GF Ultra Pro Calorie Content (calculated):ME 3964 kcal/kg;437 kcal/cup This is a nutrient dense high protein low carb food. By removing all of the Grains this leaves more room for the addition of ingredients providing high levels of proteins from multiple sources including Poultry,Meat and Fish. This High in Protein diet contains less than 17% total carbohydrates, which is more typical of the ancestral diet dogs consumed before commercial diets were available. Multiple additives from Alltech are included in this premium food that supports digestive and immune system health.This is an excellent food for All Life Stages