Table 3 Evaluation of factors related to herd health before drying off and post-calving on the studied farms
|  |  | SCC (× 1000) (cells/mL) | Milk yield (kg) | SCC > 200/000 (cells/mL) (%, n) | Clinical mastitis (%, n) | Parity | Number | |||
|---|---|---|---|---|---|---|---|---|---|---|
Before drying off | Post-calving | Before drying off | Post-calving | Before drying off | Post-calving | Post-calving | Â | Â | ||
Farm 1 | Control | 318.3 | 229.7 | 28.5 | 39.5 | 100 (50/50) | 42 (21/50) | 16 (8/50) | 1 2 3 ≥ 4 | 0 27 13 10 |
|  | Treatment | 309 | 239 | 30.7 | 37.7 | 100 (51/51) | 27 (14/51) | 5 (3/51) | 1 2 3 ≥ 4 | 0 19 12 20 |
Farm 2 | Control | 320.9 | 302.3 | 24.2 | 35.8 | 100 (50/50) | 36 (18/50) | 16 (8/50) | 1 2 3 ≥ 4 | 2 13 17 18 |
|  | Treatment | 540.9 | 284.8 | 22.3 | 32.6 | 100 (37/37) | 35 (13/37) | 8 (3/37) | 1 2 3 ≥ 4 | 3 5 11 18 |
Farm 3 | Control | 449.5 | 274.3 | 31.6 | 42.5 | 100 (51/51) | 35 (18/51) | 19 (10/51) | 1 2 3 ≥ 4 | 0 19 11 21 |
|  | Treatment | 311.4 | 157.4 | 28.7 | 43.6 | 100 (52/52) | 19 (10/52) | 9 (5/52) | 1 2 3 > 4 | 1 14 18 19 |