| Time (h) | NO (%) | Total | Mortality (%) (Mean ± SE) | ANOVA |
| 6 | 1.0 | 1808 | 20.07 ± 2.43b | Df = 5, 114 |
|
| 2.0 | 1527 | 26.70 ± 3.76b | F = 153.58 |
|
| 3.0 | 1938 | 93.87 ± 3.62a | P < 0.0001 |
|
| 5.0 | 2000 | 100a |
|
| C-ULO | 1690 | 19.74 ± 3.61b |
| |
| Control | 1820 | 21.35 ± 3.38b |
| |
| 12 | 1.0 | 1255 | 62.79 ± 8.49b | Df = 5, 90 |
|
| 2.0 | 1567 | 99.94 ± 0.06a | F = 100.13 |
|
| 3.0 | 1571 | 100a | F < 0.0001 |
|
| 5.0 | 1566 | 100a |
|
| C-ULO | 1174 | 18.55 ± 4.20c |
| |
| Control | 1141 | 16.60 ± 3.35c |
| |
| 24 | 1.0 | 1181 | 54.38 ± 6.60b | Df = 5, 84 |
|
| 2.0 | 1511 | 100a | F = 189.90 |
|
| 3.0 | 1520 | 100a | P < 0.0001 |
|
| 5.0 | 1496 | 100a |
|
| C-ULO | 1187 | 14.83 ± 2.95c |
| |
| Control | 1197 | 13.20 ± 3.39c |
| |