Im c curious two crows have you ever sprouted grain to feed
I don't do the commercial bagged feed and make my own. But inevitably you still have to add a supplement of some kind for them to get all they need for good health. Constant laying drains a hen quickly. Meat birds won't grow well without proper feed.
You might have a look see in the Feeding your Flock section here on BYC. Lots of people into fermenting feeds and growing fodder for their flocks....
http:// your birds. How old would they have to be. What about vitimins and electrolytes in the water and egg shells for calc. It wadnt that long ago one had to make their own feedwww.backyardchickens.com/f/12/feeding-watering-your-flock
Good luck!