Table 2.
Descriptive statistics on the presence of faecal pathogens in 287 faecal samples collected from 1 to 14 day old calves in 30 large Swedish dairy herds with high calf mortality risk (n = 140) and 30 herds with low mortality risk (n = 147) mortality risk in calves 1–90 days of age. The study was conducted between December 2005 and March 2006.
| High mortality |
Low mortality |
|||||
|---|---|---|---|---|---|---|
| 25 pct | Median | 75 pct | 25 pct | Median | 75 pct | |
| Number of faecal samples/herd | 5 | 5 | 5 | 5 | 5 | 5 |
| Proportion (%) of diarrhoetic samples/herd | 0 | 27 | 60 | 0 | 0 | 20 |
| Proportion (%) of samples positive for Cryptosporidium spp. | 0 | 40 | 60 | 0 | 10 | 50 |
| Proportion (%) of samples positive for rota virus | 0 | 10 | 40 | 0 | 18 | 20 |
| Proportion (%) of samples positive for corona virus | 0 | 40 | 60 | 0 | 10 | 50 |
| Proportion (%) of diarrhoetic samples positive for Cryptosporidium spp. | 0 | 20 | 40 | 0 | 0 | 0 |
| Proportion (%) of diarrhoetic samples positive for rota virus. | 0 | 0 | 0 | 0 | 0 | 0 |
| Proportion (%) of diarrhoetic samples positive for coronavirus. | 0 | 0 | 0 | 0 | 0 | 0 |
| Age (days) of non-diarrhoetic calves sampled | 2 | 4 | 7 | 3 | 5 | 8 |
| Age (days) of diarrhoetic calves sampled | 6 | 8 | 10 | 5 | 9 | 11.5 |