| Biological Fluids | Groups of Animals | ||||||
| BLV+ | BTub+ | Control | Total | ||||
| December | March | December | March | December | March | ||
| Blood | 7 | 9 | 9 | 9 | 10 | 9 | 53 |
| Serum | 4 | 8 | 10 | 8 | 18 | 10 | 58 |
| Milk | 14 | 9 | 10 | 8 | 21 | 10 | 72 |
| Overall: 183 | |||||||