I want to white small buffalo child

For a dairy buffalo calf, do not choose only by white color. Pick a healthy Murrah or Nili-Ravi calf with a straight back, bright eyes, clean navel, and no loose dung. White markings can be normal in Nili-Ravi, but the calf should be active and drinking well. If you want, I can help you shortlist the best dairy buffalo options for your budget.