Even though the ASA encourages its members to DNA test their animals, members should continue to collect performance data.

No matter how good the genomic tests are, members should still collect phenotypic measurements (e.g., birth weights, weaning weights, docility scores) on their cattle. Collecting performance data will help scientists develop better DNA tests and improve MBV prediction equations. In addition, high levels of EPD accuracy can be achieved only through the collection of large numbers of phenotypes.

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