Genetic Prediction in Beef Cattle and Expected Progeny Differences

Mark Z. Johnson, Oklahoma State University Extension Beef Cattle Breeding Specialist — What is an Expected Progeny Difference (EPD)? An EPD is a prediction of how future progeny of a parent are expected to perform relative to the progeny of other animals. EPDs are expressed in the unit of measure for that trait, plus or minus. EPDs are based on: 1. Performance of the individual animal we are looking at relative to the contemporary group of animals it was raised with. 2. The performance of all the animals in the breed’s database which have pedigree relationship to that animal. Including…

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