What are Expected Progeny Differences (EPDs)?
Expected Progeny Differences, or EPDs, are highly accurate means of predicting how an animal’s offspring will perform. They describe genetic differences between animals within a breed. For example, a bull’s birth weight EPD will help predict how much his offspring will weigh at birth in relation to the birth weight of an average Angus calf. EPDs are based on the performance of the animal and performance of its ancestors, relatives and progeny.