Field & Trial Puppy food is specifically formulated to meet the nutritional requirements of puppies and young working dogs during their first and most crucial stages of development. 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.