Over 59 weeks, the average laying rate of laying hens was 251.76 eggs under incandescent bulbs and increased to 271.62 eggs under red LED bulbs, showing a 7.8% improvement.

Incandescent Bulb

White LED

Blue LED

Green LED

Yellow LED

Red LED

Poultry, including chickens and ducks, have three types of photoreceptors, perceiving a broader range of wavelengths than humans, with varying sensitivity to different wavelengths. The National Institute of Animal Science conducted experiments on how many eggs hens lay over 59 weeks under different light sources, such as incandescent bulbs, white LED bulbs, and red LED bulbs.

The results showed an increase from 251 eggs under incandescent bulbs to 271 eggs under red LED bulbs, indicating that suitable lighting varies for laying hens in egg-producing farms.

Over 5 weeks, the weight gain of broiler chickens was 2.48 kg under incandescent bulbs and increased to 2.55 kg under yellow LED bulbs, showing a 2.8% improvement.

Incandescent Bulb

White LED

Blue LED

Green LED

Yellow LED

Red LED

Researcher Kim Minji explained, "Poultry farms raising 30,000 birds can save 80% on electricity costs and increase income by 18 million won annually by switching to yellow LED bulbs."

Poultry, including chickens and ducks, have three types of photoreceptors, perceiving a broader range of wavelengths than humans, with varying sensitivity to different wavelengths.

The National Institute of Animal Science compared the weight gain of chickens under different light wavelengths. Chickens gained approximately 2.8% more weight under yellow LED bulbs over 5 weeks, increasing from 2.48 kg under incandescent bulbs to 2.55 kg.