Items | Treatment, g AA/kg diet | SEMb | P-value | |||||
---|---|---|---|---|---|---|---|---|
0 | 0.25 | 0.5 | 1 | Main effect | Linear | Quadratic | ||
Performance | ||||||||
 Laying rate, % | 86.0 | 86.5 | 86.0 | 81.9 | 0.80 | 0.144 | 0.075 | 0.138 |
 Egg weight, g | 65.4 | 64.4 | 64.6 | 65.0 | 0.28 | 0.597 | 0.674 | 0.222 |
 ADFIa, g | 117 | 118 | 117 | 119 | 0.6 | 0.672 | 0.492 | 0.611 |
 FCR | 2.13 | 2.13 | 2.12 | 2.20 | 0.023 | 0.170 | 0.097 | 0.126 |
Egg quality | ||||||||
 Eggshell thickness, mm | 0.34 | 0.34 | 0.34 | 0.34 | 0.002 | 0.107 | 0.106 | 0.798 |
 Eggshell strength, kg/cm3 | 3.10 | 3.14 | 3.03 | 3.01 | 0.031 | 0.773 | 0.382 | 0.734 |
 Albumen height, mm | 6.39 | 6.32 | 6.92 | 6.39 | 0.079 | 0.738 | 0.761 | 0.598 |
 Haugh unit | 76.7 | 77.0 | 76.6 | 76.4 | 0.60 | 0.988 | 0.807 | 0.825 |
 Yolk colour | 6.82 | 6.80 | 6.83 | 6.85 | 0.029 | 0.959 | 0.653 | 0.807 |
 Eggshell portion, % | 9.88 | 9.91 | 9.81 | 9.73 | 0.059 | 0.748 | 0.322 | 0.650 |