Posted on Saturday, September 01, 2007 - 07:26 am:
My mare was inseminated following P & E regimen. Timing seemed good. She has never come back into heat, was U/S at 15 days and 32 days, multiple >30 follicles present both times, no endometrial folds both times, but vet felt sure mare was not pregnant. I wanted further confirmation before using lutalyse. At 47 days post insemination, vet palpated, says definately not in foal, so I think it really must have been very EED and retained CL. I read that chances of pregnancy are less when recycling back with lutalyse after this. Is there any advantage to recycling once to get rid of present follicles and then waiting for the heat cycle to breed, or are my chances statistically the same on the first prostaglandin-induced cycle?
Posted on Wednesday, September 05, 2007 - 03:26 pm:
I am not aware of any reduced pregnancy rates - perhaps you could kindly point me to the research that indicates that?
If the CL has been retained, and PGF2a is used to successfully destroy the CL causing the mare to return to estrus, there would not appear to be any reason why there should be a lower pregnancy rate in that cycle.
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