Androgens in fetal pigs in relation to sex of neighbour(s)

Zentralblatt für Veterinärmedizin. Reihe A
T FramstadW Velle

Abstract

Concentrations of androgens in blood and/or fetal fluids were determined in pig fetuses 35, 56/58 and 115 days of age. For each fetus the sex of its neighbour(s) in utero was determined. Irrespective of the sex of neighbour(s), no significant differences in testosterone levels were found between the different groups of females, or between the different groups of males. When females and males were compared, significant differences were found. At a fetal age of 35 days testosterone concentrations (mean and SD) in amniotic fluid were 0.17 +/- 0.06 and 0.26 +/- 0.05 nmol/l in females and males, respectively (p less than 0.01). At a fetal age of 56/58 days, the corresponding values were 0.14 +/- 0.04 and 0.21 +/- 0.07 nmol/l (p less than 0.01). At this age testosterone concentrations in mixed umbilical blood plasma were 0.22 +/- 0.08 in females and 1.12 +/- 0.64 nmol/l in males (p less than 0.001). At term the mean concentrations of testosterone were 2.4 and 2.5 nmol/l in mixed umbilical blood plasma and 1.6 and 1.7 nmol/l in fetal fluid in females and males, respectively. The levels of dehydroepiandrosterone in fetal fluid at this stage were 1.6 nmol/l in females and 1.7 nmol/l in males. Concentrations of dihydrotestosterone were b...Continue Reading

References

Nov 1, 1979·Biology of Reproduction·J I Raeside, A T Middleton
Jul 1, 1978·Journal of Reproduction and Fertility·B ColenbranderC J Wensing
Oct 1, 1975·Journal of Steroid Biochemistry·D H Segal, J I Raeside
Oct 1, 1975·Biology of Reproduction·J I Raeside, D M Sigman

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Citations

Apr 28, 2018·Journal of Animal Science·Jemma SeyfangCameron R Ralph

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