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Calving ease. Heifer calving ease EPDs were calculated using a multi-trait animal model including
birth weight and calving score data. The result is a heifer calving ease direct and heifer calving ease
maternal EPD, as defined below.
- Calving Ease Direct (CED): Calving Ease Direct EPD is expressed as percentage of unassisted births,
with a higher value indicating greater calving ease in first-calf heifers. It predicts the average difference
in ease with which a sire's calves will be born when he is bred to first-calf heifers.
- Calving Ease Maternal (CEM): Calving Ease Maternal EPD is expressed in percentage unassisted births with a
higher value indicating greater calving ease in first-calf daughters. It predicts the average ease with
which a sire's daughters will calve as first calf heifers when compared to daughters of other sires.
Related articles:
Birth weight EPDs and Calving Ease EPDs click here
Calving Ease EPD background click here
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