I feed raw to both my boys, and they've never done this burping.
Is she gulping the food really fast? If so, she may be swallowing too much air, causing burping. To slow her down, someone had a great suggestion the other day - put a golfball in her dish w/ the food.
__________________ ~ A friend told me I was delusional. I nearly fell off my unicorn. ~ °¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie °¨¨¨°ºOº°¨¨¨° |