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Original: Deepseek (The answer was generated by AI and is for reference only. Please refer to actual breeding conditions for accuracy.)
Similar to blue light, green light (with a wavelength range of approximately 510-560 nm) also has unique effects on the physiology and behavior of chickens, but its mode of action and effects are significantly different from those of blue light.
Overall, the role of green light in the poultry industry can be summarized as "growth promotion and behavior stabilization", and its effect is particularly pronounced during the early growth stage.
The following are the main effects of green light on chicken farming, which can be divided into several key aspects.
1.The Impact On Growth And Weight Gain
Promoting Early Growth: Numerous studies have shown that using green light during the brooding period can effectively promote the early growth and development of broilers and young laying hens. This promoting effect may even be more significant than that of blue light.
Possible Mechanism：
Neuroendocrine regulation: Green light is believed to be able to influence the secretion of growth hormone (such as GH) and insulin-like growth factor-1 (IGF-1) in chickens through the retina and hypothalamus, thereby directly accelerating cell growth and metabolism.
Appetite stimulation: Similar to blue light, green light can also stimulate appetite to some extent, increasing feed intake.
Application: During the 1-3 weeks of age for broilers or the brooding stage for laying hens, using green light can establish a good weight foundation for the chickens and improve the uniformity of the flock.
2.Improvement In Behavior And Welfare (Calming Effect)
This is a very prominent and widely recognized function of the green light.
Significant Calming Effect: Among all colors of light, green is generally regarded as having the best calming effect on chicken flocks. It can significantly reduce the tension, fear and stress responses of the chickens.
Reducing Bad Habits: Due to the quieter environment of the chicken flock, behaviors such as fighting, pecking at feathers, and pecking at the anus will significantly decrease. This is particularly important in farming models without beak trimming or those with strict animal welfare requirements.
Relieving Stress: In the face of inevitable stressors (such as noise, immunity, and culling), using green light illumination in advance or simultaneously can help the chicken flock smoothly pass through the stress period and reduce the decline in production performance.
3.The Impact On Sexual Maturity And Reproductive Performance
Promoting Effect (controversial or specific): Unlike the "delayed maturation" effect of blue light, some studies have found that green light has a slight promoting effect on the gonadal development of chickens, or at least does not have as strong an inhibitory effect as blue light. However, this effect may not be as clear and strong as that of red light.
Flexibility Is Required: Therefore, during the laying hen rearing period, if the flock's weight meets the standard but the sexual maturity is delayed, green light or white light can be appropriately introduced as a transition, rather than always using the blue light which has the strongest delaying effect.
4.The Potential Impact On Muscle Mass And Disease Resistance
Improving Muscle Quality: Research has shown that broilers raised in a green light environment have more optimal muscle fiber diameters and densities in their breast muscles, which might indicate better meat quality.
Enhancing Immunity: Some studies suggest that green light may slightly enhance the immune function of chickens by regulating the neuroendocrine system, such as increasing the proportion of lymphocytes, thereby strengthening their resistance to diseases. However, this area of research is still ongoing and has not yet become a widespread production practice.
Breeding Stage | Recommended Light Color | Main Objective |
The brooding period of broiler / Layer | Green light | Maximize the promotion of early weight gain and bone development to lay a solid foundation. |
Any stage of the stress period | Green light | After transportation, after immunization, and after group transfer, it can be used. It effectively calms the chicken flock and reduces stress-induced damage. |
A flock of chickens with pecking disorders | Green light | As an emergency management measure, quickly reduce bad habits such as pecking at feathers and anus. |
The later stage of layer growing period | Use with caution / Used as a transition | If you want a slightly more stimulating and mature environment, you can transition from blue light to green light or white light, and then adjust the light cycle to that of the egg-laying period. |
Notes for Attention
Lighting management is a comprehensive plan: Light color is only one part of lighting management; the intensity, duration, and program (constant or gradual) of the lighting are equally crucial.
LED lighting is the preferred choice: In modern farming, LED lights with the ability to precisely control wavelengths are used to provide different light colors, which is energy-efficient and highly effective.
Adhering to scientific procedures: The best approach is to follow established and proven lighting management plans, or to implement them after successful small-scale trials before scaling up.
Conclusion:
Green light is a powerful management tool, particularly adept at "stimulating growth" during the early stages of a chicken's life and "maintaining stability" throughout its growth period. By combining green light with other light colors such as blue and red at different stages, farmers can more precisely control the growth and behavior of chickens, ultimately achieving the goals of healthy, efficient, and welfare-oriented farming.