TABLE 3.
Brucellosis seroprevalence in cattle slaughtered according to sex, age, breed and geographical region in Nigeria using the Rose Bengal test.
| Variables | Characteristic | Seropositive animals based on RBT | Odds ratio | 95% CI | p-value | |||
|---|---|---|---|---|---|---|---|---|
| Positive, n | % | Negative, n | % | |||||
| Sex | Male animals | 140 | 3.2 | 4245 | 96.8 | 1 | - | - |
| Female animals | 175 | 4.7 | 3545 | 95.3 | 1.47 | 1.16–1.88 | 0.002 | |
| Age | Adult | 296 | 3.9 | 7245 | 96.1 | 1 | - | - |
| Young adult | 19 | 3.2 | 545 | 96.6 | 0.87 | 0.54–1.39 | 0.553 | |
| Breed | Sokoto Gudali | 8 | 1.8 | 436 | 98.2 | 1 | - | - |
| Rahaji | 96 | 4.6 | 1978 | 95.4 | 2.6 | 1.28–5.48 | 0.01 | |
| Bunaji | 169 | 3.5 | 4638 | 96.5 | 2.0 | 0.97–4.06 | 0.080 | |
| Mixed | 25 | 6.1 | 385 | 93.9 | 3.5 | 1.58–7.94 | 0.002 | |
| Othersa | 17 | 4.6 | 353 | 95.4 | 2.6 | 1.12–6.15 | 0.036 | |
| Geographical region | South-western | 188 | 4.0 | 4479 | 96.0 | 1 | - | - |
| Northern | 90 | 3.8 | 2266 | 96.2 | 0.94 | 0.73–1.22 | 0.67 | |
| Southern | 37 | 3.4 | 1045 | 96.6 | 0.84 | 0.58–1.21 | 0.84 | |
RBT, Rose Bengal test.
a
Kuri, Adamawa Gudali and Djali breeds were grouped into others for statistical analysis because they contained cells whose numbers were less than 5.