Table 4.

Characteristics of the spectral power distribution developed for laying hens.

	Description
S1	The spectral power distribution was configured to include wavelengths ranging from 380 to 740 nm, with its composition featuring 3.2% UVA emission (380–400 nm), 12.6% in the blue band (400–485 nm), 5.1% in the cyan band (485–500 nm), 28.8% in the green band (500–565 nm), 12.8% in the yellow band (565–590 nm), 17.8% in the orange band (590–625 nm), and 19.7% in the red band (625–740 nm). This configuration yields a color temperature of 4082 K
S2	The spectral power distribution spans wavelengths from 380 to 740 nm. Its composition includes 4.5% emission in the UVA band (380–400 nm), 4.4% in the blue band (400–485 nm), 1.6% in the cyan band (485–500 nm), 14.7% in the green band (500–565 nm), 9.9% in the yellow band (565–590 nm), 21.3% in the orange band (590–625 nm), and a dominant 43.7% in the red band (625–740 nm). This combination produces a color temperature of 2193 K
C	The control spectral power distribution, with a color temperature of 3000 K, spans wavelengths from 400 nm to 740 nm. Its spectral composition includes 11.5% blue light (400–485 nm), 3.0% cyan (485–500 nm), 23.3% green (500–565 nm), 14.1% yellow (565–590 nm), 23.0% orange (590–625 nm), and 25.0% red (625–740 nm). This spectrum serves as the control treatment