What does EPD stand for?

Expected Progeny Differences - A measure of the genetic potential of an animal as a parent. These represent the difference in the average performance of the progeny in units of a trait.

Index FAQs

How should breeders factor in breed composition when using selection indexes?
ASA’s Quick Reference Guide to EPDs and Indexes, which is published in many bull sales catalogs, states the proper approach well: Important disclaimer: DO NOT compare index values of purebreds of different breeds, hybrids of different breed composition or purebreds with hybrids — our system was not developed to make valid comparison among these groups. Therefore, you must first determine the breed and breed composition appropriate for your herd and use index values to compare animals within that population.

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