Item | Parity | No. | SID-Lys:ME ratio, g/Mcal | Â | P-value | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
 |  |  | 2.1 | 2.4 | 2.7 | 3.0 | 3.3 | Mean13 | SEM | Treat | Linear | Quadratic |
Initial litter weight, kg | 1 | 31 | 13.57 | 13.68 | 14.26 | 13.41 | 13.37 | 13.65x | 0.53 | 0.81 | -- | -- |
 | 2 | 32 | 15.44 | 16.30 | 15.17 | 16.15 | 15.59 | 15.74y | 0.77 | 0.85 | -- | -- |
 | 3+ | 87 | 16.59 | 16.35 | 16.48 | 16.13 | 16.24 | 16.36y | 0.45 | 0.96 | -- | -- |
 | Total | 150 | 15.66 | 15.80 | 15.77 | 15.50 | 15.61 | 15.67 | 0.38 | 0.98 | -- | -- |
Litter weight at weaning, kg1 | 1 | 31 | 68.39d | 71.81c | 73.01bc | 75.28ab | 76.15ab | 74.40x | 2.17 | < 0.01 | < 0.01 | 0.84 |
 | 2 | 32 | 74.05d | 75.07cd | 77.30bc | 79.99a | 78.91ab | 76.66y | 1.63 | < 0.01 | < 0.01 | 0.96 |
 | 3+ | 87 | 77.56c | 80.31b | 81.86b | 85.02a | 84.92a | 81.53z | 1.31 | < 0.01 | < 0.01 | < 0.01 |
 | Total2 | 150 | 75.74d | 78.33c | 79.85b | 82.60a | 82.34a | 79.77 | 1.16 | < 0.01 | < 0.01 | 0.06 |
Litter weight gain, kg/d1 | 1 | 31 | 1.96c | 2.09b | 2.13ab | 2.21a | 2.23a | 2.11x | 0.05 | < 0.01 | < 0.01 | 0.13 |
 | 2 | 32 | 2.09c | 2.12bc | 2.20ab | 2.29a | 2.25a | 2.19y | 0.04 | < 0.01 | < 0.01 | 0.03 |
 | 3+ | 87 | 2.20c | 2.30b | 2.36b | 2.47a | 2.47a | 2.36z | 0.04 | < 0.01 | < 0.01 | 0.20 |
 | Total2 | 150 | 2.16d | 2.25c | 2.30b | 2.40a | 2.40a | 2.30 | 0.03 | < 0.01 | < 0.01 | 0.08 |