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 language | English (US) |
|---|---|
| Pages (from-to) | 289-292 |
| Number of pages | 4 |
| Journal | Biology of Reproduction |
| Volume | 21 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 1 1979 |
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ASJC Scopus subject areas
- Cell Biology
Cite this
Serum testosterone of neonatal male and female dogs. / Hart, Benjamin; Ladewig, J.
In: Biology of Reproduction, Vol. 21, No. 2, 01.01.1979, p. 289-292.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Serum testosterone of neonatal male and female dogs
AU - Hart, Benjamin
AU - Ladewig, J.
PY - 1979/1/1
Y1 - 1979/1/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0018731589&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0018731589&partnerID=8YFLogxK
U2 - 10.1095/biolreprod21.2.289
DO - 10.1095/biolreprod21.2.289
M3 - Article
C2 - 486656
AN - SCOPUS:0018731589
VL - 21
SP - 289
EP - 292
JO - Biology of Reproduction
JF - Biology of Reproduction
SN - 0006-3363
IS - 2
ER -