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Strange cL -- thoughts needed!

Equine-Reproduction.com Bulletin Board » Breeding Problem Mares - Volume 2 » Strange cL -- thoughts needed! « Previous Next »


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Paradise
Nursing Foal
Username: Paradise

Post Number: 12
Registered: 03-2006
Posted on Wednesday, August 27, 2008 - 07:40 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I think we are having the worst breeding season ever.

End result, we have one breeding that must be used before the end of the year and one very uncooperative mare.

11 year old, biopsy score 1, clean culture & cytology but she was severely depeleted by her March 2008 filly.

We missed on the 30 day heat and then we had 1 cycle of failure to catch, followed by a missed ovulation, followed by a failure to catch - this time with fluid. This led to a round of re-testing and again we came up with a clean culture and cytology.

This brings us to last week. Without manipulation on a natural cycle, the mare had a 50mm firm and round follicle on Thursday, so we ordered semen. When the semen arrived on Friday, the follicle had regressed to 37mm, still presenting round. We inseminated and gave an hcG shot and followed breeding with the oxytocin protocol. Saturday the follicle was 35mm, we repeated the insemination and again followed the oxytocin protocol.

Sunday morning, I was at work, but the Vet told me he "thought" he saw a cL but he was unsure. There appeared to be a darkish mass in what he thought was the cL. He reported that the mare's uterus was "hot" with good edema and no fluid.

Monday the mare's uterus was less "hot" the mystery cL with the dark mass in it was still there, there was no fluid and we figured we would wait the 14 days for a pregnancy check.

Could this be OK? Is there any chance we may have caught her? What is with the cL with the dark mass in it? Are regressing follicles still fertile?

And (in a very feel sorry for me moment) isn't it evil to make me keep going this time of year (stallion owner want another stud fee - less booking - to extend to Spring)?
 

Jos
Board Administrator
Username: Admin

Post Number: 2151
Registered: 10-1999
Posted on Thursday, August 28, 2008 - 02:16 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Without images, it is difficult to offer an opinion, but here's a couple of comments...

Uterine edema should have regressed and (hopefully) disappeared by the time of ovulation, so the fact that your vet was observing "good edema" on the Sunday morning, in conjunction with what he thought might be a CL is possibly not good.

If there is distinctly echoic tissue visible within the ovary (presenting as a definitive grey area), that is suggestive of the CL. A dark (i.e. anechoic) area within an echoic area is suggestive of a CH still present within the confines of the CL, or in other words some residual blood in the center of the CL - not unusual.

Regression from 50 to a 35 is quite dramatic and possibly not normal, but may have been because the mare was in the process of ovulating - which would be normal.

The only other concern that you might have is the possibility of an anovulatory hemorrhagic follicle.

But as you say... you'll know better in 14 days or so...



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