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Can mare be incompatible with a stallion's semen?

Equine-Reproduction.com Bulletin Board » Breeding Problem Mares - Volume 2 » Can mare be incompatible with a stallion's semen? « Previous Next »


Author Message
 

carole whelan
Weanling
Username: Milmom

Post Number: 25
Registered: 05-2007
Posted on Tuesday, October 13, 2009 - 01:18 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I have bred my mare 2 season's using live cover. Each time, she has filled with fluid and had to be lavaged and treated w/antibiotics. After the each incident,she was checked for fluid following treatment and normal cycling and was clear. This last time, she was cultured after treatment- all clean. She was biopsied - grade 2A: "50 to 80% chance of normal pregnancy". The tentative plan for next year is to collect the stallion as if for fresh shipment and monitor my mare with U/S to aim for one insemination. My question is, can this mare be having a reaction to the particular stallion? Is it reasonable to suspect this and perhaps consider another stallion?
 

Samantha
Breeding Stock
Username: Dressage_diva333

Post Number: 867
Registered: 02-2008
Posted on Tuesday, October 13, 2009 - 03:53 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Perhaps try AI? I think it's possible, but it's very rare... Jos probably can tell you more about it.
 

Jos
Board Administrator
Username: Admin

Post Number: 2638
Registered: 10-1999
Posted on Tuesday, October 13, 2009 - 05:18 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

The most likely reason for the situation you are describing is that the mare has a common condition called "delayed uterine clearance". This is in many cases easily dealt with by the use of an oxytocin protocol, possibly coupled with lavages in the more severe cases.

Certainly a minimum contamination breeding such as you describe would be beneficial, but it would be likely to still require additional treatment such as the use of oxytocin.
 

carole whelan
Weanling
Username: Milmom

Post Number: 26
Registered: 05-2007
Posted on Tuesday, October 13, 2009 - 07:44 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I understand the oxytocin protocol, but the only repro vet available to me believes that oxytocin should not be used immediately (4 hours post breeding) because it could create a "false" impression of the uterous being clear when there is actually a fluid retention problem. This seems to contradict the information provided at this site and elsewhere.
Not administering the oxytocin as per protocol seems to invite fluid retention problems in the DUC mare.
 

Jos
Board Administrator
Username: Admin

Post Number: 2639
Registered: 10-1999
Posted on Wednesday, October 14, 2009 - 05:19 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Your vet's philosophy is flawed. DUC is a physical failure of the uterus to clear. The oxytocin causes the contractions to overcome the failure. Uterine fluid presence and clearance is not a "cause and effect" situation (i.e. it's not the mare's system thinking "I've got fluid so my uterus needs to contract").

Working on that principle, your vet should not be using anti-inflammatories like 'bute on lame horses or Banamine on colicking horses, as it masks the symptoms...

If what you write is indeed what your vet thinks about post-breeding oxytocin use, [s]he's not a repro vet. Find another who is (at least if you want any pregnant mares).
 

carole whelan
Weanling
Username: Milmom

Post Number: 27
Registered: 05-2007
Posted on Friday, October 16, 2009 - 11:13 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Thanks Jos, for the unequivocal response. My old vet used to just give me the bottle of oxtocyn at her cost and let me take care of it, but alas she has moved away. I'll have to see if somebody else will call in a oxytocin subscription for me so I can follow the correct protocol.



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