Fibrous osteodystrophy in a dromedary camel

Area of Science:

• Veterinary Medicine
• Comparative Pathology
• Animal Nutrition

Background:

• Nutritional secondary hyperparathyroidism (NSHP) is a metabolic bone disease caused by dietary imbalances, primarily low calcium or high phosphorus.
• Dromedary camels (Camelus dromedarius) are susceptible to metabolic bone diseases if their diet is not species-appropriate.

Observation:

• A 6-year-old female dromedary camel presented with facial swellings and significant serum biochemistry abnormalities, including hyperglycemia, hypocalcemia, hyperphosphatemia, hypoproteinemia, and hypoalbuminemia.
• Postmortem examination revealed fibrous tissue replacing jawbones and enlarged parathyroid glands, consistent with fibrous osteodystrophy.
• Histopathology confirmed proliferative fibrous tissue in the maxilla and prominent parathyroid glands with hyperplastic cells.

Findings:

• The camel's diet, consisting of grass hay, sweet feed, alfalfa pellets, and treats, was not balanced for a camel and likely contributed to the metabolic derangement.
• The clinical signs, biochemical profile, and pathological findings strongly supported a diagnosis of nutritional secondary hyperparathyroidism.
• Despite the presumptive diagnosis of fibrous osteodystrophy, the underlying cause was identified as a dietary imbalance leading to secondary hyperparathyroidism.

Implications:

• This case highlights the critical importance of balanced nutrition in captive dromedary camels to prevent metabolic bone diseases.
• Inappropriate diets can lead to severe health consequences, including pathological bone changes and potentially fatal conditions.
• Veterinarians should consider nutritional assessment and dietary correction as a primary diagnostic and therapeutic approach for camels presenting with bone abnormalities and related clinical signs.