As far as I know, none of the chicks were vaccinated, but I did get them from NPIP certified hatcheries, for what that's worth. His appetite seems to be fine. My vet is prescribing a sulfa so I'm hoping that works.
Mine did not show symptoms and died within hours. Do the chickens feel lighter than normal? Corid will help if they have coccidiosis in the dosage set forth above.
I am new to owning chickens. The majority of mine are now 18 weeks old. I have an olive egger rooster who has been large and healthy. He was the first to start crowing, but stopped the week after. That week I lost two chickens with only a few hours' warning suddenly to coccidiosis. They were...