We got a new 3 yr old bull and he has been with our herd for a few weeks now. I've noticed vaginal bleeding from 3 heifers after he has bred them. I haven't seen blood from any of the cows. Is this bull just being too rough with the heifers? Every year we have a few 1st time heifers and I've never noticed blood any other time with our previous bulls. So I'm worried if he is injuring them and also if they will get bred...I believe blood will kill semen.