Hot shotting mares that havent started cycling yet
Have a mare in for breeding that has been here for just under a month now
She has a hair coat on her like a water buffalo, lived outside prior to coming here, was not under lights at all.
The client wants her bred asap
She lives across from 2 stallions inside at my place and is outside 8 feet away from them all day long. They ignore her and she totally ignores them. If they share the same corners of their paddocks, its to sleep in the sunbeams. If they walk by her in the barn or she walks by them there is "0" interest from anyone. Safe to say she has not gone through her transitional cycle yet and is not breedable
When the vet was here last week, I asked about hot shotting her and he didnt recommend it this early in the season. Every other vet that I have used has said the same thing - that in many cases it can have the opposite effect
Got a call from the client this morning and he said the breeding farm where he keeps his mares has been hot shotting the mares 4-5 days ago - maidens and career broodmare alike - and they are now cycling and on their way to Kentucky to get bred and he has asked that she be hot shotted as well
Its his mare and his decision - but for those that have tried this, this early on under the same circumstances - has hot shotting them worked?
Sure, you could hot shot her, but who knows if it would work.
Prostaglandin would only work on an active CL. CLs are non-existent during the anestrus phase since they only come about after the ovulation of a follicle. So, giving PG to a mare in vernal transition would do diddly unless she had already transitioned into the normal ovulatory phase.
For the mares that it "worked" on, did anyone actually u/s them? Both transition phases are characterized by erratic heat behaviors due to the rapid growth and regression of follicles at this time. Just because a mare is exhibiting heat behavior does not mean that she is actually ready to breed. Until someone actually sees a beautiful >35mm follicle, I would not call the mares in viable estrus yet. Even edema and cervical relaxation can be misleading during the transition periods.
ETA: If the broodmares at the breeding farm are under lights, they cycles could already be through the transition phase since the hormone needed to start the estrous cycle would have been able to get the ball rolling sooner. The mares under lights where I am are already starting to get bred to while the ones that were not under lights are either completely erratic with their heats or no heat at all.
SuZ - didnt ask specifically on the mares that are on their way to KY if they had been U/S'ed or not, but was told that they are now "teasing in" to the teaser stallion and are on their way to the breeding farm. So - who knows if once they get there they find it was a false alarm and they are not breedable at all
It was never stated that "they were ultrasounded and are now ready to breed" just that they were hot shotted and are now teasing to the stallion and are on their way
And thats what I have kept telling him as well - if there is nothing there to "progress" the Lute or Estrumate will not make a follicle magically appear out of nowhere, but the breeding manager at the other farm appears to feel differently ...