Nutritional secondary hyperparathyroidism in free-living fledgling American crows (Corvus brachyrhynchos brachyrhynchos).

B P, Tangredi; L P, Krook

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Journal of Zoo and W...arrow_drop_down

Journal of Zoo and Wildlife Medicine

Article . 1999

Data sources: Europe PubMed Central

Nutritional secondary hyperparathyroidism in free-living fledgling American crows (Corvus brachyrhynchos brachyrhynchos).

descriptionPublicationkeyboard_double_arrow_right Article 22 Nov 1999 English Journal:Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians, volume 30 (issn: 1042-7260,

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Authors: B P, Tangredi; L P, Krook;

pmid: 10367650

Nutritional secondary hyperparathyroidism in free-living fledgling American crows (Corvus brachyrhynchos brachyrhynchos).

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Abstract

From June 1994 to June 1996, 18 fledgling American crows (Corvus brachyrhynchos brachyrhynchos) from multiple locations on Long Island, New York, were presented with signs of metabolic bone disease characterized by folding fractures of the proximal tibiotarsus. Plasma alkaline phosphatase levels were elevated, and the calcium/phosphorus ratio and 25-hydroxycholecalciferol (25-(OH)D3) levels were decreased. The histopathologic diagnosis was parathyroid hyperplasia and generalized osteodystrophia fibrosa. A diet low in bioavailable calcium and/or vitamin D3 was the probable cause. Also, exposure to xenobiotics could have contributed to the depression of 25-(OH)D3 levels.

Keywords

Male, Hyperplasia, Tibia, Bird Diseases, New York, Osteitis Fibrosa Cystica, Tarsus, Animal, Nutrition Disorders, Parathyroid Glands, Radiography, Songbirds, Fractures, Bone, Animals, Female, Hyperparathyroidism, Secondary

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