Table 3.
The disease incidences of the birds challenged with the GX18NNM4 strain.
| Group | Heart | Liver | Spleen | Lung | Pancreas | Caecum | Morbidity | Mortality | Tumor Rate | PI |
|---|---|---|---|---|---|---|---|---|---|---|
| I | 22.5% (9/40) | 12.5% (5/40) | 7.5% (3/40) | 5% (2/40) | 20% (8/40) | 17.5% (7/40) | 45% (18/40) | 25% (10/40) | 42.5% (17/40) | 39.9% |
| II | 15% (6/40) | 7.5% (3/40) | 5% (2/40) | 0 | 7.5% (3/40) | 10% (4/40) | 27.5% (11/40) | 15% (6/40) | 27.5% (11/40) | 61.1% |
| III | 34.5% (20/58) | 32.8% (19/58) | 17.2% (10/58) | 13.8% (8/58) | 27.6% (16/58) | 17.2% (10/58) | 75.9% (44/58) | 43.1% (25/58) | 70.7% (41/58) | -- |
| IV | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -- |
PI: protection index.