My recipe, generally, is: 2 parts whole wheat, 2 parts whole oats, 1 part whole corn, 1/4 part sunflower seeds. I soak the wheat, oats, and corn for 3 days, the sunflower seeds for 12 hours, or not at all.
Because it is winter and they can't forage many worms or bugs, I also am adding meat in...
Also, if you grow your own you can choose corn, oats, and wheat that have the highest nutritional value, which commercial feed does not have. The oldest varieties have the highest nutritional value. For instance, blue hopi corn.
I buy whole grain at the feed mill. Corn, oats, wheat, sunflower seeds. The whole wheat cost me $5.70 per 25#. That's 22.8 c per pound. The oats were 24.4 c per pound. The corn was even cheaper. You can also grow red wiggler worms in a box so the chickens have them over the winter when they...