Serum Testosterone of Neonatal Male and Female Dogs1
- 1 September 1979
- journal article
- research article
- Published by Oxford University Press (OUP) in Biology of Reproduction
- Vol. 21 (2) , 289-292
- https://doi.org/10.1095/biolreprod21.2.289
Abstract
Serum testosterone (T) was determined for male and female dogs from Day 2 (48-72 h 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.This publication has 5 references indexed in Scilit:
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