The effect of multiple PGF treatment during early dioestrus on luteolysis and pregnancy rate in the mare

Effect of the administration of alfaprostol 3 or 6 days after ovulation in jennies: ultrasonographic characteristic of corpora lutea and serum progesterone concentration

“…These results are more similar to what reported in the mare, where administration of the PGF analogue dinoprost trimethamine at day 3 after ovulation, after an initial [P4] decrease resulted in 3 response groups: with [P4] major resurgence (6/16), with [P4] minor resurgence (6/16), and with no [P4] resurgence (4/16) 14 . Similarly, it was reported that several PGF administration are needed to induce complete luteolysis before the fifth day after ovulation, in the mare 36,37 . Differences in luteolytic effect of the two different PGF analogues, or the breeds of jennies studied, could be responsible of the different results between alfaprostol, used in this study, and cloprostenol 16,17 , when employed 3 days after ovulation.…”