It is equally important to keep your HD diagnosed dog fit and trim. Daily exercise helps him to cope more easily with his problems and keeps him healthy and lean. Don't deprive him of much needed and desired exercise merely because he has been diagnosed with a problem. Let him do as much as he can. Proteins, fats, and carbohydrates provide the nutrients that are necessary for energy.
Dogs expend energy in many different ways.
For example, lactating bitches, heavy exercise, and regulating body temperature during cold weather can cause dogs to expend a lot of energy. Outdoor dogs are likely to experience increased levels of exercise and thus require a higher percentage of protein and fat for energy production than a dog who stays indoors most of the time. Extremely active dogs may even need a percentage or two higher. Select the lower percentage for an older dog who is healthy, but not very active. Do not add supplements, especially calcium.