Table 2.
Between herd prevalence (%) (95% confidence interval) of enteropathogens in Dutch dairy calves (1–21 days), percentage of herds with 1–6 calves positive for any of the enteropathogens and the intra-class correlation coefficient (ICC). In total 424 calves in 108 herds were sampled between January and April 2007.
| E. coli | Corona | C. parvum | Rota | Cl. perfringens | |
|---|---|---|---|---|---|
| Herds | 9 (5–16) | 12 (7–20) | 57 (48–67) | 46 (37–56) | 85 (77–91) |
| Number of calves per herd | |||||
| 1 | 8 | 12 | 29 | 31 | 26 |
| 2 | 1 | 14 | 10 | 24 | |
| 3 | 8 | 4 | 16 | ||
| 4 | 5 | 2 | 11 | ||
| 5 | 2 | 4 | |||
| 6 | 5 | ||||
| Intra-class correlation coefficient (95%CI) | 0.27 (0.03–0.85)a | Not applicable | 0.33 (0.19–0.51) | 0.24 (0.12–0.40) | 0.19 (0.07–0.43) |
a
Not statistically significant at P-value = 0.05.