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Post Culture Issue

Discuss all kinds of problems encountered in breeding mares from not standing for live cover, through to not getting pregnant for unknown reasons!

Moderator: Jos

Post Culture Issue

Postby UnoMas » Mon Jun 22, 2015 12:16 pm

I have been trying to get a mare bred this year that has been a problem. She has a tipped vulva so we knew that we would need a caslicks. After we bred her we saw an embryo and had the caslicks done. At the next pregnancy check she was open. She was taken to the vet who did a culture. He noticed that there was a bit of adhesion making it difficult to get the pipette into the cervix. He broke some of that up and ultrasounded the mare. He didn't note anything unusual. The culture came back clean. When I re-checked the mare a week later her uterus was full of fluid. Any thoughts as to what could be going on? When both the vet and I checked her no pregnancy was seen even though the mare should have been 25-30 days bred.
UnoMas
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Re: Post Culture Issue

Postby Jos » Tue Jun 23, 2015 9:53 am

I'm struggling a bit to sort out your time line.

The mare was checked in foal, then not (at what point?), then had a culture performed (was the mare in estrus?), then a week later had uterine fluid?

If the above is correct, in order to determine a possible scenario, we need to know if the mare was in estrus or not at the time of the swabbing. If either not in estrus, or in early estrus, then it is likely that the subsequent fluid seen a week later is related to fluid pooling associated with estrus. It could also be an indication of urine pooling.

Another question also arises regarding the "clean" uterine swab culture result - was there a cytology smear created and read which supported that result? (See our article about the importance of a cytology smear for more details - follow that link).

A final question would be related to the possibility that the mare was in diestrus at the time of the swab being performed, which if the case would have required the swab to be passed through a diestrus cervix, which would (should!) have been tightly closed rather than subject to adhesions.

From the above, if I have the time-line about right, I would have to suspect endometritis to be the cause of the pregnancy loss. This may be as a result of an unidentified pathogenic presence in the uterus, but it probably more likely, given the uterine fluid presence, as a result of delayed uterine clearance following breeding which led to a low-grade endometritis. Our article about pre-breeding evaluations may prove of assistance.
We're always happy to try and help, but don't forget to check the articles section
of the website too, which has a search engine to help you look for answers!
:)
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Jos
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