Table 3.
In vivo development of aggregated embryos
| Recipient sow No. | No. of embryos transferred | Blastocyst stage (daya | Recipient cycle (day) | Day 27 pregnancy detection | Gestation length (day) | Piglets born | Cloning Efficiencyb |
|---|---|---|---|---|---|---|---|
| 0571 | 15 | Day 6 | Day 5 | – | – | – | – |
| 0574 | 17 | Day 6, Day 7 | Day 4 | + | Abortion at Day 29 | – | – |
| 0301 | 26 | Day 6 | Day 4 | + | 118 | 4 | 15.4% |
| 0302 | 21 | Day 6, Day 7 | Day 5 | – | – | – | – |
| 0303 | 21 | Day 6, Day 7 | Day 6 | – | – | – | – |
| 0304 | 32 | Day 6 | Day 5 | – | – | – | – |
| 0305 | 37 | Day 6, Day 7 | Day 4 | – | – | – | – |
| 0306 | 26 | Day 6, Day 7 | + | 115 | 4 | 15.4% | |
| 0307a | 35 | Day 6 | + | Resorption | – | – | |
| 0309 | 30 | Day 6, Day 7, Day 8 | – | – | – | – | |
| Total | 260 | – | 4 | – | 8 | 3.3% |
The majority of the transferred embryos were D6 blastocysts.
Cloning efficiency was calculated as follows: No. of piglets/No. of embryos transferred.
a
The recipient sow was still pregnant at Day 62.