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Eastern NE KS | I trust EPD's that have high accuracy behind them. I have seen enough calves following these matings to know they are predictive. My experience with low accuracy EPD's is checkered and disappointing. Well, disappointment sticks in a mind better than success.
AAA stalls accuracy at .85 when the progeny come from a small handful of herds. Unless the owners convince outside herds to use their bull, the accuracy will not climb above .85
Moderate accuracy EPD's can be used to select a sire but they can sure lead a breeder astray. I used a young bull called Aviator when called a great big spread sire. By the time I had Aviator daughters with first calves, his yearling EPD dropped to 80-something from 120-something.
The tricky parts are: when is some accuracy is enough to not waste calves, when breeding goals are antagonistic against each other and when customers need two different things.
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Mogck Entice
