Table 4.
Occurrence of Salmonella isolates in different samples collected from 12 layer flocks from five divisions of Bangladesh as confirmed though molecular assays.
| Type of Sample | Number of Isolates | Occurrence (with 95% CI *) |
p-Value (Pearson’s Chi-Squared Test) |
|---|---|---|---|
| 16S rRNA gene based PCR (Salmonella spp.) | |||
| Cloacal swab (n = 535) | 134 | 25 (21.4–28.9) | 0.015 |
| Visceral organ (n = 50) | 22 | 44 (30–58.7) | |
| Droppings (n = 180) | 49 | 27.2 (20.9–34.3) | |
| Total sample (N = 65) | 205 | 26.8 (23.7–30.1) | |
| invA and spvC gene based PCR (Salmonella Gallinarum) | |||
| Cloacal swab (n = 535) | 129 | 24.1 (20.5–28) | 0.02 |
| Visceral organ (n = 50) | 21 | 42.0 (28.2–56.8) | |
| Droppings (n = 180) | 47 | 26.1 (20–33.2) | |
| Total sample (N = 765) | 197 | 25.8 (22.7–29) | |
* CI: Confidence Interval.