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Me again, ET synching questions....

Equine-Reproduction.com Bulletin Board » Embryo Transfer » Me again, ET synching questions.... « Previous Next »


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Heidi Caldwell
Neonate
Username: Heidicald

Post Number: 9
Registered: 10-2007
Posted on Wednesday, June 03, 2009 - 10:45 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Jos or Cathy, Please see my old posts for more info on the history of my ET case...

Short version, my mares were synched a few weeks ago using Regumate for 12 days, then 2 days of Lut. They then went up at the university to have ultrasounds everyday to monitor them for synchro. Long story short, my donor mare ovulated and was bred, the recipient developed a huge follicle FAST that never ovulated (we stopped tracking it once she was out of the day range for embryo transfer) it finally seemed to be shrinking after getting to a 56!!

IF my donor is preg (I will find out Monday) - end of story, she will have to carry it - although it was what I was trying to avoid as she is my competition mare and older as well.

I need a plan B!

If there is no pregnancy, I want to try again and THIS time, I have two mares to synch. One is the failure mare from before (whom I own) and the other is a loaner younger mare who is 8 and had two foals.

My question is one of protocol...

I will find out Monday if Donor is preg, if she's not, what is the best way to get everyone synched as soon as possible? Which shot - I am confused as BET labs has two that seem to do the same thing.. Also, I think the BET shot can be given at ANY point in their cycle, right? Because the donor mare & recip #1 will be coming into heat prob very soon. I also have a almost full bottle of Regumate to use up. I am not going to have the money to ship them all to the university, so I need to know when I should ultrasound and give what shots, when. I will also be asking my home vet, but I want to get your opinions as he can be very hard to get on the phone.

Thanks again for all your help and fast responses, I really appreciate it!
 

Jos
Board Administrator
Username: Admin

Post Number: 2469
Registered: 10-1999
Posted on Thursday, June 04, 2009 - 10:26 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

As previously noted in the other thread, the BET Pharm products have worked similarly for us, so use of either the biorelease altrenogest or the biorelease P+ can be used. Either can be started at any point in the cycle, with a dose of Prostaglandin F given on the 10th day after treatment. The logical thing is to start your recip. mares 2 days after the donor. I would recommend checking the mares by ultrasound on day 14 to make sure that they are on track (nothing is 100%!), and then again day 18 (presuming that jives with the 14 day u/s) preparatory to breeding.
 

Heidi Caldwell
Neonate
Username: Heidicald

Post Number: 10
Registered: 10-2007
Posted on Thursday, June 04, 2009 - 10:37 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Excellent, concise advice, thank you very much!!



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