Research Article
Assessment of Major Causes of Calf Mortality in Urban and Periurban Dairy Production System of Ethiopia
Table 4
Logistic regression analysis of management-related risk factors for mortality of calves in the dairy production system.
| Variables | Category | Mortality rate n(%) | Odds ratio (OR) | 95% CI (OR) | value |
| Time of birth | Day | 193 (11.3) | 1.0 | | | Night | 116 (6.8) | 0.95 | 0.60, 1.52 | 0.835 |
| Delivery status | Normal | 107 (6.3) | 1.0 | | | Assisted | 9 (0.5) | 1.05 | 0.60, 1.98 | 0.886 |
| Dam parity | Primiparous | 107 (6.3) | 1.0 | | | Multiparous | 194 (11.4) | 1.08 | 0.60, 1.81 | 0.775 |
| Herd size | 1–10 | 96 (5.6) | 1.0 | | | 10–20 | 61 (3.6) | 1.13 | 0.63, 2.02 | 0.686 | 20–30 | 112 (6.6) | 1.63 | 0.83, 3.18 | 0.157 | >30 | 40 (2.3) | 1.94 | 0.65, 5.78 | 0.236 |
| Calving facility | Yes | 37 (2.2) | 1.0 | | | No | 272 (16.0) | 0.76 | 0.3, 1.61 | 0.470 |
| Navel treatment | Practiced | 77 (4.5) | 1.0 | | | Not practiced | 232 (13.6) | 0.41 | 0.23, 0.73 | 0.003 |
| Colostrum feeding | Full suckling | 301 (17.7) | 1.0 | | | Restricted | 8 (0.5) | 0.56 | 0.20, 1.53 | 0.256 |
| Colostrum and milk feeding method | Hand feeding | 216 (12.7) | 1.0 | | | Suckling | 93 (5.5) | 0.48 | 0.28, 0.83 | 0.008 |
|
|
Significantly different ( ). |