Division 5
United Kingdom
The index is calculated as shown in the following example:
| Index is a mean score per bird per observation = 112/80 = 1,4 | ||||||||||
| Clinical signs | Day after inoculation(number of birds) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Total | Score | |
| normal | 10 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 14 × 0 | = 0 |
| sick | 0 | 6 | 10 | 4 | 0 | 0 | 0 | 0 | 20 × 1 | = 20 |
| dead | 0 | 0 | 0 | 6 | 10 | 10 | 10 | 10 | 46 × 2 | = 92 |
| Total = 112 | ||||||||||