NutriSource® Performance Chicken & Rice Formula Dog Food provides super premium nutrition for hard working, pregnant and nursing dogs as well as dogs that need to gain weight. Real Chicken, the number one ingredient in NutriSource®  Performance, provides high quality protein to maintain muscle mass and strength in hard working dogs. High quality fats and carbohydrates provide the fuel to perform to the highest level. Chicken provides the flavor to encourage ready acceptance and eating under stress. The high nutrient density in NutriSource® Performance helps hard working dogs maintain energy and endurance.