What is best diet for dashound puppy .

It really isn't any different than any other puppy. Get some puppy food and follow the instructions for the amount.

Feeding Puppies: What, When, How (http://www.peteducation.com/article.cfm?cls=2&cat=1651&articleid=704)

I have a miniature daschund and I found that the food I am feeding her really makes a difference with her coat. I am feeding her Natural Choice Puppy--Lamb and Rice. Everyone that meets her can't believe how soft her coat is. Since she has just turned one, I am now feeding her Royal Canin--Mini Daschund. It is specially formulated for the joints and back problems these dogs tend to develop. I'm not an expert by any means--but I can tell a big difference with my dog!