Table 8.
The effect of dietary SID-Lys:ME ratio on sow body weight change in lactation (Exp. 2)
| Item | Parity | No. | SID-Lys:ME ratio, g/Mcal | P-value | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2.1 | 2.4 | 2.7 | 3.0 | 3.3 | Mean13 | SEM | Treat | Linear | Quadratic | |||
| Initial sow body weight, kg | 1 | 31 | 200.2 | 204.0 | 199.1 | 201.8 | 207.8 | 202.3x | 4.27 | 0.71 | -- | -- |
| 2 | 32 | 228.9 | 220.8 | 221.2 | 236.1 | 227.0 | 226.6y | 6.58 | 0.50 | -- | -- | |
| 3+ | 87 | 289.4 | 284.6 | 286.0 | 278.5 | 279.1 | 283.5z | 5.57 | 0.60 | -- | -- | |
| Total | 150 | 256.5 | 253.6 | 255.7 | 252.1 | 255.0 | 254.6 | 7.34 | 0.99 | -- | -- | |
| Sow body weight at weaning, kg | 1 | 31 | 178.5 | 184.7 | 179.9 | 182.2 | 190.3 | 182.6x | 4.69 | 0.50 | 0.19 | 0.53 |
| 2 | 32 | 209.1 | 203.4 | 203.8 | 220.9 | 211.8 | 209.7y | 6.61 | 0.35 | 0.32 | 0.91 | |
| 3+ | 87 | 272.3 | 268.6 | 271.9 | 264.0 | 264.9 | 268.3z | 5.65 | 0.77 | 0.30 | 0.98 | |
| Total | 150 | 237.8 | 236.6 | 239.8 | 236.3 | 240.1 | 238.1 | 7.65 | 0.99 | 0.84 | 0.90 | |
| Sow body weight change, kg1 | 1 | 31 | -21.8 | -19.3 | -19.3 | -19.7 | -17.4 | -19.2x | 1.83 | 0.66 | 0.16 | 0.90 |
| 2 | 32 | -19.8 | -17.7 | -17.6 | -14.8 | -15.2 | -16.8y | 1.44 | 0.11 | 0.01 | 0.49 | |
| 3+ | 87 | -17.2b | -16.0ab | -14.2ab | -14.4a | -14.1a | -15.4y | 0.80 | 0.02 | < 0.01 | 0.14 | |
| Total2 | 150 | -18.5c | -16.8bc | -15.6ab | -15.5ab | -14.9a | -16.3 | 0.74 | < 0.01 | < 0.01 | 0.23 | |
1Initial sow body weight was used as a covariate in the analysis
2Parity effect was included in the model
3Parity effect and treatment effect was included in the model
a, b, cWithin a row, values with no common superscript differ significantly (P < 0.05)
x, y, zWithin a column, values with no common superscript differ significantly (P < 0.05)