i'm currently researching chicken feed, and what is the best. the one's i've come across, even the organic ones, list corn as the main ingredient. is this ok for chickens? cuz i know it's not for dogs. of course they're 2 different animals....but i thought too much corn for chickens wasn't good. i'm always reading not to feed them to much scratch. and what is Methoinine? i think i read somewhere that it's bad.....and it seems to be in all the feeds i've seen, even organic.