Embryo Transfer is the transfer of a mares embryo into a recipient (surrogate) mares uterus. The recipient then carries the fetus as a regular pregnancy. This allows ‘show’ mares to continue to compete while producing offspring, allows for mares to produce multiple offpsring per year and allows some mares that have fertility problems to continue producing offspring.


This specialized procedure costs around $4000 plus mare care for the donor mare and does not include the cost of shipping the semen, stud fees or any other stallion related fees. This does include the cost of the recipient that is pregnant with your mares foal. The recipient is sold to the mare owner once she is confirmed 40 days pregnant and a viable pregnancy is present.

Every attempt is made to find suitable recipients that are of appropriate size and with good temperments. If the mare owner wants to supply  their own recipient for a specific donor mare there is a $400 fee to synchronize the owners recipient mare with the donor mare.

The procedure: Embryo transfer (ET) involves breeding the donor mare (your mare) as per a regular heat cycle (fresh or frozen semen) then 8 days later flushing her uterus with a specialized solution. The solution is filtered through a fine mesh filter so the tiny embryo can be isolated and then transfered into a recipient (surrogate) mare. Both mares have to have known ovulation dates and be synchronized within 2 days of ovulation from one another. Ideally we want the donor mare to ovulate 1 – 2 days BEFORE the recipient mare.