I have been collecting the white tags off feed that I have tried or just looked at (the clerks would give them to me) and I think some of the protein percentages in above posts may be wrong. Dumor is 20 %, Purina Start and Grow is 18%, Nutrena 18%, Southern States 19%, and Purina Flockraiser is 20%. Anything over 20% and you are probably buying gamebird feed. I personally like the Purina products because there is less powder and the chickens eat it better. I take any powder remaining, put a little water in it, and it is gone quickly. They like it better than crumbles, but I only mix enough for that day to prevent mold.