Table 2.
Effect of virulent E. coli horizontal transmission on average BWG and 7-d mortality in neonatal broiler chickens (exp 1 & exp 2).
| Treatment | 7-d BWG (g)1 |
Mortality (%)2 |
||
|---|---|---|---|---|
| Exp 1 | Exp 2 | Exp 1 | Exp 2 | |
| Negative control | 129.52 ± 3.55a | 133.02 ± 3.43a | 0y | 0y |
| Spray challenge contact | 115.89 ± 3.07b | 119.05 ± 3.06b | 10.31z | 15.62z |
The superscript letters “y,z” indicate significant differences between treatments at P < 0.001. The superscript letters “a,b” indicate significant differences between treatments at P < 0.05.
1
Data are expressed as mean ± SE.
2
Data are expressed as number of deaths/total (%).