There are several ways to go about this. The first thing I did was buy sixty young cross bred, milk-influenced heifers for recipients. I do not recommend doing this because you have to keep these females open to receive embryos and you can amass a huge feed bill just keeping them in good shape. There are easier ways. The easiest, least expensive way is to find someone already doing embryo work, who will have recipients available for use.
Several companies perform embryo transfer on a commercial basis.
Several Texas Longhorn breeders are actively engaged in an embryo transfer program and may have embryos from several different matings available for sale. More and more in Texas Longhorn sales, you are seeing recipient cows carrying embryo calves. This is a great way to buy a planned mating already under way, and you are normally guaranteed a live calf. The hardest part of embryo transfer to me is that you are coming home with a cow with no horns, even though you can sell her after she calves or use her again. Most everyone, after spending dollars, wants to bring home the prize.