Table 1.
Means for titer, calf age, and calf weight at 4 time points for bovine viral diarrhea virus type 1 (BVDV1), bovine viral diarrhea virus type 2 (BVDV2), bovine respiratory syncytial virus (BRSV), and bovine herpesvirus 1 (BHV1)
| Item | No. of calves | Titer, log2 | Range | SD | Age, d | SD | Range | BW, kg | SD |
|---|---|---|---|---|---|---|---|---|---|
| BVDV1 | |||||||||
| Before vaccination1 | 622 | 2.68 | 0–12.3 | 2.68 | 111.8 | 27.9 | 28–169 | 133.4 | 30.6 |
| Initial vaccination | 1,648 | 2.14 | 0–10.5 | 2.15 | 138.0 | 29.4 | 54–205 | 149.2 | 34.5 |
| Booster vaccination | 1,488 | 1.5 | 0–9.3 | 1.7 | 158.6 | 29.7 | 76–229 | 173.8 | 39.7 |
| Final | 1,348 | 2.3 | 0–9.3 | 1.8 | 177.9 | 29.1 | 99–250 | 190.1 | 40.0 |
| Decay,2 titer units/d | 622 | −0.023 | 0.06 | ||||||
| BVDV2 | |||||||||
| Before vaccination1 | 1,137 | 4 | 0–10.5 | 2.32 | 109.1 | 28.7 | 28–165 | 145.3 | 34.1 |
| Initial vaccination | 2,177 | 3.24 | 0–11.2 | 2.38 | 127.0 | 35.0 | 30–205 | 143.2 | 37.5 |
| Booster vaccination | 1,927 | 2.5 | 0–11.3 | 1.98 | 152.9 | 31.4 | 57–229 | 164.3 | 39.7 |
| Final | 1,917 | 4.17 | 0–9.16 | 1.91 | 174.9 | 30.9 | 78–250 | 182.3 | 42.6 |
| Decay,2 titer units/d | 1,137 | −0.041 | 0.045 | ||||||
| BRSV | |||||||||
| Initial vaccination | 1,632 | 1.08 | 0–6 | 1.81 | 136.3 | 29.6 | 53–205 | 150.5 | 36.1 |
| Booster vaccination | 1,310 | 3.73 | 3–6 | 0.81 | 151.1 | 28.0 | 76–229 | 170.9 | 39.1 |
| Final | 1,483 | 5 | 3–6.46 | 0.89 | 177.3 | 35.0 | 99–250 | 189.5 | 40.3 |
| BHV1 | |||||||||
| Initial vaccination | 1,621 | 0.87 | 0–6 | 1.45 | 136.3 | 29.6 | 53–205 | 150.3 | 36.1 |
| Booster vaccination | 1,351 | 2.1 | 0–6 | 1.79 | 156.8 | 29.7 | 76–229 | 170.4 | 38.9 |
| Final | 1,377 | 2.98 | 0–6.58 | 2.3 | 177.5 | 34.0 | 99–250 | 189.6 | 40.2 |
1
Viral neutralization titers to BRSV and BHV1 were not measured in prevaccination samples; therefore, results for before vaccination and decay are reported for only BVDV1 and BVDV2.
2
Titer reported as titer per day change for maternal decay.