Since some breeds analyze different traits and present their EPDs in a different format, a sample listing of EPDs along with their explanations is usually presented at the beginning of the sire summary. An example with traits commonly found in a sire summary is shown in Table 2. Although all cattle in the data set are analyzed and receive EPDs, it is common practice for breed associations to publish only current or active sires with minimum levels of accuracy in the sire summary. Example listing and trait definition. Other information such as registration number, birth date, sire, dam's sire, breeder, and current owner are also presented.
Birth weight is related to calving ease.
Larger birth weight EPDs generally indicate more calving difficulty. Bull A's higher accuracy indicates more progeny records have been collected. Weaning weight EPD reflects preweaning growth. Progeny of Bull A can be expected to average 12 pounds more as yearlings than progeny of Bull B. Possible Change Tables You must realize that an EPD is a prediction of an individual's genetic transmitting ability for a given trait. When the accuracy is low, this margin of error is high.