Impact of light spectrum electromagnetic radiation variations on performance and hormonal profiles in laying hens
Juliana de Souza Granja Barros, Karina Sartor, Taise Fonseca Pedroso, Hugo Vasconcelos, Vicente Artur Scopacasa, José Roberto Bottura, Rebeca Gonçalves Sena, Marcos José Salvador, Daniella Jorge de Moura · 2024
Read Impact of light spectrum electromagnetic radiation variations on performance and hormonal profiles in laying hens by Juliana de Souza Granja Barros, Karina Sartor, Taise Fonseca Pedroso, Hugo Vasconcelos, Vicente Artur Scopacasa, José Roberto Bottura, Rebeca Gonçalves Sena, Marcos José Salvador, Daniella Jorge de Moura (2024) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-11618619.txt.
Description
Juliana de Souza Granja Barros and co-authors test tailor-made light spectra on laying hens, in a 2024 study. Birds see light differently from humans. Their sensitivity peaks in other parts of the spectrum, including ultraviolet and red. The team designed two spectra for hens. One leaned red, the other spread differently. Both were compared with standard warm white light. Output, egg quality, and hormone levels were tracked.
The red-leaning spectrum raised egg production and egg mass. It also lowered a sleep-related hormone. That pattern hints the hormone tracks laying rate inversely. Hen-tuned spectra gave heavier eggs in one design. Shell strength improved under the other. Yolk measures improved under both. Spectra heavy in short wavelengths hurt performance. The authors favor full-spectrum light rich in long wavelengths. Barn lighting, they suggest, should be built for bird eyes, not human ones. Welfare and output may rise together.
Catalog record
| CREATOR | Juliana de Souza Granja Barros, Karina Sartor, Taise Fonseca Pedroso, Hugo Vasconcelos, Vicente Artur Scopacasa, José Roberto Bottura, Rebeca Gonçalves Sena, Marcos José Salvador, Daniella Jorge de Moura |
|---|---|
| YEAR | 2024 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 42 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |