I have a nine week old Cornish X rooster and hen. They are our pets (they are sweet things!). The rooster is pretty large and he has big legs and feet. Just recently one of his legs will give out. He doesn't seem to be uncomfortable. Could this be the start of leg problems that I've been reading about? We restrict their food-12 hours on 12 hours off and give them Broiler Booster. Any input would be appreciated. Thanks!