Author: Tangredi, Basil P.

Source: Avian and Poultry Biology Reviews, Volume 18, Number 2, November 2007 , pp. 47-56(10)

Publisher: Science Reviews 2000 Ltd

Abstract:

Six published case reports of nutritional secondary hyperparathyroidism are described occurring in different species of juvenile wild birds worldwide. Gross skeletal deformities are characterised by fractures and curvature of the long bones and beak resulting from an altered calcium/phosphorus ratio in the blood. The histopathologic diagnosis is osteodystrophia fibrosa and parathyroid gland hyperplasia. Deficiency of vitamin D is implicated in the two instances in which this was measured. Environmental factors include: decreased biodiversity of food sources, surface water pollution, seasonal conditions affecting food and exposure to UV light, and sub-lethal exposure to xenobiotics. Evidence is presented on the possible role of xenobiotics in the pathogenesis.

Keywords: nutritional secondary hyperparathyroidism; metabolic bone disease; Vitamin D; xenobiotics

Document Type: Research article

DOI: http://dx.doi.org/10.3184/147020607X251212

Affiliations: 1: Volunteers For Wildlife, Inc., 27 Lloyd Harbor Rd., Huntington, New York 11743, USA

Publication date: 2007-11-10

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