Table 1.
History of nVarIBD in Egyptian chicken flocks during 2023.
| Flock No. | Locality | Type of Chickens | Total No. | Age (Days) | Types and Age of IBD Vaccination Used | Mortality Rate % during 5 Days of Infection | Sample Origin |
|---|---|---|---|---|---|---|---|
| 1 | New Valley | Commercial broiler | 40,000 | 20 | Recombinant (1 DO) and live IM (14 DO) | 0.2 | Bursa homogenate |
| 2 | New Valley | 40,000 | 13 | 0.3 | |||
| 3 | Alexandria | 12,000 | 18 | Live IM (7 DO) and IMP (14 DO) | 1 | ||
| 4 | Alexandria | 14,000 | 21 | 0.5 | |||
| 5 | Beheira | 10,000 | 17 | ICX (1 DO) and live IM (14 DO) | 1.2 | ||
| 6 | Beheira | 9000 | 20 | 1.5 | |||
| 7 | Alexandria | 15,000 | 18 | 0.4 | |||
| 8 | Beheira | 14,000 | 21 | Live IMP (14 DO) | 2 | ||
| 9 | Beheira | 10,000 | 26 | 2.1 | |||
| 10 | Alexandria | 7000 | 16 | Live IM (7 DO) and IMP (14 DO) | 1 | ||
| 11 | Alexandria | 20,000 | 18 | 2 | |||
| 12 | Beheira | 9000 | 21 | 1.4 | |||
| 13 | Beheira | 6000 | 22 | Recombinant (1 DO) and live IM (14 DO) | 1 | ||
| 14 | Beheira | 7000 | 19 | 0.9 | |||
| 15 | Alexandria | 10,000 | 25 | 0.6 | |||
| 16 | Beheira | Indigenous Balady Breed | 6000 | 49 | 0.3 | Bursa and spleen homogenate | |
| 17 | Beheira | 4500 | 35 | 2 | |||
| 18 | Beheira | 6700 | 19 | Live IM (7 DO) and IMP (14 DO) | 1.5 |
DO: days old; IM: intermediate; IMP: intermediate plus; ICX: immunocomplex.