Poultry and coloured light

Pd, Lewis; Morris, Trevor

doi:10.1079/wps20000015

Cited by 167 publications

(118 citation statements)

References 53 publications

Supporting

Mentioning

112

Contrasting

Unclassified

Order By: Relevance

“…Moreover, while the effect of distance in red light was different from dark and green, it was not different from that in white light. Birds may perceive red light as being less intense than other colours [21], such that the effect diminishes quicker with distance. Across treatment groups, high corticosterone levels were correlated with lower fledgling numbers, which could be due to effects of narrow-wavelength light on chick development [20].…”

Section: Discussionmentioning

confidence: 99%

Stressful colours: corticosterone concentrations in a free-living songbird vary with the spectral composition of experimental illumination

et al. 2015

View full text Add to dashboard Cite

Organisms have evolved under natural daily light/dark cycles for millions of years. These cycles have been disturbed as night-time darkness is increasingly replaced by artificial illumination. Investigating the physiological consequences of free-living organisms in artificially lit environments is crucial to determine whether nocturnal lighting disrupts circadian rhythms, changes behaviour, reduces fitness and ultimately affects population numbers. We make use of a unique, large-scale network of replicated field sites which were experimentally illuminated at night using lampposts emanating either red, green, white or no light to test effect on stress hormone concentrations (corticosterone) in a songbird, the great tit (Parus major). Adults nesting in white-light transects had higher corticosterone concentrations than in the other treatments. We also found a significant interaction between distance to the closest lamppost and treatment type: individuals in red light had higher corticosterone levels when they nested closer to the lamppost than individuals nesting farther away, a decline not observed in the green or dark treatment. Individuals with high corticosterone levels had fewer fledglings, irrespective of treatment. These results show that artificial light can induce changes in individual hormonal phenotype. As these effects vary considerably with light spectrum, it opens the possibility to mitigate these effects by selecting street lighting of specific spectra.

show abstract

Section: Discussionmentioning

confidence: 99%

Stressful colours: corticosterone concentrations in a free-living songbird vary with the spectral composition of experimental illumination

et al. 2015

View full text Add to dashboard Cite

show abstract

“…However, these responses depend on the photoreception of the retina, because the reproductive responses are influenced by the perception of light by the hypothalamus. In the present study, egg production was apparently not affected by light wavelength (Lewis & Morris, 2000).…”

Section: Resultsmentioning

confidence: 50%

“…According to Lewis & Morris (2000), the infiltration of the red wavelength radiation in the hypothalamus promotes stronger stimulation of the production of sexual hormones relative to green and blue wavelengths. This may explain the longer oviducts of the Japanese quails exposed to the red LED source and the fluorescent lamp, compared with the green LED source in the present study.…”

Section: Effect Of Led Lighting Colors For Laying Japanese Quailsmentioning

confidence: 99%

Effect of Led Lighting Colors for Laying Japanese Quails

Nunes

Garcia

Nääs

et al. 2016

Rev. Bras. Cienc. Avic.

View full text Add to dashboard Cite

Time of exposure and light intensity rearing house may affect the performance and egg quality of laying quails. This research aimed at evaluating the live performance, egg quality, biometry of the reproductive system, and the gastrointestinal tract of Japanese quails (Coturnix coturnix japonica) exposed to artificial light-emitting diodes (LED) of different colors in comparison with fluorescent lamps. A total of 240 Japanese quails were distributed in completely randomized experimental design with four treatments (fluorescent lamp, and green, red, or blue LED lamps) with six replicates of 10 birds each. Average egg weight and eggshell thickness were different (p<0.05) when LED bulbs were compared with fluorescent lamps. The egg weight of the birds exposed to the red LED was similar to those under a fluorescent lamp (p>0.05). The oviduct of 64-d-old hens exposed to green LED lighting was shorter (p<0.05) than those exposed to the fluorescent lamp. Red LED can be used to replace the fluorescent lamps, as they promote the same live performance, egg quality, and morphological development of the reproductive tract of laying Japanese quails.

show abstract

“…Nuboer et al, 1992;Lewis and Morris, 2000;Prescott et al, 2003) that photometric calculations using standard human spectral sensitivity data may not be satisfactory for applications with other animals. One alternative would be to use bespoke spectral sensitivity functions for each species or group of species.…”

Section: Introductionmentioning

confidence: 99%

Calculating luminous flux and lighting levels for domesticated mammals and birds

Saunders

Jarvis

Wathes

2008

Animal

View full text Add to dashboard Cite

This paper considers whether photometric calculations using standard human spectral sensitivity data are satisfactory for applications with other species or whether it would be worthwhile to use bespoke spectral sensitivity functions for each species or group of species. Applications include the lighting of interior areas and the design of photometers. Published spectral sensitivity data for a number of domesticated animals (human, turkey, duck, chicken, cat, rat and mouse) were used to calculate lighting levels for each species and compared with those derived from standard CIE human photopic and scotopic functions. Calculations were made for spectral power distributions of daylight, incandescent light and 12 fluorescent sources commonly used to light interiors. The calculated lighting levels showed clear differences between species and the standard human. Assuming that the resulting effects on retinal illuminance determine the overall perception of the level of light, there may be applications where these differences are important. However, evidence is also presented that the magnitude of these inter-species effects are similar to, or smaller than, those arising from other optical, physiological and psychological factors, which are also likely to influence the resulting perception. It is also important to recognise that lighting-related parameters such as the good colour rendering of surfaces, the avoidance of glare from lamps and other factors that may be species related are sometimes of greater importance than the lighting levels. Our results suggest that a judicial choice of three spectral sensitivity functions would satisfy most circumstances. Firstly, where the overall sensitivity is maximal in the medium to long wavelengths, the standard CIE photopic function will suffice, chicken, turkey and duck fall in this category. Secondly, in a small number of cases where the sensitivity centres on the short to medium wavelengths, the CIE scotopic function should be used, e.g. for the scotopic cat, photopic rat and photopic mouse. Finally, where an animal is also sensitive to the UV region of the spectrum and there is a significant component of UV radiation, then an additional measure of the UV response should be included, as for the photopic rat and photopic mouse.

show abstract

Poultry and coloured light

Cited by 167 publications

References 53 publications

Stressful colours: corticosterone concentrations in a free-living songbird vary with the spectral composition of experimental illumination

Stressful colours: corticosterone concentrations in a free-living songbird vary with the spectral composition of experimental illumination

Effect of Led Lighting Colors for Laying Japanese Quails

Calculating luminous flux and lighting levels for domesticated mammals and birds

Contact Info

Product

Resources

About