If you keep chickens, chances are you’ve heard that adding apple cider vinegar (ACV) with “the mother” to their drinking water is good for them. The benefits of apple cider vinegar in humans have been touted for centuries, some have been substantiated and others, scientifically disproven. Its use in chickens is a more recent concept and as such, is less studied. Using ACV in the drinking water of chicken improves gut health and reduces slime in the waterers.