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Zinc deficiency and behavior: a development perspective

E F Gordon, J T Bond, R C Gordon

    Physiology & Behavior
    |May 1, 1982
    PubMed
    Summary
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    Zinc deficiency impairs physical status and open-field behaviors in young and older rats. Even fully developed older rats show significant impairment when fed a zinc-deficient diet.

    Area of Science:

    • Nutritional Neuroscience
    • Animal Behavior
    • Toxicology

    Background:

    • Zinc is an essential trace element crucial for numerous physiological processes.
    • Zinc deficiency can impact growth, development, and overall health.
    • Understanding the effects of zinc deficiency across different life stages is important.

    Purpose of the Study:

    • To investigate the physical and behavioral effects of zinc deficiency in young (35-day-old) and older (300-day-old) male Holtzman rats.
    • To compare the impact of zinc deficiency on different age groups.
    • To assess behavioral changes using open-field tests.

    Main Methods:

    • Induction of zinc deficiency (1 ppm zinc) in experimental groups (ZDA).
    • Control groups included pair-fed (ZSP) and ad libitum-fed (ZSA) with adequate zinc (50 ppm).

    Related Experiment Videos

  • Evaluation of physical status and six open-field behaviors.

    • Main Results:

    • Significantly reduced food intake, body weight, and plasma zinc in both young and older deficient rats.
    • Lower exploration latency and ambulation scores in zinc-deficient rats of both ages.
    • Older deficient rats showed reduced grooming; young deficient rats exhibited less rearing and a 'kangaroo-like' posture.

    Conclusions:

    • Zinc deficiency causes significant physical and behavioral impairments in both young and older rats.
    • Young rats deficient during critical growth periods are at higher risk for most parameters.
    • Older, fully developed rats also experience substantial impairment from dietary zinc deficiency.