Carol, there is a great list of recommended foods for Large Breed Puppies on the forums. I assume you can search for ‘Large Breed Food’. That’s what I used when testing out different foods for my Newfoundland. Like you, we had some messy results from some foods that I figure were just too darn rich for her. I found Nutrisource for Large Breed to be one my Newfy girl could handle. When she got a little older, we went with Dr. Tims. I could tell she didn’t like it as much, but it is doing something great for her. Eyes and ears were clean, coat was thick and shiny.
It really was a test in progress to find a highly rated food that worked for her. Good luck!
