Table 1.
Distribution of sow on the basis of body weight (kg) at 109 d of gestation during different parities and sow retention rate1 (%)
| Parity | Weight (kg) of sows at d 109 of gestation in parity 1 | p-value | |||||
|---|---|---|---|---|---|---|---|
|
| |||||||
| 190 | 200 | 210 | 220 | 230 | 240 | ||
| 1 | 118 | 112 | 109 | 92 | 69 | 85 | |
| 2 | 105(88.98) | 97(86.60) | 100(91.74) | 74(80.43) | 53(76.81) | 71(83.53) | 0.32 |
| 3 | 91(77.12) | 84(75.00) | 96(88.07) | 64(69.56) | 45(65.22) | 60(70.59) | 0.05 |
| 4 | 82(69.49) | 72(64.29) | 82(75.23) | 52(56.52) | 36(52.17) | 51(60.00) | 0.02 |
| 5 | 68(57.63) | 59(52.68) | 68(62.39) | 39(42.39) | 29(42.03) | 39(45.88) | 0.01 |
| 6 | 48(40.68) | 40(35.71) | 43(39.45) | 26(28.26) | 21(30.43) | 24(28.24) | 0.03 |
1
Sow retention rate (%) in brackets. Sow culling rate (%) = 100–retention rate.