Download PDF
Horm Metab Res 1987; 19(5): 194-196
DOI: 10.1055/s-2007-1011776
ORIGINALS

© Georg Thieme Verlag, Stuttgart · New York

Developmental Patterns of Thyroid Hormones and Testosterone in Ferrets

R. Kästner, D. Kästner, R. Apfelbach
  • Institut für Biologie III, Universität Tübingen, Tübingen, Germany
Further Information

Publication History

1986

1986

Publication Date:
14 March 2008 (online)

Also available at
  PDF Download  Permissions and Reprints

Summary

Plasma levels of thyroxine (T4) and triodothyronine (T3) were measured in male and female ferrets at regular intervals between postnatal day 20 and 150 as well as in adult animals. In addition, testosterone level in male ferrets was measured. All hormones showed characteristic developmental patterns. There is a T4 maximum prior to a T3 maximum in subadult animals which in both cases surpasses adult levels.

Testosterone level shows a different developmental pattern. There is an outstanding peak in subadult males around day 60-80, which, however, is surpassed by adult levels during the mating season.

Key-Words

Age - T3 - T4 - Testosterone - Ferret

      >