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Endocrine-nutrition interactions in birds
1Department of Animal Sciences, Rutgers, The State University of New Jersey, New Brunswick 08903.
The Journal of Experimental Zoology. Supplement : Published Under Auspices of the American Society of Zoologists and the Division of Comparative Physiology and Biochemistry
|January 1, 1990
Summary
Avian models, especially chickens, are valuable for studying how nutrition affects endocrine systems. Research shows nutritional deficiencies significantly alter key hormones like triiodothyronine (T3), thyroxine (T4), and insulin-like growth factor I (IGFI).
Area of Science:
- Comparative Endocrinology
- Nutritional Physiology
- Avian Biology
Background:
- Avian models, particularly chickens, are widely used to investigate nutritional impacts on endocrine function.
- Chickens offer unique advantages for studying specific endocrine interactions due to their physiology.
Purpose of the Study:
- To review the utility of avian models, with a focus on chickens, for exploring nutrition-endocrine relationships.
- To highlight how nutritional status influences critical hormones and endocrine gland function in chickens.
Main Methods:
- Review of existing research on nutritional interventions (fasting, protein, calcium deficiency) in chickens.
- Analysis of endocrine status changes in response to dietary manipulations.
Main Results:
- Fasting and protein deficiency significantly alter the triiodothyronine (T3)/thyroxine (T4) ratio.
- Protein deficiency impacts insulin-like growth factor I (IGFI) and growth hormone (GH) levels, and enhances adrenocortical cell responsiveness.
- Chickens are suitable models for diabetes research, pancreatic function, and growth hormone effects on adipose tissue.
Conclusions:
- Chickens serve as a robust model for understanding fundamental nutrition-endocrine interactions.
- The unique physiology of chickens, including their high calcium demands, makes them ideal for studying reproductive nutrition and endocrine regulation.
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