Page 8 - Flittie-Schabel-Lazy J Bar Simmental & Red Angus Bull Sale – Feb. 18, 2023
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Sale Information                                         RED ANGUS GUIDE TO EPDS

                                                                               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
        Testicular size is an indicator of puberty in both bulls and females, so   index is a combination of the breeding objectives modeled in the HerdBuilder
                                                                 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
         GENOMICALLY-ENHANCED EPDS                               carcass traits. Expressed as dollars per head born, GM is calculated based on the
                                                                 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 profiled 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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