would like opinions here: I have a 5yo WB mare who is nursing her first foal. She is healthy, good weight, etc. We have tried 3 times to breed her this year. Timing was good, semen was very good. She is coming in to season by day 16 post ovulation (FAST). We checked her Friday on day 15 and she had a 45 mm follicle! Vet and I feel she doesn't want to get in foal while she is nursing. We are going to try ONE more time (arrrgg!) and I will put her on regumate on day 4 post ovulation. My vet thinks she has a high estrogen count and low progeterone. She has cultured clean. Is it worth another try? I know of several other mares with the same problem and the owners have tried regumate with no help.
We have had mixed results with using regumate in "wet mare" breedings. One mare in particular brings up waves of follicles and either ovulates very small or doesn't ovulate. I think next time we are in that situation we will try P&E, which might be a little more reliable and sorting out what is going on with the mares' systems.
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