Table 7.
Effects of increasing standardized ileal digestible (SID) lysine in lactation diets on litter and subsequent performance, Exp. 11
| SID Lysine, % | Probability, P < | ||||||
|---|---|---|---|---|---|---|---|
| Item | 0.80 | 0.95 | 1.10 | 1.25 | SEM | Linear | Quadratic |
| Litter size, n | |||||||
| d 2 | 13.1 | 13.3 | 13.0 | 12.3 | 0.70 | 0.983 | 0.953 |
| d 10 | 13.1 | 13.3 | 13.0 | 12.3 | 0.70 | 0.983 | 0.953 |
| Wean | 12.9 | 13.1 | 12.9 | 12.3 | 0.70 | 0.916 | 0.988 |
| Litter weight, kg | |||||||
| d 2 | 19.2 | 19.4 | 18.5 | 18.7 | 0.49 | 0.263 | 0.965 |
| d 10 | 42.0 | 41.6 | 41.4 | 41.5 | 0.53 | 0.451 | 0.528 |
| Wean | 69.5 | 69.0 | 67.4 | 67.7 | 1.31 | 0.120 | 0.728 |
| Litter gain, kg | |||||||
| d 2 to 10 | 22.8 | 22.5 | 21.9 | 22.1 | 0.57 | 0.267 | 0.617 |
| d 10 to wean | 27.6 | 27.7 | 25.7 | 26.1 | 1.22 | 0.194 | 0.899 |
| d 2 to wean | 50.2 | 49.9 | 48.0 | 48.4 | 1.36 | 0.209 | 0.766 |
| Litter ADG d 2 to wean, g | 2,984 | 2,959 | 2,896 | 2,938 | 57.3 | 0.374 | 0.545 |
| Subsequent performance2 | |||||||
| Total piglets born per sow farrowed, n | 14.3 | 16.4 | 15.2 | 15.7 | 0.95 | 0.603 | 0.394 |
| Born alive, % | 94.2 | 89.8 | 91.0 | 93.7 | 2.05 | 0.955 | 0.054 |
| Stillborn, % | 5.0 | 7.2 | 7.0 | 5.0 | 1.73 | 0.998 | 0.193 |
| Mummy, % | 0.6 | 3.0 | 1.5 | 1.0 | 1.03 | 0.960 | 0.090 |
1A total of 111 primiparous sows (DNA 241, DNA Genetics, Columbus, NE) across 4 farrowing groups were used in a 21-d trial with 27 to 29 sows per dietary treatment.
2Number of sows included for subsequent performance were 19, 22, 26, and 20 for dietary treatments of 0.80, 0.95, 1.10, and 1.25% SID Lys, respectively.