Serum testosterone of neonatal male and female dogs

Benjamin Hart, J. Ladewig

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Serum testosterone (T) was determined for male and female dogs from Day 2 (48-72 hr after birth) through Day 49. For the first 20 days of life, the T levels of both sexes were relatively stable and very low by adult male standards. The level for males was ~0.15 ng/ml and was significantly higher than that for females which was ~0.10 ng/ml. The levels for both males and females, however, may be so low postnatally that they are not biologically significant. If there was a'masculinizing' perinatal surge in T secretion in males, it undoubtedly occurred prenatally.

Original languageEnglish (US)
Pages (from-to)289-292
Number of pages4
JournalBiology of Reproduction
Volume21
Issue number2
DOIs
StatePublished - Jan 1 1979

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ASJC Scopus subject areas

  • Cell Biology

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