MAIN PAGE
EQUINE REPRODUCTION ARTICLES
SHORT COURSES
OTHER SERVICES AVAILABLE FROM EQUINE-REPRODUCTION.COM
FROZEN SEMEN STALLIONS
CERTIFIED SEMEN FREEZING LOCATIONS
EQUINE REPRODUCTION SUPPLIES
EQUINE REPRODUCTION BOOKS
EQUINE REPRODUCTION LINKS
EQUINE REPRODUCTION E-MAIL LIST
EASILY CALCULATE THE CORRECT VOLUME OF SEMEN AND EXTENDER TO SHIP OR USE ON FARM!
EQUINE REPRODUCTION BULLETIN BOARD
SITE MAP OF EQUINE-REPRODUCTION.COM
CONTACT US

horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
horse breeding
Go to the articles page
 
Equine-Reproduction.com Bulletin Board
 
Topics Page Topics Page Register for a new account Register Edit Profile Profile Log Out Log Out Help/Instructions Help    
New Posts New Posts Last 1|3|7 Days Search Search Tree View Tree View  
Posting is restricted to registered board members only to prevent spamming of the board. We regret the necessity of this action, but hope you will appreciate the importance of the integrity of the board. Registration is free and information provided during the process will not be submitted to third parties.

Question about embryo transfer for twins

Equine-Reproduction.com Bulletin Board » Embryo Transfer » Question about embryo transfer for twins « Previous Next »


Author Message
 

Lori Hewett
Neonate
Username: Fwf

Post Number: 1
Registered: 01-2007
Posted on Saturday, January 13, 2007 - 11:59 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Correct me if I am wrong, but I am assuming that if the donor mare twins, in order to use both embryos from a single breeding on different mares for the possibility of having two successful pregnancies, they have to be frozen embryos? There is no way of separating the embryos otherwise, is there?
Thanks in advance
 

Jos
Board Administrator
Username: Admin

Post Number: 1141
Registered: 10-1999
Posted on Saturday, January 13, 2007 - 11:39 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Embryo transfer in the equine is performed at between 6 and 9 days post-fertilization. Fixation of the conceptus does not occur in the equine until about 16 days post-fertilization. Hence, there is no problem using the embryos in different mares, as they will be separate conceptii.

If that isn't what you mean, can you elucidate a little more on your question?
 

Lori Hewett
Neonate
Username: Fwf

Post Number: 2
Registered: 01-2007
Posted on Sunday, January 14, 2007 - 08:40 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Thanks for writing, Jos, and I love this site. When I had written my message, I guess I wasn't sure how someone could tell that there are two separate embryos, as they cannot be seen on ultrasound at that time. But I imagine that once they are flushed out of the donor mare, the techinician could then be able to see if there are more than one embryo?

I have a mare that I am considering doing ET with this year. She suffered a rectal-vaginal tear when she had her '06 foal. We had it repaired, but I do not want to take the risks of her carrying a foal full-term again. She has a tendancy to twin. She did last year, and my vet had to reduce one. Both appeared equally viable. So, I just wanted to find out if there was a possibility of us using both embryos on separate mares, in the event that situation does arise. I wasn't planning on freezing the embryos, and wasn't sure if that would be a possiblity. I was going to try to synchronize two other mares that I have, for better odds of getting the timing correct anyways. Maybe we would get really lucky and have two embryos with two recipiant mares ready. Of course, I would be ecstatic over one. I'd probably faint if we got two mares in foal on one breeding!
 

Ruth
Weanling
Username: Rooty

Post Number: 47
Registered: 07-2006
Posted on Wednesday, January 17, 2007 - 06:26 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Lori, please keep posting about your experiences with ET, it's something I'm considering down the line for my yearling, I have her earmarked as my next competition horse, but also breed sometimes. I have heard that it is recommended to use mares that are available from the ET facility to carry the foals, as it can be difficult to synchronize that many different mares cycles and I'm wondering how much truth there is in that, especially in my case when I have this girl's half-sister to use, and would likely have another broodie by the time I'm ready to do this.
So it'll be interesting for me to hear about your experience, if you don't mind keeping me up to date.
 

Jos
Board Administrator
Username: Admin

Post Number: 1148
Registered: 10-1999
Posted on Wednesday, January 17, 2007 - 08:51 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

One can synchronize donor and recipient mares with an excellent degree of success by using "P&E" (follow that link for more details).
 

Ruth
Yearling
Username: Rooty

Post Number: 51
Registered: 07-2006
Posted on Tuesday, January 30, 2007 - 02:35 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Thanks for that link Jos!
 

Jan H
Breeding Stock
Username: Jan_h

Post Number: 595
Registered: 01-2006
Posted on Tuesday, January 30, 2007 - 02:46 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Now lets say she does that, gets twin embryos and implants them into two seperate mares, to register the other twin she would have to pay stud fee for the other foal from that second embryo wouldnt she? I mean I can not see a stallion owner giving someone a breeding certificate for two foals out of a single breeding. am I right about this?
 

Cathy
Breeding Stock
Username: Cathy

Post Number: 256
Registered: 04-2005
Posted on Sunday, July 15, 2007 - 10:18 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Jan we had a client this year that we knew was going to ovulate on each overy. We sent him to the local repro. specialist that has a large heard of recip mares.
They flushed her and did get two embryos that were implanted. It resulted in two confirmed pregnancies. The owner did have to pay another breed fee.
 

Jos
Board Administrator
Username: Admin

Post Number: 1440
Registered: 10-1999
Posted on Sunday, July 15, 2007 - 09:59 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

It will depend upon the individual breeding contract and stallion owner. It's one thing to have a mare carry twins naturally, but quite another to be doing embryo transfer...
 

Mila Davidson
Neonate
Username: Promise_me

Post Number: 4
Registered: 06-2007
Posted on Monday, July 16, 2007 - 11:14 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

It cetainly depends on the breed and the owner. I flushed a mare this spring and got twin embryo's. I called the Stallions manager and was told not to worry about any additional fees because they came from the same flush. I was told if the were from different flushes, I would have to pay the fee again, but not when they were in the same flush. Good thing, the fee was $5,000!%!&!? I don't think many stallion owners would be this gracious. I sure was lucky. Good luck with yours.



Please note that opinions, product information, advice or suggestions posted on this bulletin board are not necessarily those of the management at Equine-Reproduction.com nor does the maintenance of the post position indicate an implicit or any endorsement of that information, opinion or product.

Further, although we have the greatest respect for the posters offering assistance here, you are advised to seek a consultation with your veterinarian prior to using information obtained from this board if it is of a veterinary nature.

Proud to be sponsored and supported by:
IMV Technologies - makers of Equine AI Equipment
Equine A.I. Equipment Supplies
Universal Medical Systems Ultrasounds
For your Veterinary Ultrasounding Needs
Hamilton Research Inc - Home of the Equitainer
Hamilton Research Inc - Home of the Equitainer
Exodus Breeders Supply - Your one-stop shop for all your reproductive needs!
Exodus Breeders Supply
Har-Vet: An Industry Leader in Equine Veterinary Products
An Industry Leader in Equine Veterinary Products!
Reproduction Resources: Specializing in Artificial Breeding and Embryo Transfer Supplies
Specializing in Artificial Breeding and ET Supplies
BET Pharm: Your Compounding Pharmacy for Reproductive Needs!
Your Compounding Pharmacy for Reproductive Needs!
www.SemenTanks.com - Quality Tanks at Competitive Prices!
Quality Tanks at Competitive Prices!
J.L. Smith Co. - Safe, affordable breeding stocks!
Safe, affordable breeding stocks!
  International Veterinary Information Service
International Veterinary Information Service
 

MAIN PAGE | INFORMATIONAL ARTICLES | SHORTCOURSES | SERVICES
FROZEN STALLIONS | FREEZING LOCATIONS | SUPPLIES | BOOKS | LINKS
EQUINE REPRODUCTION E-MAIL LIST | SEMEN CALCULATOR | BULLETIN BOARD
SITEMAP | CONTACT US