From what I gather re: white vinegar/store vinegar/distilled is that, although it is great for cleaning, when it becomes filtered/distilled, almost all of the "good" properties are taken out. If you look at a bottle of Raw Apple Cider Vinegar vs. BrandX vinegar, the Raw vinegar is cloudy, which is all the good stuff. It is referred to as "The Mother".
I am excited to be able to add some to my flock's water (when I get them)!
On a side note:
My husband and I keep Braggs ACV on hand all the time. Whenever we feel a cold or sore throat coming on, we take a couple tablespoons. It is also the only thing that helps me with bladder infections. I take a couple ounces when I first feel symptoms, a couple more a few hours later...Just like that-gone.