Table 1.
The low and high illumination in light intensity and chicken perceived light intensity of 3 groups.
| Type of illumination | WL | BL | GL | SEM | Pvalue |
| Low illumination | |||||
| Light intensity (lux) | 109 | 24 | 206 | 8.67 | <0.001 |
| Chicken perceived light intensity (clux) | 163 | 216 | 210 | 14.97 | <0.001 |
| High illumination | |||||
| Light intensity (lux) | 1237 | 229 | 2028 | 66.20 | <0.001 |
| Chicken perceived light intensity (clux) | 1855 | 2061 | 2068 | 144.18 | 0.011 |
| Ratio | 1.5 | 9.0 | 1.02 |
Abbreviations: BL, monochromatic blue light (455 nm/447.5–462.5 nm); GL, monochromatic green light (525 nm/515–535 nm); WL, 4,000 K white light (380–780 nm).
Ratio: Chicken perceived light intensity (clux)/Light intensity (lux) in low illumination or high illumination.