Have you looked into Storey's Guide to Raising Chickens? They have a pretty detailed recipe. I could write it here if you want but it is a little daunting. I buy my organic feed at a feed store, but I have it more as a back-up for them because they range, eat weeds and some kitchen scraps, and my co-op gives us all the free "distressed" produce we want. We also give them any leftover grains. My girls are pretty spoiled so they only want the greens and certain fruits, but some people's hens will eat any scraps. Don't know if that helps...
