Table 1.
Animal and herd level seroprevalences for bovine leukemia virus (BLV), Mycobacterium avium subspecies paratuberculosis (MAP) and Neospora caninum (NC) in 1425 beef and 1204 dairy cattle in 49 beef and 40 dairy herds in Manitoba
| BLV | MAP | NC | ||
|---|---|---|---|---|
| Animals test + ve % (95% confidence interval) | Dairy | 60.8% (51.8%–69.9%) | 4.5% (2.8%–6.2%) | 8.3% (5.1%–11.6%) |
| Beef | 10.3% (2.5%–18.0%) | 1.7% (0.02%–3.5%) | 9.1%) (6.1%–12.1%) | |
| Herds with ≥ 1 test + ve % (95% confidence interval) | Dairy | 97.4% (93.5%–100%) | 68.4% (52.5%–84.2%) | 59.8%) (41.8%–77.9%) |
| Beef | 47.9% (28.0%–68.0%) | 29.2% (10.5%–47.9%) | 85.7%) (73.5%–97.8%) | |
| Herds with ≥ 2 test + ve % (95% confidence interval) | Dairy | 97.4% (93.5%–100%) | 43.1% (24.9%–61.4%) | 37.0%) (19.9%–54.3%) |
| Beef | 32.6% (13.8%–51.3%) | 11.0% (0.0%–27.9%) | 65.2%) (48.2%–82.2%) | |
| Animals test + ve in herds with ≥ 1 test + ve % (95% confidence interval) | Dairy | 62.5% (53.5%–71.4%) | 6.6% (4.6%–8.6%) | 13.4%) (9.3%–17.4%) |
| Beef | 21.7% (8.6%–34.7%) | 6.0% (2.3%–9.6%) | 10.6%) (7.4%–13.7%) | |
| Animals test + ve in herds with ≥ 2 test + ve % (95% confidence interval) | Dairy | 62.5% (53.5%–71.4%) | 8.7% (6.3%–11.1%) | 17.4%) (11.8%–23.0%) |
| Beef | 29.0% (12.4%–45.7%) | 9.9% (0.0%–26.3%) | 12.9%) (9.1%–16.6%) |