Effects of inorganic fluorides on animals

Abstract

Damage to animals by atmospheric fluoride pollution involves only those animals who subsequently graze on contaminated forages. The chronic disease which results has been most extensively studied in cattle, where the general symptoms are: A n interference with normal dentition, development of osseous lesions, and a diminished appetite which may lead to weight loss or decreased milk production. Studies completed to date would indicate that depending on the conditions of exposure the tolerance level for dairy cattle is about 1.3 mg F/kg (40 ppm F in diet). Because the route of exposure is via the forage, it would seem unreasonable to base any control standard on atmospheric fluoride levels. The forage fluoride levels, analytical evidence from the animal, or even some early sign of fluoride ingestion on the animal might form a more logical basis for a standard. © 1964 Air & Waste Management Association.