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Numerical summary of written observations made by blinded observers
| CO2 displacement rate (% cage volume per min) | 10% | 20% | 50% | Prefilled cage |
|---|---|---|---|---|
| Circling backwards | 1 | 3 | 4 | 0 |
| Salivation | 3 | 3 | 3 | 3 |
| Urination | 0 | 2 | 0 | 3 |
| Lacrimation | 0 | 0 | 2 | 1 |
| Twitching or convulsions | 2 | 1 | 3 | 3 |
| Rapid euthanasia | 1 | 3 | 3 | 3 |
| Prolonged euthanasia | 5 | 3 | 0 | 0 |
| Good euthanasia | 0 | 0 | 3 | 5 |
| Appropriate method | 1 | 3 | 5 | 6 |
Values represent the number of ferrets in each group for which an observation was noted.
