Table 9.
Number of comorbidities and laboratory values (means) in cows with LDA, RDA and AV
| Variable | Number of comorbidities | Additional tests | P | ||||
|---|---|---|---|---|---|---|---|
| None | One | Two | Three | Four to eight | |||
| Haematocrit (%) (n = 1979) | 37 (n = 250) | 36 (n = 624) | 36 (n = 589) | 36 (n = 326) | 35a (n = 190) | BoCo | < 0.05 |
| Leukocytes (/µL) (n = 1973) | 9116 (n = 249) | 8680 (n = 623) | 8688 (n = 587) | 8311a (n = 325) | 8284a (n = 189) | BoCo | < 0.05 |
| Total protein (g/L) (n = 1968) | 77 (n = 250) | 76 (n = 620) | 77 (n = 583) | 76 (n = 326) | 75 (n = 189) | – | – |
| Fibrinogen (g/L) (n = 1965) | 5.5 (n = 249) | 5.7 (n = 618) | 5.7 (n = 583) | 5.7 (n = 326) | 6.0 (n = 189) | – | – |
| Urea (mmol/L) (n = 1974) | 7.3 (n = 247) | 6.6 (n = 623) | 6.5 (n = 588) | 5.7a (n = 326) | 5.6a (n = 190) | – | – |
| Calcium (mmol/L) (n = 1608) | 2.2 (n = 186) | 2.1 (n = 485) | 2.1 (n = 490) | 2.1 (n = 283) | 2.1 (n = 164) | – | – |
| Inorg. phosphate (mmol/L) (n = 1610) | 1.4 (n = 187) | 1.4 (n = 487) | 1.4 (n = 489) | 1.4 (n = 283) | 1.3 (n = 164) | – | – |
| Potassium (mmol/L) (n = 1972) | 3.4 (n = 246) | 3.4 (n = 623) | 3.3 (n = 587) | 3.4 (n = 326) | 3.4 (n = 190) | – | – |
| Chloride (mmol/L) (n = 1970) | 94 (n = 247) | 95 (n = 623) | 94 (n = 586) | 95 (n = 324) | 96b (n = 190) | BoCo | < 0.05 |
| Bilirubin (µmol/L) (n = 1962) | 11.8 (n = 242) | 13.0 (n = 619) | 14.3a (n = 587) | 16.4a (n = 324) | 16.9 (n = 190) | – | – |
| AST (U/L) (n = 1975) | 180 (n = 248) | 198 (n = 622) | 199 (n = 589) | 235a (n = 326) | 247a (n = 190) | – | – |
| γ-GT (U/L) (n = 1975) | 51 (n = 248) | 53 (n = 623) | 64 (n = 588) | 63 (n = 326) | 75 (n = 190) | – | – |
| GLDH (U/L) (n = 1440) | 135 (n = 140) | 144 (n = 430) | 151 (n = 448) | 143 (n = 264) | 157 (n = 158) | – | – |
| SDH (U/L) (n = 1422) | 97 (n = 139) | 98 (n = 426) | 85 (n = 439) | 82 (n = 262) | 89 (n = 156) | – | – |
| Blood pH (n = 1812) | 7.42 (n = 221) | 7.42 (n = 558) | 7.43 ( = 545) | 7.42 (n = 312) | 7.42 (n = 176) | ||
| – | – | ||||||
| Bicarbonate (mmol/L) (n = 1817) | 30 (n = 223) | 29 (n = 559) | 30 (n = 548) | 29 (n = 311) | 28a (n = 176) | ||
| Base excess (mmol/L) (n = 1810) | 6.1 (n = 222) | 5.6 (n = 558) | 5.8 (n = 545) | 5.1 (n = 311) | 3.4a (n = 174) | – | – |
| Rumen chloride (mmol/L) (n = 1761) | 36 (n = 220) | 38 (n = 565) | 40 (n = 524) | 38 (n = 282) | 35 (n = 170) | – | – |
aDifference to cows with no comorbidities, P < 0.05, Kruskal Wallis test with Bonferroni correction
bDifference to cows with 2 comorbidities, P < 0.05, Kruskal Wallis test with Bonferroni correction