This study evaluated the productivity and egg quality of Japanese quails reared under different LED colors and rearing systems. A total of 720 female quails were assigned to a 3 × 2 factorial arrangement with three LED colors (red, green, and white) and two rearing systems (cage and floor) until 20 weeks of age. Production performance was evaluated across specific age intervals, while physical egg quality traits were analyzed using a Repeated-measures General Linear Model to assess temporal changes. No significant overall interactions between LED color and rearing system were observed (p > 0.05). However, significant interactions between treatment and time (p 0.05) but were significantly influenced by time (p < 0.05). In conclusion, red LED light optimizes long-term profitability, whereas the floor system offers distinct advantages during the onset of lay.
Kaewhom et al. (2026) studied this question.