By feeding Field & Trial Puppy food from weaning up to approximately nine months of age, you will ensure that your puppy receives all the proteins, carbohydrates, vitamins, minerals and oils which are essential for steady growth. Field & Trial Puppy food is wheat-gluten free. It also contains MOS (Mannan Oligosaccharide), a natural digestion enhancer derived from vegetable sources, to help maintain a healthy digestive system. Generations of working dogs have been raised on Field & Trial Puppy food. 27% Protein and 18% Fat.