Use of Docility EPDs

Docility EPDs can be used as part of a complete selection program in the event that a breeder needs to make improvement in a herd's cattle temperament. In the following example, a 10% difference exists between the EPDs for Bull A and Bull B. On the average, assuming the two bulls were mated to comparable females, one would expect 10 more calves out of 100 sired by Bull A to have a temperament in the most docile score (score=1) compared with calves sired by Bull B. In herds where temperament problems are not an issue, this expected difference would not be realized.

Figure 1. Docility EPD example

					Bull A	+13%
					Bull B	+3%
					Difference	10%