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Maiden mare - no foal 3 years

Equine-Reproduction.com Bulletin Board » Breeding Problem Mares - Volume 2 » Maiden mare - no foal 3 years « Previous Next »


Author Message
 

Katherine Stelter
Neonate
Username: Qhkat

Post Number: 6
Registered: 11-2011
Posted on Friday, April 27, 2012 - 01:10 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Background on this mare: 8yo maiden QH mare. Good body condition. Has been bred at owner's farm with shipped semen 5 times over last 3 years (2x first 2 years, once this year), then brought to breeding farm. Clean culture. First cycle at farm was transitional. Small follicle (ovd @ 28mm), no teasing, no edema, cervix not open/softened at all. Didn't breed that cycle.
Gave prostin at 7 days post ovn. Came back in heat, teased well, great cycle. Came up with a 26 and 24mm follicle on a Monday US, bred Wednesday, had 2 clean ovns on Friday US. No fluid on Mon or Fri US. Bred Wednesday with that day's collxn @ 90%. Did a post-breeding lavage 6 hrs. post-breeding with 1L Ringer's (thinking she might be having inflammatory response to shipped semen in previous breedings). Followed with oxytocin every 6 hrs. for 24 hrs. 16 check - no foal.
Vet brought up possibility of having clogged oviducts, but said that's rare. Recommended, based on history, starting Regumate 5 days post-ovn this cycle, along with eod dexamethasone. Said he's had good luck with the combo. If she doesn't get in foal this cycle, I guess we'll move forward with an endoscopic exam to identify/eliminate any other physiological, structural issues. Any other ideas we might try before going that far?
 

Jos
Board Administrator
Username: Admin

Post Number: 3531
Registered: 10-1999
Posted on Friday, April 27, 2012 - 07:54 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

What did the cytology show? Was there even one done in conjunction with the culture? (Follow that link for details).
 

Katherine Stelter
Neonate
Username: Qhkat

Post Number: 7
Registered: 11-2011
Posted on Friday, April 27, 2012 - 08:42 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Sorry Jos. Meant to write that cytology was negative too.
 

Jos
Board Administrator
Username: Admin

Post Number: 3532
Registered: 10-1999
Posted on Friday, April 27, 2012 - 09:06 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Was the same stallion used for all breedings? Has she ever been bred to a different stallion?
 

Katherine Stelter
Neonate
Username: Qhkat

Post Number: 8
Registered: 11-2011
Posted on Sunday, April 29, 2012 - 02:16 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Two different studs the first two years. This year we shipped to her at owner's farm the end of February. Not in foal at 16 days. Brought her to farm and we bred her here. Not in foal on second cycle (first cycle after bringing her was not very good). Stallion's TCS pregnancy percentage is in the neighborhood of 95%+ on first shipment. We're 3 for 5 on at-farm mares, but I have to deal with some geriatric mares that have issues. So definitely not the stud - this one at least :-)
 

Jos
Board Administrator
Username: Admin

Post Number: 3533
Registered: 10-1999
Posted on Sunday, April 29, 2012 - 06:22 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Was thinking more of antisperm antibodies, which would be more likely in the event that only one stallion had been used, and less likely seeing as there were two.

I think if she were mine, and presuming all other factors to which I am not privy are OK, I might try either an endometrial biopsy and/or karyotyping next.

Blocked oviducts are less likely (although not impossible) as typically the blockages are caused by a build-up of decaying oocytes, which is less likely to be an issue in a young mare.
 

Katherine Stelter
Neonate
Username: Qhkat

Post Number: 9
Registered: 11-2011
Posted on Monday, April 30, 2012 - 08:47 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Thanks Jos! never even thought about karyotyping! Will run this all by vet. Hopefully she's in foal this cycle, but we have a jumping-off point if she's not :-)
 

Katherine Stelter
Nursing Foal
Username: Qhkat

Post Number: 11
Registered: 11-2011
Posted on Wednesday, May 16, 2012 - 07:38 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Just wanted to update this post. We just checked this mare in 15 days in foal yesterday! She continues to be on the EOD 5mL Dexamethasone IV and she is on Regumate (we pulled blood to test her level yesterday). We're not sure if it was the Dex, the Regumate, or the combo, but something worked :-)
 

Jos
Board Administrator
Username: Admin

Post Number: 3549
Registered: 10-1999
Posted on Wednesday, May 16, 2012 - 10:07 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Congratulations. The positive response to Dex suggests that she was having a major breeding-induced inflammatory response, so it might be worth bearing that in mind for the next time and checking for it.



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