While culture conditions have not been fully optimized, piglets have been produced from the transfer of SCNT blastocysts.
Cloned piglets can be produced when 50 or more fresh blastocysts are transferred, oreven if cryopreserved SCNT blastocysts are transferred(Table 19.1).
Obviously, the percentage of live piglets per embryo transferred is low compared to IVF embryos transferred at the blastocyst stage; the frequency of piglets from IVF blastocysts cultured in vitro is 12.7%