Table 3 Values for the blood chemical parameters analyzed once a week during 4 consecutive weeks in 5 heifers on a low energy diet (LO) and 5 heifers on a high energy diet (HI). Mean and SD within bars.
| Â | WEEK | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Â | 0 | 1 | 2 | 3 | 4 | |||||
| Â | LO | HI | LO | HI | LO | HI | LO | HI | LO | HI |
Insulin, μU/ml | 5.6a (1.1) | 3.8 (1.2) | 5.4 (0.2) | 4.7 (0.7) | 5.2 (0.2) | 5.0 (1.8) | 3.5 (0.9) | 5.6 (1.8) | 5.3 (1.1) | 4.9 (1.9) |
Glucose, mmol/l | 4.9 (0.5) | 4.9 (0.6) | 5.1 (0.3) | 5.4 (0.4) | 5.2 (0.5) | 5.4 (0.4) | 4.7a (0.1) | 5.6 (0.2) | 4.8a (0.3) | 5.5 (0.5) |
Protein, g/l | 70.4 (3.0) | 66.0 (3.5) | 71.2 (5.2) | 65.8 (1.8) | 68.0 (5.5) | 62.4 (4.4) | 66.8 (4.5) | 64.8 (3.6) | 68.6 (4.5) | 68.4 (0.6) |
Urea, mmol/l | 2.7 (0.6) | 2.9 (0.3) | 1.6 (0.4) | 2.0 (0.2) | 1.5a (0.2) | 2.0 (0.2) | 1.5a (0.3) | 2.5 (0.6) | 2.5 (0.7) | 3.1 (0.6) |
NEFA, mmol/l | 0.20 (0.12) | 0.12 (0.04) | 0.11 (0.04) | 0.09 (0.03) | 0.09 (0.08) | 0.12 (0.04) | 0.13 (0.03) | 0.10 (0.03) | 0.09a (0.01) | 0.14 (0.04) |
Cholesterol, mmol/l | 1.7 (0.3) | 2.1 (0.3) | 2.1 (0.2) | 2.1 (0.3) | 1.9 (0.2) | 2.2 (0.4) | 1.6 (0.3) | 1.8 (0.7) | 1.5 (0.3) | 1.7 (0.4) |