Parameter | Treatment1 | SEM | P<2 | ||||
T3.5 | T7.0 | T10.5 | Treat2 | Lineal3 | Quadratic3 | ||
Milk, kg d−1 | 30.8c | 33.3b | 35.0a | 1.2 | 0.01 | 0.01 | 0.35 |
4% FCM, kg d−1 | 26.8b | 29.0a | 30.2a | 1.1 | 0.01 | 0.01 | 0.40 |
ECM, kg d−1 | 26.7b | 29.0a | 30.2a | 1.0 | 0.01 | 0.01 | 0.37 |
Fat, kg cow−1 d−1 | 0.97b | 1.05ab | 1.08a | 0.04 | 0.02 | 0.01 | 0.51 |
Fat, % | 3.15 | 3.16 | 3.09 | 0.08 | 0.79 | 0.63 | 0.64 |
Protein, kg cow−1 d−1 | 0.94c | 1.02b | 1.08a | 0.03 | 0.01 | 0.01 | 0.35 |
Protein, % | 3.05 | 3.08 | 3.10 | 0.04 | 0.08 | 0.03 | 0.60 |
Lactose, % | 4.85b | 4.91a | 4.94a | 0.03 | 0.01 | 0.01 | 0.43 |
TS, % | 11.73 | 11.84 | 11.82 | 0.11 | 0.57 | 0.42 | 0.50 |
NFS, % | 8.58b | 8.69a | 8.74a | 0.06 | 0.01 | 0.01 | 0.34 |
Urea, % | 0.046a | 0.045a | 0.043b | 0.001 | 0.01 | 0.01 | 0.53 |
Casein, % | 2.42b | 2.44b | 2.47a | 0.01 | 0.01 | 0.01 | 0.62 |