de Souza Granja Barros Juliana, Sartor Karina, Pedroso Taise Fonseca, Vasconcelos Hugo, Scopacasa Vicente Artur, Bottura José Roberto, Sena Rebeca Gonçalves, Salvador Marcos José, de Moura Daniella Jorge
Faculdade de Engenharia Agrícola, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, 13083-875, Brazil.
Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, 13083- 862, Brazil.
Sci Rep. 2024 Dec 4;14(1):30250. doi: 10.1038/s41598-024-81480-1.
Avian photopic curves show energy peaks at different wavelengths than humans, particularly in the ultraviolet, yellow, and red range. Therefore, an illumination system with a spectrum tailored for laying hens, encompassing the entire visible spectrum, can enhance performance and welfare. The primary contribution of this study was the development of two Spectral Power Distributions (SPDs) specifically designed for laying hens, with different spectral proportions (S1 and S2), and the evaluation of their effects on productive performance, egg quality, and hormonal levels, compared to conventional white lighting at 3000 K (C). The SPD with a higher emission of red light to increased egg production and egg mass. It also had a lower melatonin concentration, suggesting an inverse relationship with the egg production rate. Regarding egg quality, SPDs specifically designed for laying hens resulted in eggs with greater weight (S1), shell strength (S2), and yolk height (S1 and S2) and diameter (S2). The study's results indicate that lighting emitting wavelengths within the spectrum visible to poultry, with higher emissions at long wavelengths, appears to be more favorable for laying hens than conventional lighting. A spectrum with higher emissions at shorter wavelengths appears to impair the productive performance of laying hens.
禽类明视觉曲线显示，其能量峰值出现在与人类不同的波长处，尤其是在紫外线、黄色和红色范围内。因此，一种为产蛋母鸡量身定制光谱、涵盖整个可见光谱的照明系统，可以提高生产性能和福利水平。本研究的主要贡献在于开发了两种专门为产蛋母鸡设计的光谱功率分布（SPD），它们具有不同的光谱比例（S1和S2），并将其与3000K的传统白色照明（C）相比，评估其对生产性能、蛋品质和激素水平的影响。红光发射量较高的SPD可提高产蛋量和蛋重。它的褪黑素浓度也较低，这表明其与产蛋率呈反比关系。关于蛋品质，专门为产蛋母鸡设计的SPD所产鸡蛋的重量更大（S1）、蛋壳强度更高（S2）、蛋黄高度更高（S1和S2）、蛋黄直径更大（S2）。研究结果表明，发出家禽可见光谱内波长、长波长发射量更高的光照，对产蛋母鸡似乎比传统照明更有利。短波长发射量更高的光谱似乎会损害产蛋母鸡的生产性能。
