Glossary & EPD Explanations
PERFORMANCE DATA All of the EPDs, birth weights, 205-day weights, ratios and carcass information in this catalog are official data processed by the American Angus Association and Red Angus Association of America. The infor- mation was the most current information available prior to printing the catalog. Supplemental information will be available sale day. EXPECTED PROGENY DIFFERENCES EPDs are the prediction of how progeny from each animal is expected to perform relative to the progeny of other animals in the Angus breed. As data continues to accumulate, accuracy levels rise and EPDs will shift accordingly. CALVING EASE DIRECT (CED) Is expressed as a difference in 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. Breed average is +6. BIRTH WEIGHT EPD (BW) Expressed in pounds, is a predictor of a sire’s ability to transmit birth weight to his progeny compared to that of other sires. Breed average is +1.3. WEANING WEIGHT EPD (WW) Expressed in pounds, is a predictor of a sire’s ability to transmit weaning growth to his progeny compared to that of other sires. Breed average is +67. YEARLING WEIGHT EPD (YW) Expressed in pounds, is a predictor of a sire’s ability to transmit yearling growth to his progeny compared to that of other sires. Breed average is +117. SCROTAL CIRCUMFERENCE (SC) Scrotal measurements in centimeters will be cataloged on all bulls selling. A measurement of 33 centimeters is considered acceptable for yearling bulls. The larger the measurement is a good indication of semen volume one can expect from each bull. Scrotal circumference in catalog is adjusted to 365 days of age for yearling bulls. Older bulls are actuals. DOCILITY (DOC) Is expressed as a difference in yearling cattle temperament, with a higher value indicating more favorable docility. Breed average is 19. CLAW SET EPD (CLAW) Is expressed in units of claw-set score, with a lower EPD being more favorable indicating a sire will produce progeny with a more ideal claw set. Breed average is 0.49. FOOT ANGLE EPD (ANGLE) Is expressed in units of foot angle score, with a lower EPD being more favorable indicating a sire will produce progeny with a more ideal foot angle. Breed average is 0.47. MATERNAL MILK EPD (MILK) Is a predictor of a sire’s genetic merit for milk and mothering ability as expressed in his daughters compared to daughters of other sires. In other words, it is that part of a calf’s weaning weight attributed to milk and mothering ability. Breed average is +26.
CARCASS WEIGHT EPD (CW) Expressed in pounds, is a predictor of the differences in hot carcass weight of a sire’s progeny compared to progeny of other sires. Breed average is +54. MARBLING EPD (MARB) Expressed as a fraction of the difference in USDA marbling score of a sire’s progeny compared to progeny of other sires. Breed average is +0.75. RIBEYE AREA EPD (RE) Expressed in square inches, is a predictor of the difference in ribeye area of a sire’s progeny compared to progeny of other sires. Breed average is +0.69. FAT THICKNESS EPD (FAT) Expressed in inches, is a predictor of the differences in external fat as measured between the 12th and 13th rib of a sire’s progeny com- pared to progeny of other sires. MATERNAL WEANED CALF VALUE ($M) An index, expressed in dollars per head, predicts profitability differ- ences from conception to weaning. Traits included are as follows: calving ease direct, calving ease maternal, weaning weight, milk, heifer pregnancy, docility, mature cow weight, claw set and foot angle. Breed average is +64. WEANED CALF VALUE ($W) An index, expressed in dollars per head, to predict profitability differ- ences in progeny due to genetics from birth to weaning. Traits includ- ed are as follows: birth weight, weaning weight, milk and mature cow weight. Breed average is +61. FEEDLOT VALUE ($F) An index, expressed in dollars per head, to predict profitability differences in progeny due to genetics for post weaning feedlot merit compared to progeny of other sires. Traits included are as follows: yearling weight (gain), carcass weight and dry-matter intake. Breed average is +93. GRID VALUE ($G) An index, expressed in dollars per carcass, to predict profitability dif- ferences in progeny due to genetics for carcass grid merit compared to progeny of other sires. Traits included are as follows: carcass weight, marbling, rib eye and fat. Breed average is + 55. BEEF VALUE ($B) An index value expressed in dollars per head, is the expected average difference in future progeny performance for post-weaning and carcass value compared to progeny of other sires. Breed average is +152. COMBINED VALUE ($C) An index expressed in dollars per head, which includes all traits that make up both Maternal Weaned Calf Value ($M) and Beef Value ($B) with the objective that commercial producers will replace 20% of their breeding females per year with replacement heifers retained within their own herd. Breed average is +260.
Frey Angus Ranch Production Sale
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