Table 1.
Principal manifestations observed in farms with H. somni-induced infections in the state of Paraná, southern Brazil
| Geographical location | Breed | Age range (days) | Principal clinical manifestations | Calves affected | ||
|---|---|---|---|---|---|---|
| Fatality | Total | Necropsied | ||||
| A: Arapongas | Nelore | 2–10 | Lateral recumbency | 8 | 40 | 2 |
| Muscular weakness | ||||||
| Sudden death within 2–3 days | ||||||
| B: Congoinhas | Nelore | 25–30 | Abnormal gait | 4 | 174 | 1 |
| Motor incoordination | ||||||
| Sudden death within 2 days | ||||||
| C: Guaraci | Girolando | 8-month-old fetus | Abortion | 20a | 20 | 1 |
| Infertility | ||||||
| D: Guarapuava | Shorthorn × Hereford | 50–60 | Coccidiosis | 11 | 110 | 1 |
| Unresolved diarrhea | ||||||
| Poor feed conversion ratio | ||||||
| Death within 5–7 days | ||||||
aNumber of abortions informed by the consulting veterinarian