
carcass traits. Expressed as dollars per head born, GM is calculated based on the
GENOMICALLY-ENHANCED EPDS scenario that progeny are fed out to slaughter and marketed on a quality-based
carcass grid. Traits included in GM include Average Daily Gain, Carcass Weight,
Dry Matter Intake, Marbling, Back Fat and Rib Eye Area (Index/High Value).
All the bulls of both breeds have been CED ......Calving Ease Direct predicts differences in the percent of calves born
genetically profi led through Igenity to unassisted out of 2-year-old dams. (Percent/High Value)
enhance the accuracy of their EPDs, verify BW ........Birth Weight predicts differences in actual birth weight of progeny.
parentage and, on the Simmentals, determine polledness and color. (Pounds/Low Value)
WW .......Weaning Weight predicts differences in 205-day weaning weight.
(Pounds/High Value)
YW ........Yearling Weight predicts differences in 365-day yearling weight.
(Pounds/High Value)
ADG .......Average Daily Gain predicts differences in weight gain between 205
and 365 days of age. (Pounds/High Value)
DMI .......Dry Matter Intake predicts differences in daily feed intake as
measured in a feedlot during the post-weaning period. (Pounds/Low Value)
MILK .....Milk predicts differences in weaning weight attributed to the milking
ability of the animal’s daughters. (Pounds/High Value)
ME ........Maintenance Energy predicts the difference in maintence energy
requirements. (Mcal per Month/Low Value)
HPG .......Heifer Pregnancy predicts differences in the percent of daughters who
are able to conceive and calve at 2 years of age following exposure to breeding.
(Percent/High Value)
CEM ......Calving Ease Maternal predicts differences in the percent of daughters
who are able to calve unassisted as 2-year-old heifers. (Percent/High Value)
STAY......Stayability predicts differences in the ability of an animals’ retained
daughters to remain productive in the herd – calve every year – through 6
years of age. (Percent/High Value)
MARB ....Marbling predicts differences in marbling score – amount of
intramuscular fat measured at the 13th rib. (Marbling Score Units/High Value)
YG .........Yield Grade predicts differences in USDA Yield Grade, which is
calculated using CW, REA and Fat. (Yield Grade Units/Low Value)
CW ........Carcass Weight predicts differences in actual hot carcass weight.
(Pounds/High Value)
REA .......Ribeye Area predicts differences in square inches of ribeye area
measured at the 13th rib.(Square Inches/High Value)
FAT ........Fat predicts differences in the depth of backfat measured between the
12th and 13th ribs. (Inches/Low Value)
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