German Shepherd nutrition: joints, EPI and bloat

In UK veterinary records, the most common recorded causes of death in German Shepherds were musculoskeletal disorders and an inability to stand, and osteoarthritis and overweight were both among the five most common diagnoses. For this breed, feeding is mostly about joints: slow, lean growth in the first year and a lean adult weight after that. Two digestive problems also run in German Shepherds, exocrine pancreatic insufficiency and bloat, and both are worth recognizing early.

Size and calorie needs

A VetCompass study of German Shepherds under primary veterinary care in the UK found a median adult weight of 40.1 kg for males and 34.8 kg for females, with a median longevity of 10.3 years. The most common disorders were ear infections (7.9%), osteoarthritis (5.5%), diarrhea (5.2%), overweight or obesity (5.2%) and aggression (4.8%).

The Merck Veterinary Manual's standard estimate starts with resting energy requirement (RER), 70 multiplied by body weight in kilograms raised to the power 0.75, in kcal a day. Adult dogs are then fed about 1.6 times RER if neutered, 1.8 times if intact and 1.4 times if prone to obesity. At ideal weight, rounded to the nearest 10 kcal:

Working dogs in daily training need more, and a family dog that gets two walks a day often needs less. Adjust the portion by about 10% at a time and recheck body condition every few weeks. The ribs should be easy to feel with light pressure, and from above there should be a clear waist behind them. The thick coat hides a thickening middle, so feel rather than look. Any complete and balanced adult food provides enough protein for a healthy German Shepherd; we found no evidence for a breed-specific protein target.

Puppies, hips and elbows

Hip dysplasia is a recognized problem in the breed, and screening appears to help. In Swiss hip screening records from 1995 to 2016, the share of radiographed German Shepherds with hip dysplasia fell from 46% to 18%. Only about 31% of the breed was screened, so these figures do not describe all German Shepherds, but they show why a puppy buyer should ask to see both parents' hip and elbow results.

The Swiss authors describe hip dysplasia as a genetic disease modulated by environmental factors. Growth rate and body weight are the parts an owner controls:

• Feed a large-breed puppy food. Merck gives puppy energy needs as about 3 times RER under 4 months of age and 2 times RER after that. It warns that very high calcium intake, above 3% of dry matter, causes more severe osteochondrosis in young, fast-growing large-breed dogs. Do not add calcium, bone meal or other supplements to a complete puppy food.
• Measure every meal. Three meals a day for young puppies, moving to two as growth slows. Free feeding makes it hard to control intake.
• Keep the puppy lean. A German Shepherd puppy should have a visible waist and easily felt ribs. Aim for steady growth, not the largest possible dog.
• Weigh regularly. Record weight every two weeks and ask the vet to check body condition at each visit.

The long-term case for keeping large dogs lean comes from a lifetime study of 48 Labrador Retrievers. One dog in each littermate pair received 25% less food from 8 weeks of age. The leaner dogs had a longer median life span, and signs of chronic disease generally started later. German Shepherds were not studied, so applying the result to them is a reasonable inference rather than a tested finding.

Arthritis and joint supplements

Joint supplements are sold heavily for this breed, and the evidence behind them varies. A 2022 systematic review and meta-analysis of diets and nutraceuticals for osteoarthritis in dogs and cats found clear pain-relieving benefit for omega-3-enriched diets and omega-3 supplements. Cannabidiol showed a smaller effect and collagen a weak one. Glucosamine with chondroitin showed a marked lack of effect, and the authors recommended it should no longer be recommended for pain in osteoarthritis. These trials involved dogs that already had arthritis, so they say nothing about preventing joint disease in a young dog. Ask the vet about dose before starting fish oil, particularly in a dog on other medication.

German Shepherds with sore hips or backs often show it as slowness getting up, reluctance to jump into the car, a swaying or bunny-hopping gait, or wearing down the nails of the back feet. An examination is worth more than any supplement, because effective pain relief and physiotherapy exist. Weakness or scuffing of the hind feet without obvious pain can also be neurological, which is another reason for an examination.

Exocrine pancreatic insufficiency

In exocrine pancreatic insufficiency (EPI), the pancreas stops producing enough digestive enzymes, so food passes through largely undigested. A review of more than 13,000 blood tests for EPI found an association with the disease in German Shepherds, along with Chow Chows, Cavalier King Charles Spaniels and Rough Collies. In dogs the most common causes are pancreatic acinar atrophy, in which the enzyme-producing tissue wastes away, and chronic pancreatitis.

The typical picture is a dog that eats hungrily yet loses weight, with large volumes of soft, pale or greasy feces, and often a poor coat. A dog like that needs a vet, not more food. According to a 2024 review in the Journal of the American Veterinary Medical Association, EPI is diagnosed with a blood test for serum trypsin-like immunoreactivity (TLI), which reflects how much working enzyme-producing tissue remains. Treatment has three parts:

• Enzyme replacement mixed into every meal, as prescribed.
• A low-residue diet with moderate fat, chosen with the vet.
• Cobalamin (vitamin B12) supplementation, since dogs with EPI are often deficient.

The review describes the long-term outlook as generally good with proper treatment, although some dogs keep having signs, possibly because of gut bacterial imbalance or a second intestinal disease. Enzyme products should not be given to dogs without a diagnosis.

Bloat

Gastric dilatation-volvulus (GDV) is an emergency in which the stomach fills with gas and can twist on itself. Without treatment it can kill within hours. Large breeds are the most affected, and German Shepherds are large, deep-chested dogs. The best-known risk-factor study, a prospective study of 1,637 dogs from 11 large and giant breeds, did not include German Shepherds. It found higher risk with increasing age, a first-degree relative that had had GDV, faster eating, and a raised food bowl, to which about 20% of cases in the large breeds and 52% in the giant breeds were attributed.

• Feed from a bowl on the floor, not a raised stand.
• Use a slow-feeder bowl for a dog that gulps.
• Split food into two or more meals and avoid hard exercise around big meals. Both are standard advice, but neither was among the risk factors that study identified.
• Ask about preventive gastropexy (surgically attaching the stomach to the body wall) if a close relative has had GDV, especially when the dog is already under anesthesia for neutering.

Retching that brings nothing up, a swollen or tight belly, restlessness, drooling or collapse need an emergency vet immediately.

Diarrhea and sensitive digestion

Diarrhea was the third most common diagnosis in the UK German Shepherd records. Most episodes are short and resolve, but repeated or chronic diarrhea needs a diagnosis rather than a string of food changes, since EPI, parasites, food-responsive disease and chronic inflammatory bowel conditions look alike at home. A few habits help while that work is done. Keep one food for weeks at a time rather than rotating, change foods gradually over about a week, and keep a simple diary of stools, treats and scavenging. If a vet suspects a food-related problem, the test is a strict elimination diet with no other treats or chews. Probiotics are widely used, but their benefit for chronic problems in dogs is not well established.

Sources

1. Demography and disorders of German Shepherd Dogs under primary veterinary care in the UK. Canine Genetics and Epidemiology, 2017.
2. Nutritional Requirements of Small Animals. Merck Veterinary Manual.
3. Prevalence of Canine Hip Dysplasia in Switzerland Between 1995 and 2016: A Retrospective Study in 5 Common Large Breeds. Frontiers in Veterinary Science, 2019.
4. Effects of diet restriction on life span and age-related changes in dogs. Journal of the American Veterinary Medical Association, 2002.
5. A 2022 Systematic Review and Meta-Analysis of Enriched Therapeutic Diets and Nutraceuticals in Canine and Feline Osteoarthritis. International Journal of Molecular Sciences, 2022.
6. Breed associations for canine exocrine pancreatic insufficiency. Journal of Veterinary Internal Medicine, 2007.
7. Exocrine pancreatic insufficiency in dogs and cats. Journal of the American Veterinary Medical Association, 2024.
8. Non-dietary risk factors for gastric dilatation-volvulus in large and giant breed dogs. Journal of the American Veterinary Medical Association, 2000.