I went to the co-op yesterday to purchase feed/supplies and asked to purchase food for my new chickens. They are currently just into their first bag of poultry starter and they are a week old. However, 15 of the birds are Cornish X and I believed from reading here that I needed to buy "Broiler booster" for leg support. The feed store clerk told me that he had: * 18% protein typically for layers * 20% protein that he thought was the same as chick starter * 23% protein that he thought might be the same as Broiler booster * Scratch feed, a grain mix I have two "craigslist freebie" silkies (hens) giving me 1 egg per day between them, and I bought them the layer food and some oyster shell. I also bought some scratch. But I am confused about the broiler feed. Is it truly the 23% protein mix he refers to, or do I need to shop elsewhere? Can anyone clarify these protein percentages and uses for me?