Table 2.
Causes of calf mortality in the dairy production system.
Cause of mortality | Relative contribution of causes, proportion, n (%)a | Cause-specific mortality (95% CI)b |
---|---|---|
Disease | 229 (73.2) | 13.4 (7.8, 19.0) |
| ||
Small and weak at birth | 18 (5.8) | 1.1 (0.5, 1.5) |
| ||
Bloating | 11 (3.5) | 0.7 (0.3, 1.0) |
| ||
Accidents and sudden deaths | 29 (9.3) | 1.7 (1.1, 2.3) |
| ||
Dystocia | 6 (1.9) | 0.4 (0.1, 0.6) |
| ||
Malnutrition | 12 (3.8) | 0.7 (0.3, 1.1) |
aEach cause expressed as number of calve deaths due to the specific cause relative to the number of deaths (n = 313). bCalculated calf mortality rate due to each cause relative to the number of alive born (n = 1706).