Table 3.
The effect of locations on the apparent seroprevalence of BHV1, BVDV, N. Caninum and C. Burnetii exposure in dairy cows with reproductive disorders
| Study areas | Disease types | Animal examined | Number of Positives | A. seroprevalence (%) | 95% CI | OR | X2 | P value |
|---|---|---|---|---|---|---|---|---|
| Bishoftu | BHV1 | 23 | 16 | 69.6 | 21.1–95.1 | 1 | 30.76 | < 0.01 |
| BVDV | 23 | 16 | 69.6 | 21.1–95.1 | 1 | |||
|
N. caninum C. burnetii |
23 23 |
1 0 |
4.3 0 |
0.2–49.7 - |
0.02 | |||
| Total | 92 | 33 | 35.9 | 26.8–46.1 | ||||
| Holeta | BHV1 | 30 | 16 | 53.3 | 14.7–88.3 | 1 | 54.40 | < 0.01 |
| BVDV | 30 | 22 | 73.3 | 55.0-86.1 | 2.4 | |||
| N. caninum | 30 | 2 | 6.7 | 0.6–45.4 | 0.06 | |||
| C. burnetii | 30 | 1 | 3.3 | 0.2–40.0 | 0.03 | |||
| Total | 120 | 41 | 34.2 | |||||
| A.berga | BHV1 | 56 | 52 | 92.9 | 66.7–98.8 | 53.2 | 128.9 | < 0.01 |
| BVDV | 56 | 11 | 19.6 | 12.2–32.1 | 1 | |||
| N. caninum | 56 | 1 | 1.8 | 0.1–22.0 | 0.07 | |||
| C. burnetii | 56 | 0 | 0 | - | - | |||
| Total | 224 | 64 | 28.6 | 23.0-34.8 | ||||
| Ambo | BHV1 | 17 | 8 | 47.1 | 5.1–93.7 | 4.1 | 3.45 | 0.063 |
| BVDV | 17 | 0 | 0 | - | - | |||
|
N. caninum C. burnetii |
17 17 |
3 0 |
17.6 0 |
5.8–42.7 - |
1 | |||
| Total | 68 | 11 | 16.2 | 9.2–26.9 | ||||
| Mekelle | BHV1 | 38 | 8 | 21.1 | 3.3–67.3 | 1.4 | 7.27 | 0.026 |
| BVDV | 38 | 6 | 15.9 | 7.3–31.0 | 1 | |||
|
N. caninum C. burnetii |
38 38 |
1 0 |
2.6 0 |
0.1–36.1 - |
0.14 - |
|||
| Total | 152 | 15 | 9.9 | 6.0-15.7 |
* A. seroprevalence - apparent seroprevalence, CI- confidence interval, OR- odds ratio
NB. While analyzing, the model excludes those that did not have at least one seropositive sample. As a result, the chi-square and p values are calculated from the samples that have at least one antibody positive sample