The dog food shouldn't have made her sick, because it would also have made the dog sick. She needs some good protein such as egg and adding water to her chicken feed making a gruel out of it. I doubt if she got so sick from eating mold off of bread. She could have found a dead animal or compost if she free ranges. Did she have a Mareks vaccine as a chick?
, Her belly is bloated. Her feathers were starting to clump up with poo just before she got sick, so I used scissors to cut them back for her and her bum is red. I'm not sure on her history with deworming and needles as I got her for free from some people who couldn't look after her anymore. That was 2 years ago. I have one other chicken "Raven" and she is normal. Thank you for responding.