I have a 10 year old mare, that has never foaled, the owner said she is not producing follicles. What can be done , if anything to get a foal out of this mare.............
Posted on Wednesday, May 29, 2002 - 04:01 am:
How did the owner come to this conclusion? Is the owner a repro. specialist? I would suggest that you have an ultrasound and uterine biopsy done by a qualified veterinarian. That should give you a good start.
Posted on Thursday, May 30, 2002 - 11:43 am:
She did she a specialist, that was the conclusion.....
Posted on Thursday, May 30, 2002 - 12:00 pm:
There are several reasons why your mare may not be producing follicles, some of which are "fixable", and one which is not.
The evaluation should have included observation about the size of her ovaries and reproductive tract. If these were considered "normal", then it is unlikely that this condition I am about to mention would apply. If on the other hand the ovaries were small (pea-sized) then it is possible that this mare is an "intersex" mare, with a slightly off-normal chromosomal make-up. If this is the case, the condition can be confirmed by karotyping, and it is irreversible.
The next point to consider is if your is in winter anestrus still - although it is late for that and some degree of cyclicity should be evident. Have you confirmed that the mare is indeed not cycling? Have you run a progesterone assay? If not, you should run one, and if there is no progesterone present, run another in 10 days to confirm that there truly is no cyclicity. Note that not seeing estrus is insufficient to confirm that. In the event that there is progesterone present, your mare is producing follicles and ovulating, but the ovulations are being missed.
Next would be a total thyroid assay to rule out problems with low levels. In the event that this is an issue, supplementation can make a distinct difference.
There are many other things that can be looked at too, but this would be a good start.
Posted on Friday, May 31, 2002 - 10:01 am:
Thank you very much, I will start there.........
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