Items | Groups1 | SEM | P-value2 | ||||
---|---|---|---|---|---|---|---|
LSCC | MSCC | HSCC | Hs | Wk | Hs*Wk | ||
Number of cows (head) | 23 | 20 | 33 | – | – | – | – |
Parity | 2.8 | 2.9 | 2.7 | 0.17 | 0.26 | – | – |
SCC (103/mL) | 77.6 | 346.0 | 1460.5 | – | – | – | – |
Milk yield (kg) | 34.3a | 31.4b | 26.5b | 0.71 | < 0.01 | < 0.01 | 0.96 |
Milk composition (%) | |||||||
 Milk fat | 4.85 | 5.07 | 4.88 | 0.11 | 0.36 | < 0.01 | 0.53 |
 Milk protein | 3.24b | 3.26b | 3.35a | 0.03 | 0.02 | < 0.01 | 0.48 |
 Milk lactose | 4.96b | 4.97a | 4.80b | 0.03 | < 0.01 | < 0.01 | 0.75 |
 Total solids | 13.2 | 13.4 | 13.2 | 0.12 | 0.36 | < 0.01 | 0.72 |
Milk urea nitrogen (mgN/dL) | 12.2a | 10.4b | 8.5b | 0.52 | < 0.01 | 0.43 | 0.95 |