I bought a Chiangus bull back in October. He came with a sperm count of course. I kept him up a few weeks to make sure he knew he was home, and where the feed was at. He's bred 3 cows since he's been turned out, and all three have come back in heat. I haven't seen him the act to know for sure, but I think he must have an issue. There is a chance, that it's the 3 cows, but I seriously doubt it on 2 of them. They are 2 of my most reliable breeders. I sure was looking forward to getting some calves out of him, he was a beauty to behold.