I am looking at eggs from James Marie farm and another large farm in california ( I found them on eBay but don't know the name only the email).
I feed purina game bird startena for the first 7 weeks then the purina game bird Layena. No meds at all, elevated cages with wire bottoms for 80% of the cage, solid ends. Breed colony style with 2 dozen hens to 6 Roos in 12'L x 3.5'W x 2'T cages. A feeder in each end free choice and use low pressure watering drink cups. I'll make sure and keep some weight records when I hatch at the XL jumbos and keep y'all posted on how they do.
Sounds similar to my set up, although mine are in cages of 1 roo to 4-6 hens.
I haven't trying the game bird layena I'm going to have to ask my feed store about it. Now I'm feeding a mix of GB Startena, Flock Raiser & Layena after they start laying.
I have a colony of meal worms just starting to get big enough to feed & a colony of dubia that I typically only feed sparingly to the chicks. Otherwise my chicks get GB Startena. I start adding the pelleted Flock Raiser when they're about to point of lay just to get them used to pellets. But now that I have a huge dust bath I'm putting them in weekly they're wasting a lot less food so I may just switch to all crumbles.
I've been grilling my feed store about feed options for the adults, wonder why they've never suggested the GB Layena! Although it's possible they have and I decided against it as it wasn't available in pellets.