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Fluorosis in dairy cattle

W Griffith-Jones

    The Veterinary Record
    |January 29, 1977
    PubMed
    Summary
    This summary is machine-generated.

    High fluorine levels in dairy cows are linked to arthritis. Mineral supplements were the primary source of excess fluorine, causing bone damage and reduced production in affected herds.

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    Area of Science:

    • Veterinary Medicine
    • Environmental Toxicology
    • Animal Nutrition

    Background:

    • A high incidence of arthritis was observed in 21 dairy herds.
    • Elevated fluorine levels were detected in bone samples from affected cows.

    Purpose of the Study:

    • To investigate the cause of high arthritis incidence in dairy herds.
    • To determine the source and correlation of elevated fluorine levels with arthritis in dairy cows.

    Main Methods:

    • Analysis of bone samples for fluorine levels.
    • Examination of herbage, water, mineral supplements, and feed for fluorine contamination.
    • Clinical and dental examination of affected cows.

    Main Results:

    • Elevated bone fluorine levels (2000-8000 ppm) were found in over 100 cows with arthritis.

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  • Mineral supplements were the main source of excess fluorine in most herds.
  • Dangerous fluorine levels (3000-13000 ppm) were present in 16 out of 31 mineral supplement samples.
  • A statistical correlation was found between high bone fluorine and peri-articular damage, debility, and production loss.

    • Conclusions:

    • Excessive fluorine intake, primarily from mineral supplements, is a significant cause of arthritis in dairy cows.
    • Fluorosis, indicated by bone and tooth lesions, leads to debility and economic losses in dairy production.
    • Careful monitoring of fluorine content in animal feed and supplements is crucial for dairy herd health.