I am also interested. I have heard many good things about Mazuri, and at the moment I feed Flock Raiser (Purina). But I would like to find an alternative to both, because Mazuri is not available where I am and Flock Raiser is not cutting the mustard, I would not reccommend it to someone who is feeding more than handfull of birds (it's quite expensive). I prefer my birds to have some animal protein too, because chickens are omnivores by nature.
I buy a50LB bag of 100% guarantee nutritional complete chicken feed and layer scratch at TRACTOR SUPPLY or the nearest Agriculture supply. Whichever has the most economical price.