Page 8 - Flittie, Schnabel & Lazy J Bar Ranch Bull Sale – Feb. 15, 2025

Simmental Bullsale Information
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TESTICLE MEASUREMENTS RED ANGUS GUIDE TO EPDS

Testicular size is an indicator of puberty in both bulls and females, so RedAngus.org
selecting bulls with larger scrotal circumference measurements will
not only ensure you of a bull who can service more cows over a given ProS .....Profi tability and Sustainability is an all-purpose index that predicts
average economic differences in all segments in the beef supply chain. This
period of time, but will also provide you with daughters who will cycle index is a combination of the breeding objectives modeled in the HerdBuilder
earlier. and GridMaster selection indexes. In this index, replacement heifers are retained
from within the herd and all remaining progeny are fed out to slaughter and sold
Recommendations for Scrotal Circumference on a quality-based grid. Traits included in this index include calving ease, growth,
HPG, STAY, Mature Weight, Dry Matter Intake and carcass traits. The resulting
Months of Age index is expressed in dollars per head born (Index/High Value).
12-14 15-20 21-30 30+ HB .......HerdBuilder is a maternal selection index that predicts the economic
Excellent 35 37 39 40 differences of animals for traits that are important from conception through
weaning. Expressed as dollars per head born, HB is calculated based on the
Good 30-35 31-37 32-39 33-40 scenario that bulls are mated to heifers and cows, replacement heifers are
Poor 30 31 32 33 retained and all remaining progeny are marketed at weaning. Traits included
All measurements are expressed in centimeters. in the HB index include Calving Ease Direct, Calving Ease Maternal, Weaning
Weight, Milk, Mature Weight, Heifer Pregnancy and Stayability (Index/High
Value).
GENOMICALLY ENHANCED EPDS GM.......GridMaster is a selection index that predicts the average economic
difference of non-replacement calves through the post-weaning phase of
All the bulls of both breeds have been production. GM places selection pressure on growth, feedyard performance and
carcass traits. Expressed as dollars per head born, GM is calculated based on the
genetically profiled through Igenity to 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,
enhance the accuracy of their EPDs, Dry Matter Intake, Marbling, Back Fat and Rib Eye Area (Index/High Value).
verify parentage and, on the Simmentals, determine polledness CED ......Calving Ease Direct predicts differences in the percent of calves born
and color. unassisted out of 2-year-old dams. (Percent/High Value)
BW ........Birth Weight predicts differences in actual birth weight of progeny.
(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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