Table 2.
Proportion (%) of fecal samples positive for target bacteria processed in 2019a and 2020b.
| Target bacteria | Calf | Heifer | Cow | Manure pit | ||||
|---|---|---|---|---|---|---|---|---|
| 2019 | 2020 | 2019 | 2020 | 2019 | 2020 | 2019 | 2020 | |
| Generic E. coli | 97.9 | 98.6 | 99.3 | 99.3 | 99.3 | 100.0 | 92.1 | 79.7 |
| Campylobacter spp. | 31.4 | 21.5 | 82.9 | 66.4 | 84.3 | 72.2 | 56.4 | 36.4 |
| Salmonella spp. | 3.6 | 3.5 | 2.1 | 4.9 | 2.9 | 4.9 | 11.4 | 17.5 |
aA total of 140 samples were analyzed by each production phase and manure pit; bA total of 144 samples were analyzed by each production phase and manure pit.