28 days and that is why you see trophy potential plummet. Lesser dominate bucks are breeding those other does while Monster Whitetail gene pool is staying with that doe.

IMHO that is one step in lowering deer numbers in Pa. Less doe being bred if you have less buck, while leaving fewer DNA positive bucks to breed with fewer offspring of those DNA positive doe.
Be it race horses,cows,hogs,emus,elk whatever all breeders know you are much more apt to produce a quality offspring by breeding supierior genetics. The same holds true in captivity or the wilds.
you wouldn't breed a donkey to a blue ribbon philly and produce a Triple Crown winner would you?