Page 22 - Missouri River Red Angus Bull Sale – April 6, 2022
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RED ANGUS GUIDE TO EPDS

                               RedAngus.org

          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 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 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
          index is expressed in dollars per head born (Index/High Value).
          HB .......HerdBuilder is a maternal selection index that predicts the economic differences of animals for traits
          that are important from conception through weaning. Expressed as dollars per head born, HB is calculated based
          on the scenario that bulls are mated to heifers and cows, replacement heifers are retained and all remaining
          progeny are marketed at weaning. Traits included in the HB index include Calving Ease Direct, Calving Ease
          Maternal, Weaning Weight, Milk, Mature Weight, Heifer Pregnancy and Stayability (Index/High Value).
          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 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).


          CED ......Calving Ease Direct predicts differences in   CEM ......Calving Ease Maternal predicts differences
          the percent of calves born unassisted out of 2-year-old   in the percent of daughters who are able to calve
          dams. (Percent/High Value)      unassisted as 2-year-old heifers. (Percent/High Value)
          BW ........Birth Weight predicts differences in actual   STAY......Stayability predicts differences in the ability
          birth weight of progeny. (Pounds/Low Value)  of an animals’ retained daughters to remain productive
                                          in the herd – calve every year – through 6 years of age.
          WW .......Weaning Weight predicts differences in   (Percent/High Value)
          205-day weaning weight. (Pounds/High Value)
                                          MARB ....Marbling predicts differences in marbling
          YW ........Yearling Weight predicts differences in   score – amount of intramuscular fat measured at the
          365-day yearling weight. (Pounds/High Value)  13th rib. (Marbling Score Units/High Value)
          ADG .......Average Daily Gain predicts differences   YG .........Yield Grade predicts differences in USDA
          in weight gain between 205 and 365 days of age.   Yield Grade, which is calculated using CW, REA and
          (Pounds/High Value)             Fat. (Yield Grade Units/Low Value)
          DMI .......Dry Matter Intake predicts differences in   CW ........Carcass Weight predicts differences in actual
          daily feed intake as measured in a feedlot during the   hot carcass weight. (Pounds/High Value)
          post-weaning period. (Pounds/Low Value)
                                          REA .......Ribeye Area predicts differences in square
          MILK .....Milk predicts differences in weaning weight   inches of ribeye area measured at the 13th rib.(Square
          attributed to the milking ability of the animal’s   Inches/High Value)
          daughters. (Pounds/High Value)
                                          FAT ........Fat predicts differences in the depth of
          ME ........Maintenance Energy predicts the difference
          in maintence energy requirements. (Mcal per Month/  backfat measured between the 12th and 13th ribs.
          Low Value)                      (Inches/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)

        20                                              Missouri River Red Angus
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