We had a rodeo of sorts 5-6 years ago and ended up with 6-7 13-14 month old heavy bred weaned heifer calves. 1 died trying to calve, 1 I pulled the calf but ruined the heifer for future breeding, 1 calved at the salebarn with the other breds a few days later. Since then we always give 10cc of Dex to all heifers at weaning in November and then again at worming in March. Does anyone else do this? Why or why not? Trying to decide if we should continue. We sell in July and guarantee open heifers. This year we had 2 breds and got hit pretty hard on them. I knew they might be bred but couldn't catch them in time to abort so took a gamble.