Female Break Time?

Just wanted to know how much time the female needs between males ??

even with using the ultrasound, once the female's follicles get to 12mm. I like to see one good lock a month. if the male isn't seeing too many females, you could go a few times a month. but a few days in and a few days out with the same female isn't needed and can make them lose interest in each other after a while.