Concentrations of progesterone, a metabolite of PGF2α, prolactin, and luteinizing hormone during development of idiopathic persistent corpus luteum in mares

In experiment 1, daily blood samples were available from days 0 to 20 (day 0 = ovulation) in mares with an interovulatory interval (IOI, n = 5) and in mares that developed idiopathic persistent corpus luteum (PCL, n = 5). The PCL was confirmed by maintenance of progesterone (P4) concentration until end of the experiment (day 20). Significant interactions of group and day revealed the novel findings that luteinizing hormone (LH) was lower (P < 0.05) in the PCL group than that in the IOI group on days 0 to 4, and prolactin was lower (P < 0.05) on days 1, 4, 6, and 7.

Source: Domestic Animal Endocrinology - December 27, 2015 Category: Endocrinology Authors: O.J. Ginther, J.M. Baldrighi, T. Castro, C.A. Wolf, V.G. Santos Source Type: research