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Related Experiment Videos

Developmental consequences of diet and activity

C Rovee-Collier1, G Collier, K Egert

  • 1Department of Psychology, Rutgers University, New Brunswick, NJ 08903.

Physiology & Behavior
|February 1, 1993
PubMed
Summary

Protein-deficient and protein-surfeit diets negatively impact White Leghorn chick growth and food intake. Activity wheel access did not improve growth, even with imbalanced protein diets.

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Area of Science:

  • Animal Physiology
  • Nutritional Science
  • Behavioral Biology

Background:

  • Dietary protein levels significantly influence animal growth and metabolism.
  • Behavioral thermoregulation in young birds is crucial for survival and development.
  • Activity levels can interact with dietary factors to affect physiological outcomes.

Purpose of the Study:

  • To investigate the effects of protein-deficient and protein-surfeit diets on food intake, growth, and body temperature in behaviorally thermoregulating White Leghorn chicks.
  • To determine if continuous access to an activity wheel mitigates negative effects of imbalanced diets.
  • To explore the relationship between diet, activity, body temperature, and a predation defense behavior (death feigning).

Main Methods:

  • Two experiments were conducted using White Leghorn chicks.

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  • Chicks were fed either a control, protein-deficient, or protein-surfeit diet.
  • Continuous access to an activity wheel was provided in some groups, while others served as inactive controls.

    • Main Results:

    • Both imbalanced protein diets depressed food intake and growth compared to the control diet.
    • Continuous activity wheel access did not improve growth or ameliorate the negative effects of high-protein diets.
    • Diet significantly affected body temperature in a cooler ambient environment, and these effects correlated with changes in spontaneous activity and death feigning behavior.

    Conclusions:

    • Imbalanced protein diets negatively impact chick growth and food intake, irrespective of activity levels.
    • Activity does not compensate for the detrimental effects of imbalanced protein diets on growth in these chicks.
    • Dietary manipulation influences thermoregulation, spontaneous activity, and antipredator behavior in young birds.