Hi Sue-
Large breed puppies have much different dietary requirements than small and medium breeds. These dogs are at high risk for developmental orthopedic disorders caused by genetics, but also poor nutrition. It is important to watch calcium intake, so I would heed the suggestion to add too many toppers to the dry kibble during growth or use something like Trippett which has very low calcium and phosphorus.
The two companies that have done the most research in regards to large and giant breed nutrition and growth are Hill’s and Purina. A puppy food geared towards large breeds from one of those two companies would be a fine choice. However, I do understand that there are those who do not feel comfortable feeding diets from Hill’s and Purina. A few other LBP safe foods I can suggest that are from smaller companies are: NutriSource Large Breed Puppy, Fromm Gold Large Breed Puppy, Precise Holistic Complete Large & Giant Breed Puppy, Nulo Puppy, Solid Gold Wolf Cub, and Dr. Tim’s Kinesis. If you can order online, these are all available on chewy.com.
Another important thing to remember is not to overfeed, as excess weight puts strain on the developing joints and can also lead to orthopedic disorders. Shepherds are meant to be lean by breed standard, so it is best to keep them that way during growth and throughout life.
Edit: In regards to your question about Rachael Ray Nutrish. How does the other dog do on it? How is the stool quality? Does she get a clean bill of health from the vet? Does she enjoy eating the food? Your dog is the only one who can tell you how the food is working for her. The opinions of others are irrelevant.
