Discussion on Mare will not go out of heat
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| Author |
Message |
    
gary stalberger (Garyst)
| | Posted on Monday, May 20, 2002 - 8:58 pm: |   |
We have a mare who will not go out of heat this year. We have been hand breeding for 35 days now. On the advice of our vet we gave her 3,3000 units of HCG IM ten days ago. She is still breeding today. Our vet is now recommending 10,000 units of HCG I.V. Would this be a standard practice protocol? (He has not recommended palpation or ultrasound) Any other sugestions? |
Robert N. Oglesby DVM (Dro)
| | Posted on Tuesday, May 21, 2002 - 7:21 am: | |
Hello Gary,
I would like to know the age of this mare, in months. I have heard of doses this high but do not know any work to suggest it is more effective than the more typical doses. IV use, large doses, and prior exposure all increase the chance of a systemic immune reaction but the actual risk is unknown to me and probably low but not 0. Neither can I assess the chance this might work. If you have a persistant follicle that is receptive to the HCG it might.
He needs to get out there and examine this mare as there are several possiblities including:
1) Mare shows behavorial estrus though she is out of heat, maybe even pregnant. I heard somewhere however that intromission can cause abortion early in the pregnancy by overstimulating the cervix and causing prostaglandin release. I do not know if this is true.
2) Persistant or repeated follicular development.
3) Hormone secreting tumors on the ovaries.
4) Uterine infection.
It will probably take repeated examinations, best including an ultrasound, and possibly hormonal studies to figure this out.
DrO |
deborah smith
New Member
Username: Elmore
Post Number: 1
Registered: 4-2004
| | Posted on Monday, Apr 12, 2004 - 12:22 pm: | |
I Have a 3 year old pacing filly that just came into heat and will not come out. This is the first time she has come into heat.Being in heat all the time has effected her training. I would like to know how to bring her out of heat and what medication to use. |
Christos Axis
Member
Username: Christos
Post Number: 361
Registered: 11-2003
| | Posted on Monday, Apr 12, 2004 - 1:16 pm: | |
Hi, Gary,
We have a 10yo mare that is receptive to stallions all the time, all year round, even during pregnancy.
She has successfully and uneventfully foaled four healthy ones, though she was covered twice during pregnancy.
She's a very demanding horse (a bitch to handle), as she won't forgive the tiniest mistake from the ground or under saddle, but a really tough and honest worker and a magnificent mother, so we chose that we live with her temperament and leave her hormones alone.
|
Robert N. Oglesby DVM
Moderator
Username: Dro
Post Number: 10267
Registered: 1-1997
| | Posted on Wednesday, Apr 14, 2004 - 10:29 pm: | |
Deborah,
I suspect she may be transitional and likely she will go out of heat any time now, for more on this see Equine Reproduction » Breeding and Foaling » Breeding Patterns in Mares and Stallions. If you wanted to try something you could go through a 14 day course of Regumate and then take her off of it. She might then come into a normal heat that quits within a week, for more see Equine Reproduction » Breeding and Foaling » Stimulating Mares to Cycle Early.
DrO |
