_____--With those breeds there is no real advice. Just make sure you have plenty of room and watch out for the rooster fights. Most of the breeds can be butchered arounf 20-24 weeks old. Jersey giants mature very slowly so your looking at a year with them. I would also not feed them for 24 hours before butchering so you dont have to deal with a full crop. But as for feeding them, just feed them like any of other chickens. The feed restrictions are for the cornish x breed.