OK, from what I understand, the main difference between all feeds besides layer is the protein percentage. Layer has calcium, but the rest (starter, developer, grower, flock raiser, meatbird, gamebird, etc) just differ in protein. Now I know different brands have different levels of everything and better or worse ingredients and there's a million threads on here discussing that, but it seems like between the TYPE of feed protein is the difference and the price almost directly correlates with the amount of protein. I'm sure there's not a concensus on the perfect protein percentage but if I can get a bigger bang for my buck on meatbird feed (cost per pound of protein) could I just mix this with a lower protein percentage feed to save some money. For example I've seen grower at 18% and grower at 16% and meatbird at 21%, if it was financially advantageous to mix the 16 and 21 to get about 18 is there any reason not to? Also can you give too much protein? Would 21% be bad for layer chicks? What about layers in general once they start laying (of course I'd have oyster she'll available). Would they eat less feed? I know brands are important but I'm trying to leave that out.