Hatched out a chick. It is walking around acting fine, but where it's cord was attached is nasty. It had the bubbles on it's belly, they looked hard so we figured they would just fall off. But yesterday evening the other chicks started chasing it around. They picked it until it was bleeding! We felt terrible, so we separated it from the others until it dried. Then this morning the chick itself must have started pecking at it, cause now that whole side of the box was covered in puss, on the cedar chips. What can i put in this to keep it from getting more infected. I considered peroxcide but needed other opinions...please help..