Table 4 Association of gestation length, calving interval and postpartum days with other variables
|  | Gestation length in days (N = 2052) | Calving interval in days (N = 2052) | Postpartum days (N = 2052) | ||||
|---|---|---|---|---|---|---|---|
Variables | Categories | EMM (days) ± SE | p-value | EMM (days) ± SE | p-value | EMM (days) ± SE | p-value |
Genotype | Local | 278.1 ± 0.3962 | 0.1073 | 439 ± 6.79 | 0.0259 | 162 ± 6.36 | 0.0118 |
Crossbred | 277.4 ± 0.1572 |  | 422 ± 2.72 |  | 145 ± 2.59 |  | |
Calving type | PTC | 272.8 ± 0.1206 | <0.0001 | 421 ± 3.43 | 0.1255 | 148 ± 3.42 | 0.7518 |
FTC | 282.9 ± 0.1311 |  | 429 ± 3.75 |  | 147 ± 3.74 |  | |
Fertility | Normal | 277.5 ± 0.4516 | 0.8138 | 369 ± 3.25 | <.0001 | 90.9 ± 3.02 | < 0.0001 |
Subfertility | 277.6 ± 0.3240 |  | 453 ± 2.33 |  | 176.8 ± 2.19 |  | |
Parity | Prim/Heifer | 277.0 ± 0.3759 | 0.2287 | – | – | – | – |
Multiparous | 277.6 ± 0.2599 |  | 425 ± 2.53 |  | 147 ± 2.41 |  | |
NSPC | First AI | 277.1 ± 0.1558 | < 0.001 | 419 ± 2.74 | < 0.001 | 142 ± 2.72 | < 0.001 |
Second AI | 279.8 ± 0.4153 |  | 450 ± 6.26 |  | 173 ± 6.20 |  | |
Third AI | 278.1 ± 1.2094 |  | 461 ± 17.14 |  | 198 ± 16.98 |  | |
AI Season | Summer | 278.1 ± 0.2679 | < 0.001 | 420 ± 4.82 | 0.3924 | 143 ± 4.51 | 0.6715 |
Spring | 278.5 ± 0.2904 |  | 428 ± 4.93 |  | 149 ± 4.73 |  | |
Winter | 276.8 ± 0.2917 |  | 430 ± 5.12 |  | 150 ± 4.83 |  | |
Autumn | 276.2 ± 0.3138 |  | 420 ± 5.48 |  | 148 ± 5.31 |  | |
Calving season | Summer | 278.8 ± 0.2867 | < 0.001 | 428 ± 4.83 | 0.4577 | 150 ± 4.81 | 0.3757 |
Spring | 276.7 ± 0.2946 |  | 429 ± 5.12 |  | 153 ± 5.09 |  | |
Winter | 275.9 ± 0.3086 |  | 422 ± 5.55 |  | 146 ± 5.52 |  | |
Autumn | 278.1 ± 0.2669 |  | 419 ± 4.87 |  | 141 ± 4.84 |  | |