Calving interval | N | Mean ± SE | 95% confidence interval | |
Lower Bound | Upper Bound | |||
Agro-ecology |
|
|
|
|
Highland | 65 | 16.18 ± 0.41 | 15.565 | 17.195 |
Midland | 66 | 15.76 ± 0.41 | 14.956 | 16.567 |
Lowland | 40 | 16.67 ± 0.51 | 15.664 | 17.686 |
Sig. |
| 0.172 |
|
|
Breed |
|
|
|
|
Local cow | 120 | 16.02 ± 0.29b | 15.442 | 16.608 |
Cross breed cow | 51 | 14.44 ± 0.43a | 12.546 | 17.337 |
Sig. |
| 0.024 |
|
|
Agro-ecology*breed |
|
|
|
|
Sig. |
| 0.472 |
|
|
Overall | 171 | 16.19 ± 0.25 | 14.691 | 16.692 |