It's a general immunity booster and conditioner. I've used it in the past for our meat/show rabbits when litters came down with matting of the eyes. A couple of days of vinegar in their water and it disappears.
I've read some great articles about folks using it in a 50% drench for sheep to treat liver flukes and mystery illnesses with miraculous results.
Racehorse owners use it to insure more female offspring and it is supposed to yield multiple births in sheep.
We used it for our rabbits to get more female kits and it seemed to work.
Unpastuerized is best, as it still contains the probiotics that are usually killed by the heat of processing.