Table 9.
Effects of dietary fat source and essential fatty acid intake on subsequent reproductive performance of sows1
| Trait | Control | CWG | SO | Combination | SEM | P |
|---|---|---|---|---|---|---|
| Wean to estrus interval, d | 4.7 | 4.5 | 4.6 | 4.7 | 0.14 | 0.790 |
| Bred by day 7, % | 94.8 | 95.9 | 95.1 | 95.5 | 0.81 | 0.749 |
| Bred by day 12, % | 95.6 | 96.4 | 95.8 | 96.0 | 0.74 | 0.838 |
| Farrowing rate, % | 87.9 | 87.2 | 88.9 | 86.8 | 1.25 | 0.564 |
| Farrowing performance | ||||||
| Subsequent litters, n | 648 | 637 | 655 | 637 | — | — |
| Total born, n | 14.6 | 14.6 | 14.4 | 14.4 | 0.15 | 0.563 |
| Born alive, % | 91.2b | 92.3a | 91.9ab | 91.3ab | 0.42 | 0.012 |
| Stillborn, % | 6.6a | 5.8b | 6.3ab | 7.1a | 0.35 | 0.001 |
| Mummy, % | 2.1a | 1.9ab | 1.7ab | 1.5b | 0.16 | 0.024 |
Means within row with different superscripts differ (P < 0.05).
A total of 3,451 sows and their litters were used over 28-d experimental periods with 850 to 874 sows per treatment. Experimental treatments contained supplemental fat at 0.5% (Control), 3% (CWG or SO), or 5% (Combination).