We don;t have a hard and fast number. Below breed average for BW and above breed average for CED. The 2 that we use on heifers have BW of -5.1 and 0.0 with CED of 11 and 6. We've also used one that had a BW of -8.1 and a CED of 20. But he isn;t anything we'll use much. Although there is a gent near hear that thinks that his heifers make great cows.
dun