I have 1 week old chicks. A few of them are just beginning to show some pasty butt. I've heard that vinegar is a type of probiotic and can be put in their water at this age. My question is with the feed being medicated is it alright to use the vinegar as well? I know the medication is to help in things of preventing the dreaded coccidiosis. I've had some issues with my heat lamps for some reason so they got a bit warm and I'm sure that's what caused it. I've never had to deal with this before so any help from you all is much appreciated.