Hi! I recently bought 10 Cornish cross, they turned 2 weeks old last Thursday. Am wondering if I feed them scratch grains ( Manna Pro brand) will they be okey.. Also I bought them medicated feed because I couldn't find non medicated, obviously they'll be okey with that, it will probably be gone by next week ( they eat so fast!). My concern is that since the feed is medicated, (am guessing it'll have a negative result when butchering time comes?), should I begin feeding them the scratch grain now or next week? Thanks for your help!