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Descriptive characteristics for the lambs used in the experimental study.
| Group | Fetal start | Fetal end | MV | MV + VARA |
| N | 7 | 7 | 10 | 6 |
| GA | 130–132 | 135–136 | 130–132 | 130–132 |
| Sex (M:F) | 3:4 | 3:4 | 5:5 | 6:0 |
| Ewe parity (Twin:Single) | 7:0 | 2:5 | 4:6 | 3:3 |
| Birth weight | 3.58 (0.71) | 3.02 (0.44) | 3.95 (0.63) | 4.16 (0.62) |
| Final weight | N/A | N/A | 3.77 (0.74) | 3.83 (0.64) |
GA, gestational age; N/A, not determined; MV, mechanical ventilation; VARA, vitamin A and all-trans retinoic acid.
