Parameter | Diet2 | p | ||||
L1 (80%) | L2 (87.5%) | L3 (95%) | L4 (102.5%) | L5 (110%) | ||
PD (g/d) | 4.42c ± 0.22 | 6.84b ± 0.17 | 8.43a ± 0.12 | 8.90a ± 0.10 | 8.69a ± 0.39 | 0.000 |
Protein quality (b)3 | 158b ± 4.6 | 182a ± 0.9 | 186a ± 2.9 | 193a ± 2.6 | 188a ± 2.3 | 0.004 |
Lys efficiency (bc−1)4 | 34.2a ± 1.0 | 35.6a ± 0.2 | 33.9a ± 0.5 | 32.5ab ± 0.4 | 29.5b ± 0.4 | 0.009 |