Table 4.
Distribution of the infectious disease agents observed in adult dairy cows with bovine respiratory disease
| Positive immunoreactivity for single and/or combined infections disease pathogens | Number of cows (n = 35) | Agea |
|---|---|---|
| BVDV, BoHV‐1, BRSV, BPIV‐3, M. bovis | 1 | 4 |
| BVDV, BoHV‐1, BRSV, M. bovis | 1 | 5 |
| BRSV, BoHV‐1, BPIV‐3, M. bovis | 1 | 5 |
| BVDV, BRSV, BPIV‐3 | 2 | NI |
| BVDV, BoHV‐1, M. bovis | 3 | 4, 4, 5 |
| BRSV, BoHV‐1, M. bovis | 1 | NI |
| BVDV, BoHV‐1 | 4 | 2, NI |
| BVDV, BPIV‐3 | 1 | 2 |
| BVDV, M. bovis | 1 | 2 |
| BRSV, M. bovis | 2 | 2, 5 |
| BoHV‐1, M. bovis | 2 | 2, NI |
| BVDV | 5 | 2, 2, NI, NI, 4 |
| M. bovis | 4 | 2, 3, NI, NI |
| BRSV | 3 | NI, 2, 2 |
| BoHV‐1 | 1 | 3 |
| Negative to all | 3 | 2, 2, 2 |
NI: not informed.
Abbreviations: BoHV‐1: bovine alphaherpesvirus type 1; BPIV‐3: bovine parainfluenza virus type 3; BRSV: bovine respiratory syncytial virus; BVDV: bovine viral diarrhea virus; M. bovis: Mycoplasma bovis.
Estimated age based on number of calving seasons.