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How long does a mare stand for covering after she has ovulated?

Equine-Reproduction.com Bulletin Board » General Mare Questions - Volume 3 » How long does a mare stand for covering after she has ovulated? « Previous Next »


Author Message
 

Ashleigh Coleman
Neonate
Username: Ashleigh

Post Number: 2
Registered: 11-2010
Posted on Tuesday, November 09, 2010 - 12:05 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

The heading basically says it all. I've heard 24 hours, but would like to hear from people who have their mares scanned while in the breeding cycle? I'm sure, as with most things equine, it's never a definite time period, but a range would be nice:-)
 

Audrey Crosby McLellan
Yearling
Username: Accphotography

Post Number: 60
Registered: 10-2007
Posted on Tuesday, November 09, 2010 - 01:05 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Mine reaches her hottest at about 24 hours before she ovulates. Once she ovulates she seems to very quickly cool down and definitely appears out by 24 hours post ovulation.

Most people say their mares ovulate 24-48 hours before they tease out.
 

Jos
Board Administrator
Username: Admin

Post Number: 3051
Registered: 10-1999
Posted on Tuesday, November 09, 2010 - 09:37 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

  • Mares reject the stallion as a result of elevated levels of progesterone.
  • Progesterone is secreted by the Corpus Luteum ("CL").
  • The CL forms in the area evacuated by the ovulation of the follicle.
  • Progesterone levels start elevating typically upon formation of the CL but do not start to reach significant levels until greater than 12 hours post-ovulation.
  • In most mares progesterone levels that prevent receptivity to the stallion will not be reached until 24-48 hours after ovulation.
 

Ashleigh Coleman
Neonate
Username: Ashleigh

Post Number: 3
Registered: 11-2010
Posted on Thursday, November 11, 2010 - 10:26 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Thanks for the detailed info Jos. Is is purely ruled by hormones, or could there be an 'psychological' aspect to it, i.e. the mare stands a bit longer for the stallion simply because she likes him?
 

Jos
Board Administrator
Username: Admin

Post Number: 3057
Registered: 10-1999
Posted on Friday, November 12, 2010 - 10:07 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Hormones.



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