What is the difference between an EPD and EBV?

Expected Progeny Difference (EPD) is the genetic prediction of how future progeny of each selection animal are expected to perform relative to the progeny of other animals. EPDs are expressed in units of measure for the trait, plus or minus. They are the usual language for genetic descriptions used in the North American beef industry.  

 EPDs are like Estimated Breeding Values (EBVs), in that they are estimates of genetic differences. However, EPDs focus on describing progeny differences, while EBVs focus on describing the genetic differences in the selection candidates (e.g. sires and dams). Simply, an EPD is half an EBV, all other things being equal.