I have recently changed my feed to Purina layer crumbles. I had been doing a mix with oyster shell previously but felt they avoided it more once the oyster shell was in. So switched to this feed. Since I’ve started one of my chicks has a reddish brown poop. It’s solid this color. I’ve looked at pics of cocci poop and it doesn’t look like any of the pics I’ve seen. However, I do feel like it could be blood. Would it hurt to treat the girls with amprolium if they don’t have cocci to just be on the safe side?