Progesterone and oestrogen concentrations in plasma of Barbary sheep (aoudad, Ammotragus lervia) compared with those of domestic sheep and goats during pregnancy.
Steroid hormone concentrations have been measured in the peripheral plasma of 3 Barbary sheep over 3 breeding seasons. During pregnancy mean progesterone values rose initially and after a small decline between Days 30 and 50, increased again and remained between 17 and 28 nmol/l until the last 2 days of pregnancy. Oestradiol-17 beta reached a peak of about 300 pmol/l during mid-pregnancy, increasing to over 400 pmol/l in the last 5 days of pregnancy. Oestrone sulphate began to increase in concentration from about Day 40 of pregnancy and reached a peak of about 19 nmol/l by Day 120. Following a slight decrease from Day 130, there was a further rise in values just before parturition. Values for these steroids in the Barbary sheep studied were between those expected for domestic sheep and goats.
Hamon
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MH
AFRC Institute of Animal Physiology and Genetics Research, Babraham, Cambridge, UK.
Heap
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RB
D000818:Animals; D004958:Estradiol / Q000097:blood; D004967:Estrogens / Q000097:blood*; D004966:Estrogens, Conjugated (USP) / Q000097:blood; D004970:Estrone / Q000031:analogs & derivatives / Q000097:blood; D005260:Female; D006041:Goats / Q000097:blood; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000097:blood*; D011374:Progesterone / Q000097:blood*; D012756:Sheep / Q000097:blood*
D004967:Estrogens; D004966:Estrogens, Conjugated (USP); D004970:Estrone; D011374:Progesterone; D004958:Estradiol; C017296:estrone sulfate