I don't have any answers for that question but for your sake I'm hoping you can combine and feed them all the same thing, I wouldn't be too keen on purchasing 5 different kinds of feed, hehe.
Tell me about it. Right now I have cracked corn, sunflower seeds, crimped oats, chick starter, chick grower, layer pellets large, later pellets small, layer crumbles, and wild game crumbles. And I supplement with fruits and veggies. I feel like they eat better than I do...