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Horm Metab Res 1991; 23(10): 469-472
DOI: 10.1055/s-2007-1003731
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© Georg Thieme Verlag, Stuttgart · New York

Food Intake After Hatching Inhibits the Growth Hormone Induced Stimulation of the Thyroxine to Triiodothyronine Conversion in the Chicken

V. M. Darras1 , A. Vanderpooten1 , L. M. Huybrechts1 , L. R. Berghman2 , E. Dewil1 , E. Decuypere3 , E. R. Kühn1
  • 1Laboratory of Comparative Endocrinology, K. U. Leuven, Leuven, Belgium
  • 2Laboratory for Neuroendocrinology and Immunological Biotechnology, K. U. Leuven, Leuven, Belgium
  • 3Laboratory for Physiology and Immunology of Domestic Animals, K. U. Leuven, Leuven, Belgium
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Publication History

1990

1991

Publication Date:
14 March 2008 (online)

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Summary

The effect of a single injection of 10 μg chicken GH on circulating thyroid hormones as well as in vitro liver 5'-monodeiodination (5'-D) activity was studied in posthatch chicks submitted to different feeding conditions. One group was normally fed after hatching, a second group was only fed after three days and a third group was food deprived after 2 days of feeding. Combination of all results indicates that the start of food intake abolishes the stimulatory effect of a GH injection on circulating T3 and liver 5′-D activity. Food deprivation after a period of food intake restores the GH effect on plasma T3 but not on liver 5'-D.

Key words

Chicken - Thyroid - 5'-D - GH - Fasting