Table 2. In vitro development of SCNT embryos and production of heterozygous FBN1 mutant cloned piglets.

In vitro development of SCNT embryos
SCNT embryos reconstructed	395		334
Early cleavage-stage embryos	302		272b
Blastocyst-stage embryos on day 5	245a		–
Production of heterozygous FBN1 mutant cloned piglets
Recipient	#R1a	#R2a	#R3b	#R4b
Embryos transferred	103	103	136	136
Pregnancy	+	+	+	+
No. of viable cloned piglet	4	3	2	8
No. of stillborn cloned piglet	0	1	1	0

^aThe SCNT embryos cultured for 5 to 6 days were transferred to the recipients’ uteri.

^bThe SCNT embryos cultured for 1 to 2 days were transferred to the recipients’ oviducts.