I have a 15 yr old TB brood mare,she had an inlarged horn,gave her shots to reduce fluid and shrink horn. Covered ( Clydsdale stallion) her next cycle,USed,confirmed PG.USed again at 60 days,found heart beat for about 5 seconds then couldn't find it again,even-tho Vet looked for about 15 mins! Vet had me bring her back 2 weeks later for re-US,we couldn't find fetus at all.She still has NOT cycled and acts PG.This is driving me crazy!!! Can anyone explain what is going on??
Anonymous Posted From: 188.8.131.52
Posted on Monday, July 28, 2003 - 11:21 am:
She may be going through a false pregnancy. Sometimes when a mare's body recognizes that it's pregnant, the hormones go into effect. Then if the foal is lost, the body still acts like it's pregnant. It can take a while for her body to return to a normal cycling pattern, possibly as long as next spring. I believe there are drugs you can use to stimulate the mare's body into acting like it's not pregnant, but she still may not cycle normally for a while.
KarenS Posted From: 184.108.40.206
Posted on Monday, July 28, 2003 - 01:15 pm:
Thanks for responding to my question.One thing I failed to mention was that I had vacinated her for WN Feb 1st& Mar.1st,then was bred on May 9&11.After reading all the problems people were having,on the web site, Lost-foals-group.4t.com,I am concerned this may be my problem. The vet took a blood sample and is sending it off to Tenn.to comfirm the pregnancy or not and should be back in a week.Can they tell if it is a false pregancy with that test?Will the mix up in her hormones throw it off? Thanks for your help,Karen
Anonymous Posted From: 220.127.116.11
Posted on Thursday, July 31, 2003 - 09:48 am:
I'm not sure what the blood test will show. Your vet should be able to explain the blood test results.
I will say that there are thousands of mares vaccinated for WNV that have gotten pregnant, maintained pregnancies and not had any problems with their foals. Take the "lost foals group" with a grain of salt. My mare was Vaccinated the year before I bred her, the year I bred her (vaccinated twice) and 30 days before foaling. Both she and the foal are fine. And she took on the first breeding, 10 days after being vaccinated.
Jos Posted From: 18.104.22.168
Posted on Thursday, July 31, 2003 - 10:31 am:
If the blood is to be tested for estrone sulfate, then you may get a definitive answer as to pregnancy status - I say "may", as it is a little early for reliable results from this hormone assay. Although the hormone starts to be present from about 70 days onwards, it is not at higher systemic levels until about 100 days. Estrone sulfate is produced by the feto-placental unit, so no fetus = no hormone. If however the test is being run for equine chorionic gonadotropin (eCG, also known as PMSG) then if the mare was pregnant, but has lost her pregnancy it will still return a "pregnant" result, as this hormone continues to be produced until about 120-150 days, regardless of whether the mare is still pregnant.
With respect to the "lost foals group" web site, "anonymous" (above) is absolutely correct. There is nothing substantiated or supported by scientific evidence on the site, so take it with a grain of salt. For more observations about that site by me, click here.
Thanks for all the info,I will call my Vet in the morning and find out what kind of tests were done.Hopefully we will get a pos. answer!!! Can't wait to have another little warmblood!! I backed my filly tonight and she was a perfect angel! Gotta love that mellow personality!Thanks again,Karen
KarenS Posted From: 22.214.171.124
Posted on Tuesday, August 05, 2003 - 01:18 am:
The test that was done was the eCG and it isn't back yet,will post when I hear.KarenS
KarenS Posted From: 126.96.36.199
Posted on Thursday, August 07, 2003 - 12:47 am:
Well,I found out that the test was the eCG,PMSG one and it came back today stating that my mare is PG. SOOO,I will have to wait until next Apr and see!! Thanks again for all the info, Karen
Jos Posted From: 188.8.131.52
Posted on Thursday, August 07, 2003 - 02:28 am:
... or run an estrone sulfate assay after 100 days of pregnancy!
Anonymous Posted From: 184.108.40.206
Posted on Thursday, August 07, 2003 - 07:47 pm:
Our 7YO mare was last bred A.I. on June 5th (the 4th time this breeding season alone) and I was told that she ovulated a day later. On the 36th through 38th days, she was flagging her tail at the pasture gate and looking interested! Could this be a false sign or are we victims of wishful thinking? She has never been confirmed as being pregnant and it will be a while until we can get the vet out.
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