| Variable | CO group | M group | P value |
|---|---|---|---|
| (n = 8) | (n = 21) | ||
| mean ± SD | mean ± SD | ||
| Milk production (kg/d) | 50.5 ± 5.0 | 33.4 ± 7.7 | < 0.001 |
| Fat (%) | 3.19 ± 0.53 | 3.69 ± 0.56 | < 0.05 |
| Protein (%) | 3.25 ± 0.17 | 3.19 ± 0.32 | > 0.05 |
| Lactose (%) | 5.01 ± 0.21 | 4.95 ± 0.23 | > 0.05 |
| SCC (103 cells/ml) | 71 ± 80 | 97 ± 98 | > 0.05 |
| Urea (mg/100 ml) | 21.8 ± 5.8 | 23.2 ± 4.4 | > 0.05 |