Hi Jeremy and Mike-
Congratulations on the new mastiff pups! They are wonderful dogs.
To you both: I would definitely caution against using THK as a sole diet for your growing puppies. The company itself is infamous for diets that are lacking in nutrients per AAFCO and the NRC. Using it supplementally is safe, but not long term by itself.
However, it does already sound like you both have decided to use a large breed puppy kibble base which is a much better idea. Tripett is a good choice for a canned topper since the calcium and phosphorus are very low and already balanced properly.
Most veterinary nutritionists recommend using a food from a larger company that invests in feeding trials. Obviously those companies being Hill’s and Purina. I do however understand that many do not feel comfortable using those brands. Dr.Tim’s Kinesis has also been feed trialed and is safe for large breed puppies.
Others that I recommend that meet the criteria for large breed puppies based on lab analysis are: Fromm Gold Large Breed Puppy, NutriSource Large Breed Puppy, Nulo Puppy(formulated by a veterinary nutritionist they have staffed), Precise Holistic Complete Large & Giant Breed Puppy, Solid Gold Wolf Cub.
