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EPD INFO
Birth Weight (BW) The expected di erence in average birth weight (pounds) of progeny. Birth weight reects prenatal growth, but is greatly a ected by enviromental conditions. Calving Ease Direct (CE) Calving Ease is expressed as a di erence in percentage of unassisted births in ⿿rst calf heifers. A higher value indicates greater calving ease. It predicts the average di erence in unassisted births with which a sire's calves will be born when bred to ⿿rst-calf heifers. Calving Ease Maternal (MCE) Calving Ease Maternal is expressed as a di erence in percentage of unassisted births in ⿿rst calf daughters. A higher value indicates greater calving ease. It predicts the average di erence in unassisted births with which a sire's daughters will calve as ⿿rst-calf heifers when compared to daughters of other sires. Weaning Weight (WW) The expected di erence in average weaning weight of calves. The evaluation reects the genetic inuence on pre-weaning growth rate. Weaning weights shown are adjusted to 205 days. Yearling Weight (YW) The expected di erence in average yearling weight of progeny. The evaluation reects genetic inuence on both pre-weaning and post-weaning growth rate. Yearling weights shown are adjusted to 365 days. Maternal Milk (M) The genetic ability of a sire’s or dam’s daughters to express in pounds of weaning weight in her calves due to her maternal ability through mothering instinct and milk. Terminal Sire Index (TSI) Terminal Sire Index (TSI) is a method of combining Expected Progeny Di erences (EPD) – BWT, WWT, YWT, REA, HCW, MARB and FAT – into one single value. The TSI represents a dollar index per terminal progeny produced for a bull. For example, if Sire A’s index is $231.66 and Sire B’s index is $240.00, then we would expect Sire B’s o spring to average $8.34 more net return ($240.00 minus $231.66) than Sire A’s o spring. SUMMARY: BW - small is good. All others - big is good.
This symbol means that the bull has been genomically tested (100K) and, therefore, its EPDs are “genomically enhanced.” What this means to you as a breeder is not that the EPDs are “better,” but that the EPDs are more accurate and, therefore, more reliable.
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