I started feeding my chickens a homemade mash earlier this year and they love it. Not the cheapest by any means but it can be made a whole lot cheaper by making it heavier on oats, corn, wheat, alfalfa, etc. and cutting out the things I throw in to spoil the birds.
Hubby thinks I'm crazy, but I also started raising Turkestan cockroaches in a big bin in our garage. They run wild outdoors here (not a big indoor pest like the Germans), so all I had to do was catch a few big breeders and we were off to the races. The birds have a hard time foraging for them because they're only really active at night, but they lose their minds when I throw them into the mash.