The catfish feed I saw was a couple of dollars per 50 lb bag cheeper then then chicken food and it was 32% protien. The creep was almost 1/2 the price of chicken feed and just as much protien. I knew it didn't have the ca, but I keep oyster shell free choice and feed back egg shell some (need to do that more just run out of time or energy) but I couldn't figure out exactly what it was and wasn't sure if it was lacking other nutrition that a chicken would NEED.
Thanks everyone for the comments and links on both creep and catfish food.
Think I bought catfish feed at one of the mom & pop stores locally... Prob need to shop around. Think I pd $30 for 50lbs. All birds love it, dogs try & eat it too.