Systems of transferring embryos and managing recipients

摘要

Provided herein are methods of managing embryo transfer programs, for instance bovine embryo transfer programs. Examples of such methods are referred to as “bred recipient transfer” programs, in which embryos (e.g., clonal embryos) are transferred to recipients that have been impregnated. Also provided are methods of enhancing survival of clonal embryos, in which the clonal embryos are transferred to bred recipients, and methods of increasing delivery success rates for cloned animals. Methods of serial transfer of embryos to a recipient, when that recipient returns to heat after an unsuccessful transfer, are provided. Finally, specific methods are provided for cloning male mammals, using diploid differentiated cells taken from a semen sample.