I got about 50 barnevelders, various ages from 2 weeks to 2 months old. I have a 12x18 horse stall that I converted to a chicken coop in my barn. I have one end heated, 7 gallon waterer. Was giving medicated chick starter but they were skinny so switched to 24% starter/grower and added chick grit and spread 13 way scratch in the pine shavings to give them something to do. I have treated with corid for 7 days when they began dropping dead. Then treated with oxine when they started just sitting all hunched up not moving when the weather got cooler.
I fogged with the oxine. Then added 3 cc per gallon to water. There were silkie hens with chicks and a few Sumatra and Phoenix pullets in the coop already when I put these guys in there. None of those chicks various breeds and their foster silkie mothers or the pullets have shown any symptoms. But I'm losing at least 1 Barnevelder a day. Am I doing something wrong or are these little guys just sickly and I can't save them?
It still sounds like cocci and once they show symptoms it is hard to stop it. I would switch them back to medicated chick feed and continue to dose with corid. Also strip the coop completely bare and bed with clean bedding. You probably will have to switch out the infected bedding several times. Keep the coop really clean so they don't consume more cocci from their infected droppings.. They will be shedding large numbers of the cocci organism in their poop until the meds start working again. Don't give added vitamins as it will interfere with the action of he cocci preventative. Keep the medicated food and water close to them near the heat source. They probably won't want to move far to eat or drink if they are feeling bad and all huddled up.
Trisha