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Could this cause problems

Equine-Reproduction.com Bulletin Board » Breeding Problem Mares - Volume 2 » Could this cause problems « Previous Next »


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names are labels
Neonate
Username: Alldun

Post Number: 1
Registered: 01-2007
Posted on Sunday, January 07, 2007 - 04:50 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I am looking at a mare that the vet has said releases 2 follicles at the same time from the same ovary. He said he has never seen this behavior before and could be an issue for breeding. This mare is 9 years old, never had a foal and when in heat is a handful.
Have you heard of this and has it posed a problem?
 

Charlotte
Neonate
Username: Flybynite

Post Number: 6
Registered: 04-2006
Posted on Sunday, January 07, 2007 - 10:53 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

sure. my mare did the same thing last breeding season. As I understand it, double ovulations are more common in some breeds (like drafts and thoroughbreds, my mares a TB), is more common on open mares than those with a foal at their side, and more common early in the breeding season.

As far as being a problem, well it means you got two chances at getting a fertilized egg, i see that as a benefit. But you also might get twins, hence the need for ultrasounding to check before 28 days (I u/s at 14 days, then again before 28 as necessary anyway). I do that anyway, so Im not real concerned with a double ovulation. What exactly was your vet concerned about?

Hopefully Jos can swing by and correct any mistakes I made.
 

Jos
Board Administrator
Username: Admin

Post Number: 1131
Registered: 10-1999
Posted on Monday, January 08, 2007 - 11:22 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

If your veterinarian has never seen two follicles ovulating, he has not seen many mares. It is perfectly common with as many as 30% of mares double-ovulating. It is not an issue for breeding. It actually increases the chances of conception, but does - as noted by Charlotte - present the possibility of twinning, and additional evaluation should be performed accordingly. We always recommend ultrasounds at 15 and no later than 28 days anyway (regardless of there being a double ovulation or not) in order to detect twins.

I really don't understand why your veterinarian would have presented this as a problem. If they genuinely did, and also said - as you suggested - that they had never seen or heard of this before, you may want to consult with a different vet for your breeding work.



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