Table 1.
Virus neutralization antibody titers in sera after vaccination
| Group | Samples | 20 weeks | 31 weeks |
|---|---|---|---|
| Control |
1 |
<16 |
<16 |
| 2 |
<16 |
<16 |
|
| 3 |
<16 |
<16 |
|
| 4 |
<16 |
<16 |
|
| 5 |
<16 |
<16 |
|
| 6 |
<16 |
<16 |
|
| 7 |
<16 |
<16 |
|
| Germanium biotite | 1 |
<16 |
16 |
| 2 |
16 |
<16 |
|
| 3 |
16 |
32 |
|
| 4 |
16 |
26 |
|
| 5 |
16 |
<16 |
|
| 6 |
16 |
<16 |
|
| 7 |
<16 |
26 |
|
| 8 | <16 | 32 |
The selected sera were taken from the same cattle in each collection date. All cattle were 6-month-old when the first vaccination was conducted. The sera selected from the germanium biotite group show a higher virus neutralization antibody titer than the control group.