I have looked on various BYC forum postings & can't really find a definitive answer. I have been feeding my 8 BO's & RIR's Purina Start & Grow Medicated since they were born 8 weeks ago. They eat 1+ quarts of feed a day. They are doing great - getting big, beautifully feathered, feisty. Everyday they also get: a scrambled egg, tbsp of yogurt, chopped fruits/vegs & they free range a few hours a day. Also I just started giving them a few mealworms or the occasional steak bone just for fun (they LOVE that). Grit also provided free choice. I have to make a trip to the feed store this week for more feed. The store sells Start & Grow (both med & non-med), Flock Raiser, & Layena. I know it is not time for Layena. The bag recommends Start & Grow until ~18 weeks or starting to lay. Is it recommended that I start feeding them non-medicated now or continue with the medicated? What Flock Raiser is for? Egads, I AM confused.