|  | Wk pp |  | ||
---|---|---|---|---|---|
4 | 8 | 20 | 44 | P-value | |
LSM ± SEM | LSM ± SEM | LSM ± SEM | LSM ± SEM |  | |
Live body weight (kg) | 640.74 ± 21.31a | 643.16 ± 23.07a | 685.01 ± 21.15a | 741.49 ± 25.21b | < 0.0001 |
Variation of empty body weight (kg/d) | −14.05 ± 2.82a | − 13.86 ± 2.57a | − 8.26 ± 2.04a | − 0.71 ± 2.58b | < 0.0001 |
Milk yield (kg/d) | 39.20 ± 2.27a | 36.12 ± 2.97a | 32.21 ± 1.48a | 20.78 ± 1.60b | < 0.0001 |
Dry matter intake (kg/d) | 18.67 ± 1.56a | 20.83 ± 0.76a | 21.41 ± 1.05a | 21.77 ± 0.69b | 0.09 |
Energy balance (Mcal/d) | − 4.88 ± 1.72a | −1.76 ± 1.62ab | −0.97 ± 1.35ab | 2.76 ± 0.92b | 0.001 |
Back fat thickness (cm) | 0.65 ± 0.15a | 0.43 ± 0.12ab | 0.34 ± 0.11b | 0.45 ± 0.09b | 0.007 |
Non esterified fatty acid (mmol/L) | 1103.98 ± 158.30a | 816.58 ± 137.67ab | 509.33 ± 75.00b | 185.83 ± 29.48c | < 0.0001 |
Glucose (mmol/L) | 7.71 ± 0.39a | 8.17 ± 0.50ab | 9.22 ± 0.44b | 9.51 ± 0.57b | 0.01 |
Insulin (ng/mL) | 0.24 ± 0.06a | 0.33 ± 0.05ab | 0.49 ± 0.06bc | 0.55 ± 0.02c | 0.0005 |