EPDS AND PERCENTILES

The following forms will allow you to locate an EPD’s or a selection index’s value for an animal within its breed performance. EPD value by itself doesn’t indicate where an animal ranks compared to its breed for a specific trait. To know the real value of an EPD or a selection index, we use the percentile.

The percentile is the number that reflects the position, in terms of percentile rank, that this EPD is in for the animal’s breed.  For example, a 90% indicates that the animal is in the top 10% of all animals of the same breed for this trait.

You can consult the “Basic Notions” datasheet, in the Document Center, to get more information about percentiles.

The statistical analysis to calculate breeding  values uses breed groups. Breeds that have sufficient animals recorded in the database and enough new animals added on a yearly basis are evaluated alone. Certain breeds with low number of animals evaluated must be grouped to ensure there are enough animals for statistical analysis.