Table 2 Disease frequency in number of cases (and per cent) in herds A-E during the 12-month period preceding the last herd visit
Herd | Cow-years | Date of last visit | DA | K | DA+K | Total |
|---|---|---|---|---|---|---|
A | 149 | 2005-06-14 | 6 (4.0%) | 8 (5.4%) | 9.4% | 97 (65.1%) |
B | 263 | 2005-05-02 | 6 (2.3%) | 4 (1.5%) | 3.8% | 39 (14.8%) |
C | 499 | 2005-06-15 | 8 (1.6%) | 7 (1.4%) | 3.0% | 181 (36.3%) |
D | 151 | 2005-12-08 | 9 (6.0%) | 1 (0.6%) | 6.6% | 70 (46.4%) |
E | 164 | 2005-12-22 | 9 (5.5%) | 1 (0.6%) | 6.1% | 141 (86.0%) |