I'm a little worried about getting 60% on the timed AI, then having a bunch calve late because they didn't cycle again in 21 days.  Does this happen often?

Is it because the protocol isn't followed exactly or is there another cause?

Will turning the bulls out soon after the AI decrease the number of calves born that are sired by the AI bull?

High Plains, sorry about using your name, not sure how to change mine now that I know the name was taken.