Table 2.
Occurrence of fatty liver and subclinical ketosis during the first five weeks postpartum.
| Metabolic disorders | n | Frequency, % |
|---|---|---|
| Liver TAG1, % fresh basis | ||
| ≤5 | 8 | 27.6 |
| 5 | 21 | 72.4 |
| Subclinical ketosis2 | ||
| Positives | 25 | 73.5 |
| First week | 14 | 41.2 |
| Third week | 11 | 32.3 |
| Negatives | 9 | 26.5 |
| Total | 34 | 100.0 |
1Cows sampled by liver biopsy at 1st or 5th week postpartum. n: number of cows. Frequency = (affected cows/total number of sampled cows) × 100. 2Subclinical ketosis: positives: color scale that corresponded to milk β-hydroxybutyrate concentrations ≥200 μmol/L. Negatives: color scale that corresponded to milk β-hydroxybutyrate concentrations ≤100 μmol/L.