We feed our dogs canned Nature's receipe lamb and rice in the morning 1/4 can each, then they get the rest the next morning. In the afternoon we feed them Purina lamb and rice about a 1/4 to 1/2 cup and we give them other things to eat during the day to make up for the low amount of food they get at mealtime. They love minced raw carrots on the dry food. This is the diet we feed them and we notice their coat is extremely shiny.
Our Vet had suggested Lamb and Rice.
Good luck on whatever you decide on.
Jackie