I saw on Deer and Deer hunting the number may be as low a 5 and as high as 10. They said the studies indicate that the young bucks get alot of action. If the rut last 30 days and a buck stays with a doe for up to 72 hours then I think the number is closer to 10. I am sure there are some that get lucky more than others too but I don't believe the dominate buck gets all the action. I have seen some pretty tired and ratty looking bucks in December. Broken racks, hair missing, gimpy leggs etc.