Examples on How to use EPD

The following video gives a look at the basics of EPD and how they are used in the selection of beef cattle.

Details: Created: 24 March 2019; Hits: 3357

Genetic Selection Tools - EPDs

August 06, 2019

EPD ASA

EPD Movement:Change is Inevitable

Editors’ note: During the April board meeting, the Board of Trustees passed a directive to add possible change to the main animal page in Herdbook. Wade Shafer, Ph.D. This tenet certainly holds true when it comes to genetic evaluation. By now, all of us are well aware that EPD inevitably change over time. Curiously, change, particularly more than moderate…

March 21, 2019

EPD ASA

EPD Accuracy & Possible Change

Accuracy is a numerical expression that gauges how much information went into the calculation of an animal’s EPD, and therefore how much confidence we can place in the estimate. Each EPD has an associated accuracy that ranges from 0 to 1. To make the most effective use of accuracy, users need to understand the concept of possible change—in both groups and…

March 21, 2019

EPD ASA

Quick Reference to ASA EPD and $ Indexes

Expected Progeny Differences (EPD): EPD are the most accurate and effective tool available for comparing genetic levels. In using EPD, the difference between two sires’ EPD represents the unit difference expected in the performance of their progeny. For example, if sires A and B have EPDs of +10 and –5, a 15-unit difference would be expected in their…

March 15, 2019

EPD ASA

Expected Progeny Differences FAQs

by Dr. Lauren Hyde, IGS Geneticist and Dr. Wade Shafer Lauren Hyde, PhD Q 1. How do you balance EPD selection and actual phenotypes? Expected progeny differences (EPD) have a clear advantage over less sophisticated predictors such as raw weights and contemporary group ratios. Performance data are subject to environmental influences, such as available feed…