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Trish Regard
Member
Username: Trishab
Post Number: 5
Registered: 12-2004
| | Posted on Tuesday, Apr 5, 2005 - 10:14 pm: |   |
I have a Thoroughbred mare who has been short cycled and refuses to drop her folicle. Here are the specifics of her case. She came to me with a 7day old foal. I began teasing her for her foal heat. She broke down on 3/11 and 3/12 (days 8 and 9 post foaling. I had her checked on 3/15 (day 12 post foaling) she had ovulated her foal heat folicle. On 3/19 she palped a R20 hard/medium. On 3/20 she palped a r30 medium with a 1 spec and and a so so tease. So we gave her a shot of prostin that evening. On 3/21 we gave her another shot of prostin. On 3/22 she palped a r40 medium and a spec of 2 with an edema of 2. She was bred on 3/23 and broke down at the shed. When she returned from the shed she was given Deslorelin. On 3/24 she still had the folicle so we gave her a shot of HCG. On 3/25 she still had the folicle. We doubled her on 3/26 and gave her another shot of Deslorelin. On 3/27 she was still holding on so we gave her another HCG shot. On 3/28 she began to regress to a 30 medium. Then on 3/30 to a 25 medium. We started her on thyro L, 2scps a day, and her folicle began to grow again. It progressed to a 45 soft but has yet to drop this folicle. My vet is testing her cortisol levels. Any thought as to what could be going on with this mare??
trish |
Little King Ranch
Member
Username: Eoeo
Post Number: 153
Registered: 10-2002
| | Posted on Wednesday, Apr 6, 2005 - 11:22 am: | |
That seems to happen when we try to screw with mother nature. It is early in the year for this type of procedure so we don't even try manipulating other than bringing them in to heat on a short cycle. Goes to show, the shots don't always work. We found that out too. Good luck. EO |
DEBRA WAWZYSKO
Member
Username: Dwawz
Post Number: 5
Registered: 6-2004
| | Posted on Wednesday, Apr 6, 2005 - 11:28 am: | |
Trish,
Very interesting. My TB mare last year did the same thing. I have always bred her every other year. Last year decided to breed back same year and had the same scenario as you did this year. I did not try again as it was mid summer already. My vet told me some mares need a bit more time after foaling than others. |
Robert N. Oglesby DVM
Moderator
Username: Dro
Post Number: 12489
Registered: 1-1997
| | Posted on Thursday, Apr 7, 2005 - 8:50 am: | |
Hello Trish,
At this time there is no reason to think that this is anything more than a fairly normal occurence this time of year. A follicle comes up and does not ovulate, wellcome to early Spring.
I question the use of thyroid hormone and cortisol studies in this case as presented above. Effective therapy for transitional behavior is a 14 day course of Regumate to help get her natural hormones built up and synchronized. Once pulled off I would expect a fairly normal though slightly prolonged cycle.
DrO |
