Table 2.
Descriptive statistics of farrowing duration of different total number of born and number born alive piglets.
| Litter Size | Number of Litters | Farrowing Duration (min) | CV (%) 1 |
|---|---|---|---|
| Total Number of Born/Number Born Alive | |||
| 5 | 418/573 | 252.80 ± 72.75/257.49 a ± 76.8 | 28.78/29.83 |
| 6 | 673/767 | 249.43 ± 69.29/251.90 ab ± 72.61 | 27.78/28.83 |
| 7 | 889/1085 | 248.34 ± 67.93/251.96 ab ± 69.26 | 27.35/27.49 |
| 8 | 1685/1823 | 252.74 ± 69.33/253.41 ab ± 69.17 | 27.43/27.29 |
| 9 | 1809/2283 | 251.64 ± 69.86/253.47 ab ± 69.29 | 27.76/27.34 |
| 10 | 4314/4586 | 247.93 ± 66.46/249.54 ab ± 67.94 | 26.81/27.23 |
| 11 | 4443/4737 | 250.63 ± 67.27/249.68 ab ± 67.38 | 26.84/26.99 |
| 12 | 6469/6751 | 247.90 ± 65.86/248.89 ab ± 66.03 | 26.57/26.53 |
| 13 | 4643/4077 | 249.81 ± 68.08/247.19 bc ± 65.89 | 27.25/26.65 |
| 14 | 3494/2983 | 250.32 ± 66.76/248.83 ab ± 67.15 | 26.67/26.99 |
| 15 | 1882/1524 | 251.81 ± 68.67/252.00 ab ± 68.02 | 27.27/26.99 |
| 16 | 960/676 | 260.09 ± 70.51/256.62 a ± 67.61 | 27.11/26.34 |
| 17 | 326/239 | 251.65 ± 68.57/246.21 bc ± 65.05 | 27.25/26.42 |
| 18 | 177/96 | 250.82 ± 77.24/239.98 c ± 65.88 | 30.79/27.45 |
| 19 | 14/- | 270.17 ± 77.51/- | 28.69/- |
| 20 | 4/- | 274.95 ± 99.80/- | 36.30/- |
1 CV represents coefficient of variation of duration of farrowing. a–c Values within a column with different superscripts differ significantly at p < 0.05.