I do not want my family to eat a turkey that has been fed medicated feed. How many days or weeks should I get them off the medicated feed before the turkeys can be eaten without the medicated feed in their system? Is it okay to just allow turkeys to range feed ? Do they have to have anything else to be healthy? I have five turkeys that are about 3-1/2 months old, and seven that are about 2 or so months old. They are Bonze and Spanish Black.