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Related Experiment Videos

Use of selenium in problem cattle herds.

D E Sanders

    Modern Veterinary Practice
    |February 1, 1984
    PubMed
    Summary

    Selenium (Se) supplementation in cattle feed resolved neonatal calf diarrhea and improved dairy herd reproductive efficiency, demonstrating its crucial role in animal health.

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    Area of Science:

    • Veterinary Medicine
    • Animal Nutrition
    • Ruminant Health

    Background:

    • Neonatal calf diarrhea and reproductive inefficiencies in cattle herds can significantly impact herd health and productivity.
    • Colibacillosis is a common cause of neonatal calf mortality.
    • Reproductive issues such as cystic ovaries and retained placentas, along with low conception rates, can plague dairy herds.

    Observation:

    • A beef herd experienced high neonatal calf mortality due to diarrhea, with necropsy findings consistent with colibacillosis.
    • Vaccination reduced but did not eliminate the problem.
    • Low serum selenium (Se) levels were detected in both affected herds.
    • A dairy herd exhibited reproductive problems and low conception rates, with inconclusive diagnostic results apart from low serum Se.

    Findings:

    • Supplementation of Se in beef cattle premix at 90 mg/lb premix (17 lb premix/ton feed) resolved neonatal calf diarrhea and mortality.
    • Dietary Se supplementation significantly improved reproductive efficiency in the dairy herd.
    • Gross and microscopic lesions may not be conclusive for diagnosing Se deficiency.

    Implications:

    • Selenium deficiency can manifest in diverse clinical signs, including infectious diseases and reproductive failure in cattle.
    • Dietary supplementation of Se is a recommended and effective method for addressing Se deficiency in cattle.
    • Ensuring adequate Se levels is vital for preventing calfhood diseases and optimizing reproductive performance in beef and dairy operations.

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