Osteopathology of Chronic Fluoride Toxication in Sika Deer(<i>Cervus nippon</i>Temminck)

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  • YOSHIKAWA Hiroyasu
    Department of Veterinary Pathology, Faculty of Veterinary Medicine and Animal Sciences, Kitasato University
  • FUJIWARA Hiroaki
    Department of Veterinary Pathology, Faculty of Veterinary Medicine and Animal Sciences, Kitasato University
  • LI Liquan
    Department of Veterinary Medicine, Changchun University of Agriculture and Animal Sciences
  • XIA Zhiping
    Department of Veterinary Medicine, Changchun University of Agriculture and Animal Sciences
  • PAN Yaoqian
    Department of Veterinary Medicine, Changchun University of Agriculture and Animal Sciences
  • WANG Shuiqin
    Department of Veterinary Medicine, Changchun University of Agriculture and Animal Sciences
  • YOSHIKAWA Takashi
    Department of Veterinary Pathology, Faculty of Veterinary Medicine and Animal Sciences, Kitasato University

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  • 梅花鹿(<i>Cervus nippon</i> Temminck)の慢性フッ素中毒の骨病理像

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An histopathologic examination was carried out on two 8- and 9-year old Sika deers(Cervus nippon Temminck), that had osselets in various parts of their bones, at a deer ranch in Jilin, China. Each animal received feed containing a fluoride additive ranging in amount from 1.08〜1.60 mg/kg/day for about 7 months. The fluoride contents of the osselets examined were in the range of 499.00〜1,069.00 ppm. Autopsies revealed osselets of various sizes in the limbs and facial bones. The histological findings obtained showed an increase in the connective tissue, cartilage and bone formation, increased osteoid, and the formation of new trabecular bone. These pathological changes most likely belong to periosteal hyperostoses.

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