What is the impact of lighting spectrum (LED wavelengths) on brown egg weight and lay rate?

Avian eyes are highly sensitive to light, possessing four types of cones that detect different wavelengths. Red light waves penetrate the hen's skull and brain tissue, stimulating the photoreceptors of the hypothalamus to produce GnRH, which triggers follicle-stimulating hormone (FSH) and luteinizing hormone (LH) release. This hormonal cascade is crucial to kickstart and maintain high egg-laying persistency in brown layers. Conversely, green and blue wavelengths do not penetrate well but are absorbed by retinal photoreceptors, promoting muscle growth, reducing hyperactive behaviors, and preventing feather pecking. High-performance houses utilize adjustable LED systems to toggle spectrums. Farmers can read detailed light management guides in the Poultry Encyclopedia, buy certified poultry-specific LED fixtures on Poultry Plaza, monitor daily feed and egg rates on Poultry Rates, and list peak-production lots on Murghi Mandi.