Other Things to Remember Don't forget, Limousin EPDs cannot be directly compared to EPDs of other breeds. For example, it's like comparing two temperatures, one measured with a Fahrenheit thermometer which is based on a freezing temperature of 32 and the other based on the reading of a Celsius thermometer where freezing is equal to 0. For the case of Limousin as compared to the British breeds, Limousin uses a different and higher zero EPD point from which to base its values. Hence, the specifications used in the above examples only apply to Limousin cattle. About Accuracy Accuracy is a measure of an EPD's reliability.
Most bulls purchased by commercial cattlemen have EPDs with fairly low accuracy.
However, EPDs with low accuracy are still more reliable predictors of genetic potential than adjusted weights or ratios. What's more, the reliability of the average EPDs for the sires that comprise a producers entire bull battery may be quite high. Average 20 lbs. As the number of bulls increases, the accuracy associated with their average EPD for any given trait also increases.