Hi. My mare was bred and checked in foal early at 11 days but had an estrus uterus 2+ edema and follicles (largest 30X45) on d20. The follicle grew to 50 then developed echogenic specs so I didn't breed on it. 2 days later it was 61 mm with a septation. And 4d after that (6d after the specs formed) it is 72 mm with multiple septations. The other ovary has small follicles and the uterine edema score is 0. Can't tell if luteal tissue around the hemorrhagic anovulatory follicle. I heard that giving low dose prostin for 3 days may help bring her in again. Is estrumate okay or do you need lutalyse? Any idea for optimal dose? The lutalyse dose is 0.2 cc IM daily for 3 days. Also, are HAF's associated in any way with EED? Or do I just have awful luck?}} Thanks for any advice.
If there is luteal tissue present, then a standard luteolytic dose of PGF2α or an analogue (Cloprostenol - Estrumate) will work to destroy it and create a return to estrus. If you are micro-dosing, then 2 consecutive days of PGF2α (Lutalyse/Prostin) or a single micro-dose of cloprostenol should be adequate.
Around 10% of cycles involve AHFs, and the actual cause is not understood, so it is unlikely that it is related to EED - or your luck for that matter!!
Note that one can use insulin syringes to do these micro doses, which makes it a lot easier with needle-shy (and other) horses.
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