Table 2.
Effects of maternal PRRSV infection and dietary treatment on offspring mortality
| Item | Treatment | SEM | P-value | ||
|---|---|---|---|---|---|
| CON | POS | ISF | |||
| Litter1, n | 7 | 6 | 4 | ||
| Total piglets per litter2, n | 14 | 12 | 12 | 1.76 | 0.54 |
| Piglets born alive, n | 14 | 9 | 10 | 1.81 | 0.08 |
| Piglets born alive, % | 98.19a | 75.05b | 77.54b | 5.84 | 0.04 |
| Weight of piglets born alive, kg | 1.47a | 1.11b | 1.18b | 0.11 | 0.02 |
| Stillborn piglets, n | 0a | 3b | 3b | 0.66 | 0.04 |
| Mummy, n | 0a | 5b | 3ab | 1.26 | 0.03 |
| Pigs weaned per litter, n | 11a | 6b | 7b | 1.54 | 0.04 |
| Weight of piglets weaned, kg | 6.52 | 4.82 | 5.39 | 0.58 | 0.09 |
| Survival during suckling period3, % | 94.5 | 76.33 | 80.77 | 5.55 | 0.15 |
LS means within a row having differing superscripts are statistically different (P < 0.05).
Litter served as the experimental unit.
Total piglets per litter = no. piglets born alive + no. of stillborns.
Survival during suckling period, % = (no. of piglets successfully weaned/ total piglets per litter excluding piglets euthanized at PND 3 for sample collection) × 100.
Abbreviations: CON, control treatment (unsupplemented diet without infection); POS, positive control (unsupplemented diet with infection); ISF, isoflavone-supplemented treatment (with infection); SEM, standard error of the mean.