Table 4.
Postmortem findings observation in layer flocks affected with co-infection of LPAI/ND/E. coli/mycoplasma
| S. no. | Pathological finding | LPAI + ND | ND |
|---|---|---|---|
| 1. | No prominent lesion | Characteristic during initial 3–5 days | Occasional during initial 3–5 days |
| 2. | Brain congestion | Present | Absent |
| 3. | Tracheitis | Mucous/haemorrhagic | Mucous/haemorrhagic or no lesion |
| 4. | Lung alterations | Prominently congested, edematous and frothy | Occasional congestion and edema |
| 5. | Serosal haemorrhages | Present | Present |
| 6. | Proventriculus haemorrhages | Present | Present |
| 7. | Button ulcers in the intestine and caecal tonsils | Observed in young birds | Not observed |
| 8. | Egg peritonitis | Highly prominent | Prominent |
| 9. | Oophoritis | highly prominent | Prominent |
Both groups were complicated with MG, MS and E. coli in different combinations when the disease advanced