We have done some research on mixing our own feed as well. We found that Heim's Feed Mill in St. Cloud has a concentrate that you can mix with corn, oats, soybean meal, oyster shell and grit. We have all the grains as well. I will keep everyone posted how this works....we are finishing off our bags from Heims first.We found it much cheaper to call up our local feed mill that is associated with Cenex and have them mix us 1,000-1500 lbs at a time when we have our Crosses growing out. We are now going to have them grind us some layer feed for the winter but are first going to try sprouting whole grains instead because my husband's family grain farms all around our house so we are going to just get grain from them and sprout it. Will be much cheaper. We also feed a lot of kitchen scraps suitable for chickens. I found they LOVE beets. I cut up over grown Cukes for them also. We also have our hens out in large runs so they eat lots of grass and scratch in the tilled end of the garden that did not get planted this year. Not sure that there will be many worms left for next year there! But the bugs are not so bad in the garden area anymore either!