At 7 weeks, our Colored Rangers from JM Hatchery were not fully digesting their food. I grind it fairly small (field peas, wheat, corn) so that they don't have to spend energy grinding it and can gain weight instead. The tiny chunks can be seen quite clearly in their manure. They get spring water and granite grit. I started giving them larger grit (medium), but now at 8 weeks, there's been no change. They are out in a field during the day if they like and about 1/3 to 1/2 do go out of their hoop house and walk around in the pasture. The hoop house gets moved every day to few days. How can I get them to digest the feed so that they can get the nutrients from the feed and not waste our $$$? Any ideas? Any comments? Warnings? Suggestions?