I have 25 barred rocks (9 weeks old) that I am raising for meat. I may keep 3-5 hens for eggs. My question is why don't the feed producers label the content of their products clearly. Grain products and bakery by-products. What are these. I am new to chickens and thought raising my own would be healthier. I've been reading about the soy in animal feeds lingering in the meat and eggs. Is this true? How can you tell what's really in poultry feed? Doesn't soy act like a hormone?