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Horm Metab Res 1990; 22(5): 261-264
DOI: 10.1055/s-2007-1004898
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© Georg Thieme Verlag, Stuttgart · New York

Variations in Somatomedin-C/Insulin-Like Growth Factor-I Associated with Environmental Temperature and Nutrition

M. J. Dauncey1 , R. A. Shakespear2 , B. T. Rudd2 , D. L. Ingram1
  • 1AFRC Institute of Animal Physiology and Genetics Research, Babraham, Cambridge
  • 2Department of Clinical Endocrinology, Birmingham and Midland Hospital for Women, Birmingham, United Kingdom
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Publication History

1989

1989

Publication Date:
14 March 2008 (online)

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Summary

The influences of environmental temperature and energy intake on plasma concentrations of somatomedin-C/insulin-like growth factor-I (IGF-I) have been investigated in young growing pigs. After 10 weeks acclimation, IGF-I was significantly greater at 35 than 10 °C (P < 0.001) and on a high than a low energy intake (P < 0.001). During the period 16-26 h after the last meal, there was a significant decline in IGF-I with time (P < 0.01). These results can be explained partly in relation to differences in energy exchange in warm and cold environments and may also be related to changes in growth and thyroid hormones.

Key words

Somatomedin - Growth Hormones - Thyroid Hormones - Energy Intake - Temperature