
TY  - JOUR
A1  - Gill, JW 
A1  - Hosking, BJ 
T1  - Effects of prenatal steroid environment on fetal size and morphology in twin sheep
JF  - Australian Journal of Agricultural Research
JO  - Aust. J.  Agric. Res.
Y1  - 1996
VL  - 47
IS  - 8
SP  - 1315
EP  - 1322
KW  - sex;fetus;testosterone;differentiation;growth
UR  - https://doi.org/10.1071/AR9961315 
N2  - Twenty oestrous-synchronised, twin-bearing, 4.5-year-old Border Leicester x Merino ewes were randomly allocated to 2 treatment groups. At Day 60 post coitus, treated ewes were injected intramuscularly with a single 2 mL dose of testosterone propionate (100 mg/mL). Acute prenatal androgen treatment at 60 days post coitus increased female fetal growth to day 100 post coitus (P < 0.05) and individual cotyledon size (P < 0.01). Acute prenatal androgen treatment induced differential growth amongst major organs and increased ponderal index in ovine fetuses of both sexes (P < 0.05). The results indicate that sexual dimorphism in growth responses to changes in the animal's steroid environment occurs in early life and may be established or entrained well before puberty. 
ER  -

