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Electroretinograms from broilers fed aflatoxin and T-2 toxin.

D B Coulter, R D Wyatt, R G Stewart

    Poultry Science
    |September 1, 1977
    PubMed
    Summary
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    This study found that electroretinograms could not detect early signs of mycotoxicoses in broiler chicks exposed to aflatoxin or T-2 toxin. Retinal function remained unaffected, indicating this method is not suitable for early mycotoxin detection in poultry.

    Area of Science:

    • Veterinary Medicine
    • Toxicology
    • Ophthalmology

    Background:

    • Mycotoxicoses, caused by fungal toxins like aflatoxin and T-2 toxin, pose a significant threat to poultry health.
    • Early detection of mycotoxicoses is crucial for preventing economic losses in the poultry industry.
    • The electroretinogram (ERG) is a sensitive tool for assessing retinal function, but its utility in detecting subclinical mycotoxin effects is not well-established.

    Purpose of the Study:

    • To investigate the potential of electroretinography (ERG) as an early diagnostic tool for mycotoxicoses in broiler chicks.
    • To determine if dietary exposure to aflatoxin or T-2 toxin affects retinal function in young chicks.

    Main Methods:

    • Thirty broiler chicks were divided into three groups: control, aflatoxin-exposed, and T-2 toxin-exposed.

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  • Chicks received their respective treatments daily from hatching to 26 days of age.
  • Electroretinograms were recorded under various light conditions (dark, light, different colors) to assess retinal responses.

    • Main Results:

    • No significant differences in electroretinogram wave amplitudes or durations were observed between the toxin-treated groups and the control group.
    • Retinal photochemistry and function remained unaltered despite dietary exposure to mycotoxins.

    Conclusions:

    • Electroretinography is not a suitable method for the early detection of mycotoxicoses in broiler chicks at the tested toxin levels.
    • Mycotoxin-induced retinal damage, if it occurs, may not be detectable by ERG in the early stages of intoxication.