Calorie Content (calculated) (ME): 970 kcal/kg, 97 kcal/tray. Purina Bella Porterhouse Steak Flavor is formulated to meet the nutritional levels established by the AAFCO Dog Food Nutrient Profiles for maintenance of adult dogs. Calorie Content (calculated) (ME): 970 kcal/kg, 97 kcal/tray. Purina Bella Filet Mignon Flavor is formulated to meet the nutritional levels established by the AAFCO Dog Food Nutrient Profiles for maintenance of adult dogs.