Multi-Spectrum Poultry Lighting for Growth-Stage Light Control
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Solution Overview
Problem
Existing poultry rearing systems fail to provide optimal light conditions that adapt to the changing needs of broiler chickens throughout their growth cycle, leading to suboptimal growth rates, feed conversion ratios, and increased stress and aggression.
Innovation Solution
A light generating system that controls the spectral power distribution and intensity of blue, green, and amber-red light independently, transitioning between different light spectra during distinct periods to meet the specific biological needs of broiler chickens at different stages of their growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-wavelength spectrum lighting system is used throughout the rearing period, then the device complexity is reduced, but the adaptability to different growth stages of poultry is insufficient
Solution Approach 1:
The lighting system is segmented into multiple independent light sources emitting at different wavelengths (blue LED at 470nm, cyan LED at 495nm, green LED at 530nm, yellow LED at 560nm, red LED at 630nm). Each wavelength can be independently controlled to match the specific needs of different growth stages, resolving the contradiction between adaptability and device complexity.
Solution Approach 2:
The lighting system transitions from static fixed-wavelength lighting to dynamic multi-wavelength lighting with independent control. The spectral power distribution can be dynamically adjusted according to growth stage, allowing the system to adapt to changing poultry needs while maintaining manageable complexity through modular design.
2Productivity
If red light is used to promote feeding and drinking activity, then productivity is improved, but stress and aggression increase
Solution Approach 1:
Different wavelengths are applied with different intensities at different growth stages. Red light (630nm) is used prominently during the brood stage to stimulate feeding and drinking activity. During the grow-out stage, red light intensity is reduced while blue (470nm) and cyan (495nm) wavelengths are increased to promote muscle growth and reduce aggression, allowing localized optimization for each physiological need.
Solution Approach 2:
The spectral power distribution parameters are changed according to growth stage. During brood stage, red light intensity is high to promote activity. During grow-out stage, the parameters shift to emphasize blue and cyan wavelengths for muscle growth while reducing red light to minimize stress and aggression, thus improving productivity without harmful effects.
3Weight of moving object
If blue light is used to promote muscle growth and weight gain, then weight gain is improved, but locomotion and activity are reduced
Solution Approach 1:
The lighting system applies blue light (470nm) and cyan light (495nm) periodically or in specific phases during the grow-out stage to promote muscle growth and weight gain. During brood stage, these wavelengths are used more moderately to maintain adequate locomotion and activity. This periodic application resolves the contradiction by timing the high blue light intensity to periods when weight gain is prioritized while maintaining activity during periods when exploration and movement are important.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances weight gain, improves feed conversion ratios, reduces stress and aggression, and supports better immune function by providing tailored light conditions that promote muscle growth and activity during various stages of poultry rearing.
Implementation Method 1
The lighting system includes a plurality of light emitting diodes comprising: a blue LED configured to generate blue light having a wavelength of 470 nm; a cyan LED configured to generate cyan light having a wavelength of 495 nm; a green LED configured to generate green light having a wavelength of 530 nm; a yellow LED configured to generate yellow light having a wavelength of 560 nm; and a red LED configured to generate red light having a wavelength of 630 nm
Data Source
AI summary
The invention provides a light generating system (1000), wherein the light generating system (1000) is configured to generate system light (1001) having a controllable spectral power distribution and intensity, wherein in an operational mode the light generating system (1000) is configured to generate during a first time period P1, a first spectral power distribution E1, and during a second time period P2, later in time than the first period P1, a second spectral power distribution E2, wherein: (A) the controllable spectral power distribution comprises (a) a first spectral range Λ1 having one or more wavelengths in the blue, and having a primary first spectral power SP(P1, Λ1) during the first time period P1 and a secondary first spectral power SP(P2, Λ1) during the second time period P2, (b) a second spectral range Λ2 having one or more wavelengths in the green, and having a primary second spectral power SP(P1, Λ2) during the first time period P1 and a secondary second spectral power SP(P2, Λ2) during the second time period P2, and (c) an amber-red spectral range Λ34 having one or more wavelengths in the amber-red, and having a primary amber-red spectral power SP(P1, Λ34) during the first time period P1 and a secondary amber-red spectral power SP(P2, Λ34) during the second time period P2; (B) the first spectral power distribution E1 comprises the primary first spectral power SP(P1, Λ1), the primary second spectral power SP(P1, Λ2), and the primary amber-red spectral power SP(P1, Λ34); the second spectral power distribution E2 comprises the secondary first spectral power SP(P2, Λ1), the secondary second spectral power SP(P2, Λ2), and the secondary amber-red spectral power SP(P2, Λ34); (C) the first period P1 is selected from of at least part of a day; the second period P2 is selected from the range of at least part of a day; (D) SP(P1, Λ1)>0 Watt, SP(P1, Λ2)>0 Watt, and SP(P1, Λ34)>0 Watt; SP(P2, Λ1>0 Watt, and SP(P2, Λ2)>0 Watt; SP(P2, Λ2)/SP(P2, Λ1)<SP(P1, Λ2)/SP(P1, Λ1); SP(P2, Λ34)/SP(P2, Λ1)<SP(P1, Λ34)/SP(P1, Λ1); and SP(P2, Λ34)/SP(P2, Λ2)<SP(P1, Λ34)/SP(P1, Λ2).