I bought 5 CX on Good Friday 2016 for meat.. I then seen people were breeding so I started the 10-20 min 2x a day at a month old... I didn't lose any and I free ranged them with the layers.. I raised 2 BBB with them and later got 4 nari. They all were together before I processed...so lots of exercise running for their life LOL I feed fermented feed from day 1.
I kept the smallest in a separate night coop and she started laying end of august to end of Oct every 3 days a small tan/brn egg. .. she hasn't started again yet
I put 7 of her eggs, a couple of BR and a few other breeds under a BR broody.. I only had one mixed roo so he's the daddy....4 cx hatched.. interesting the oldest cx hatched and the newest cx didn't.. the 2 BR hatched (and a ISA brown that disappeared? shell looked like a good hatch)
I put the CX hen in a separate coop, since she is the roos favorite, some hens and turkeys hate her...the broody would take the chicks over to cx coop and when she weaned them they wanted to stay there... which is perfect