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Selenium-vitamin E deficiency in captive wild ducks.

A S Dhillon, R W Winterfield

    Avian Diseases
    |April 1, 1983
    PubMed
    Summary
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    Selenium-vitamin E deficiency caused anorexia, diarrhea, and leg weakness in young wild ducks. Pathological findings in gizzard and leg muscles confirmed this nutritional deficiency in affected ducklings.

    Area of Science:

    • Avian pathology
    • Nutritional diseases in wildlife
    • Comparative pathology

    Background:

    • Wild ducklings are susceptible to nutritional deficiencies.
    • Clinical signs can include anorexia, diarrhea, and locomotive issues.
    • Pathological changes in muscle tissues are key indicators.

    Purpose of the Study:

    • To identify the cause of mortality in young wild ducks.
    • To characterize the pathological findings associated with the observed clinical signs.
    • To determine if nutritional deficiencies were implicated.

    Main Methods:

    • Observation of clinical signs in a group of nine wild duck species.
    • Gross necropsy to identify visible pathological alterations.
    • Microscopic examination of gizzard and leg muscle tissues.

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    Main Results:

    • Affected ducklings (pintail, shovelers) exhibited anorexia, diarrhea, and leg weakness.
    • Gross lesions included pale gizzard and leg muscles.
    • Microscopic analysis revealed hyalinization, mineralization, and macrophagic invasion in muscle fibers.

    Conclusions:

    • The observed pathological lesions are characteristic of selenium-vitamin E deficiency.
    • This nutritional deficiency is the likely cause of mortality in the studied ducklings.
    • Highlights the importance of balanced nutrition in captive wild waterfowl.