Table 2. Reproductive parameters of the synchronous recipients after nonsurgical deep-uterine transfer of 30 fresh porcine embryos.
| Embryonic stage* |
||
| Morula | Blastocyst | |
| Recipients, N | 17 | 14 |
| Pregnancy rate, N (%) | 10 (58.8) | 9 (64.3) |
| Farrowing rate, N (%) | 10 (58.8) | 9 (64.3) |
| Total born (mean ± SEM) | 10.3 ± 1.1 | 10.8 ± 1.0 |
| Born alive (mean ± SEM) | 9.9 ± 1.0 | 10.2 ± 0.9 |
| Stillborn (mean ± SEM) | 0.4 ± 0.3 | 0.6 ± 0.3 |
| Piglet birth weight (kg; mean ± SEM) | 1.2 ± 0.2 | 1.2 ± 0.2 |
| Sex ratio at birth (%; male/female) | 47.0/53.0 | 48.4/51.6 |
| Piglet production efficiency (%) | 19.4 | 21.9 |
*Embryos at the morula and unhatched blastocyst stages were collected from donors at days 5 and 6 (day 0=onset of estrus), respectively, and were transferred into the recipients on days 5 and 6 of the cycle, respectively.