Table 1.
Main characteristics and blood biochemical parameters in normal control cows (NC), cows with subclinical ketosis (SK), and cows with clinical ketosis (CK)
| Parameters | CK | SK | NC |
|---|---|---|---|
| Number |
24 |
33 |
24 |
| Days in milk |
12±5 |
14±6 |
16±6 |
| Age |
3±1 |
3±1 |
4±2 |
| Parity |
2±1 |
2±1 |
2±1 |
| MY (kg/d) |
32.1±7.8Aa |
35.2±7.2b |
37.0±6.2Cc |
| BCS |
3.05±0.31a |
3.11±0.35 ab |
3.16±0.37b |
| Glc (mmol/L) |
1.90 ± 0.70A |
2.70±0.63B |
3.37±0.58C |
| BHBA (mmol/L) |
2.49±0.60A |
1.22±0.17B |
0.82±0.12C |
| CHO (mmol/L) |
2.36±0.70 |
2.45±0.68 |
1.98±0.80 |
| AST (U/L) |
113.13±23.74 |
113.29±27.46 |
102.58±28.58 |
| TG (mmol/L) | 0.13±0.40 | 0.16±0.50 | 0.13±0.57 |
Data are shown as mean ± SD, p < 0.05 or 0.01 among CK, SK, and NC groups with different lowcase (a, b, c) or capital letters (A, B, C).
MY milk yield, BCS body condition score, DMI dry matter intake, Glc glucose, BHBA β-hydroxyl acid, CHO cholerol, AST aspartate aminotransferase, TG triglyceride.