Peripheral concentrations of immunoreactive inhibin during pregnancy and parturition in the ewe [sheep]
1991
Findlay, J.K. | Doughton, B.W. | Russell, D.L. (Prince Henry's Inst. of Medical Research, South Melbourne (Australia))
In experiments on 15 ewes, progesterone (Pr) increased across pregnancy with higher levels in ewes with 2 fetuses than in those with 1 fetus, and Pr fell before birth. Immunoreactive inhibin (ir-I) remained stable for the first 40 days of pregnancy then fell until day 80 and remained low until 2 days before parturition when concentrations rose sharply, peaking at or around the day of birth for all ewes. Thereafter, ir-I fell and remained low or undetectable for up to 10 days. The sex of the fetus did not appear to have an influence.
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