Page 8 - Red Hill Farms - Red Angus, SimAngus, Charolais, Cross-Ty Bull Sale – March 19, 2022
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RED ANGUS GUIDE TO EPDS

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


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