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Horm Metab Res 1975; 7(5): 429-432
DOI: 10.1055/s-0028-1093699
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© Georg Thieme Verlag KG Stuttgart · New York

Plasma Immunoreactive Calcitonin Levels in Pregnant Mares and Newborn Foals

J.-M.  Garel1 , W.  Martin-Rosset2 , J.-P.  Barlet2
  • 1Laboratoire de Physiologie Comparée, Université Paris VI , 9, quai St Bernard, Paris Cedex 05
  • 2I.N.R.A. Theix, Beaumont, France
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Publication History

Publication Date:
23 December 2008 (online)

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Abstract

Plasma calcium and calcitonin levels were measured periodically during the two last months of pregnancy and at the time of parturition in 9 pregnant mares and their foals. In pregnant animals, there was an increase in plasma calcitonin levels in the days before parturition, which was not due to any change in plasma calcium. This result indicates that in the mare, as in the cow, in the days before parturition CT secretion escapes from its control by plasma calcium.

In 0-day and 7-day-old foals plasma calcium levels were significantly higher than in their mothers, but plasma calcitonin levels were not significantly different from those observed in their dams at the time of parturition.

Key words

Calcium - Calcitonin - Horse - Newborn - Pregnancy - Parturition