Pigeon Guy is good with formulating and protein levels, etc. He may have something to say!
I have my feed formulated at a local feed mill. I wasn't thinking about gluten, but I guess it IS gluten free! My main concern was NO SOY and not GMO. Since I had to get a minimum of 300 lbs, I wanted it to be a middle-of-the road formula that had low enough calcium that I could feed it to the chicks and high enough protein for the layers. That way I could feed it to everyone and just add protein for the babies and free-choice calcium for the layers. (I don't keep the whole 300 lbs...I found someone to share w/me)
Here is the formula he's currently using and the lbs to make 300 lbs. You could divide to make a smaller amount. This is about 16% protein:
122 lbs organic corn
135 lbs organic peas
15 lb Fertrell poultry nutri-balancer (organic)
10.8 lb. Organic Alfalfa Pellets
10.2 lb Fish Meal
6.6 lb. Calcium Carbonate
I would like to drop the peas if possible, and add more protein from meat sources. He is currently working on ideas but he told me that he can't up the fish meal too much or the eggs will begin to take on a fishy smell and taste.