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Postweaning copper restriction and behavior in the Long-Evans rat.

B M Thorne, K N Lin, M L Weaver

    Pharmacology, Biochemistry, and Behavior
    |December 1, 1983
    PubMed
    Summary

    Copper deficiency in male rats led to enlarged hearts and reduced weight gain. Behavioral tests, including activity and memory, showed no significant effects from varying copper intake levels.

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    Area of Science:

    • Nutritional Science
    • Animal Behavior
    • Cardiovascular Physiology

    Background:

    • Copper is an essential trace element crucial for various physiological processes.
    • Dietary copper levels can impact growth, development, and organ function.
    • Understanding the behavioral consequences of copper deficiency is important for overall health assessment.

    Purpose of the Study:

    • To investigate the effects of different dietary copper levels on the behavior and physiology of Long-Evans male rats.
    • To determine if copper deficiency impacts specific behaviors such as aggression, activity, and learning.
    • To assess the relationship between dietary copper, heart size, and body weight gain.

    Main Methods:

    • Long-Evans male rats were fed low, marginal, or adequate copper diets from weaning.

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  • Body weight gain and heart size were measured.
  • A battery of behavioral tests was conducted, including muricide, open-field activity, water intake, shock sensitivity, and shock avoidance and memory.

    • Main Results:

    • Rats on the low copper diet exhibited significantly enlarged hearts compared to controls.
    • Reduced body weight gain was observed in the low copper group.
    • No significant treatment effects were found in any of the assessed behavioral parameters.

    Conclusions:

    • Dietary copper deficiency in rats significantly affects heart size and body weight.
    • Behavioral assessments in this study did not reveal significant alterations due to varying copper intake.
    • Further research may be needed to explore subtle behavioral or neurological impacts of copper deficiency.