Light wavelengths/colors: Future prospects for broiler behavior and production

Soliman, F. S. G.; El-Sabrout, Karim

doi:10.1016/j.jveb.2019.10.014

Cited by 41 publications

(43 citation statements)

References 61 publications

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“…Light plays an important role in the growth and development of living organisms [23][24][25]. In many animals, light is a basic necessity for embryonic development and is one of the environmental factors that influence embryo growth rate, hatchability, and hatching time, whereas dark conditions may result in hatching failure or distortion of the embryo [6,26,27].…”

Section: Discussionmentioning

confidence: 99%

Effect of exposure to different light colors on embryonic development and neurophysiological traits in the chick embryo

et al. 2021

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Background and Aim: Many environmental factors exist that influence embryonic development which is missing in the poultry industry, such as light in incubation facilities or hatcheries. Light plays an important role in the growth and development of chick embryos, whereas dark environments can lead to hatching failure or embryo distortion. Therefore, this study aimed to demonstrate the importance of light and its various colors on the growth and development of broiler chick embryos. Materials and Methods: Four treatments were used to study the impact of various light colors on the growth of embryos and their neurophysiological traits: Dark without light (D), red light (RL), blue light (BL), and green light (GL), with three replicates per treatment (25 eggs/replicate) for a total of 300 fertile Ross 308 eggs. Each treatment was assigned to one incubator (75 eggs/incubator), whereas all other conditions were kept the same. Results: The results showed a significant increase (p<0.01) in embryonic development for embryo weight, chick body weight, hatchability, and embryo index for RL, BL, and especially GL. RL, BL, and especially GL significantly increased (p<0.01) neurophysiological traits of the neurons, brain weight, and brain index. Conclusion: The use of light during the embryonic period affects the development of the embryo and its neurophysiological traits.

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Section: Discussionmentioning

confidence: 99%

Effect of exposure to different light colors on embryonic development and neurophysiological traits in the chick embryo

et al. 2021

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“…Studies report that shorter wavelengths (blue 450 nm, green 550 nm) have positive effects on broiler performance, while longer wavelengths (red 700 nm) increase the activity of broilers. The impact of light wavelength on welfare, behavior and performance of poultry was recently reviewed [ 107 , 108 ]. Due to the chickens’ good color vision, they may experience a better quality of vision in bright than in dim light.…”

Section: Impact Of Light Regime On the Immune System In Chickensmentioning

confidence: 99%

Impact of Housing Environment on the Immune System in Chickens: A Review

Hofmann

Schmucker

Bessei

et al. 2020

Animals

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During their lifespan, chickens are confronted with a wide range of acute and chronic stressors in their housing environment that may threaten their welfare and health by modulating the immune system. Especially chronic stressful conditions can exceed the individual’s allostatic load, with negative consequences for immunity. A fully functional immune system is mandatory for health and welfare and, consequently, also for high productivity and safe animal products. This review provides a comprehensive overview of the impact of housing form, light regime as well as aerial ammonia and hydrogen sulfide concentrations on the immune system in chickens. Certain housing conditions are clearly associated with immunological alterations which potentially impair the success of vaccinations or affect disease susceptibility. Such poor conditions counteract sustainable poultry production. This review also outlines current knowledge gaps and provides recommendations for future research.

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“…Well-being is defined as the animal's ability to interact and live well in its environment [2]. Light is an essential factor in the microclimate of the poultry house, which means variations in its distribution, intensity, wavelength, and duration affect the welfare and performance of birds [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…The lighting period can contribute to normal and healthy behavior patterns [4,8]. Broilers are more active when in contact with high illuminance (180-200 lux) [9].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Cluster and Unrest Behaviors of Laying Hens Housed under Different Thermal Conditions and Light Wave Length

Fernandes

Sartori

Morais

et al. 2021

Animals

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Laying hens are affected by the intensity, wavelength, and duration of light, and the behavioral patterns of these animals are important indicators of stress. The objective of the present study was to evaluate cluster and unrest behaviors of lying hens submitted to three environments with different treatments of monochromatic lighting (blue, green, and red). For 29 weeks, 60 laying hens from the Lohmann variety were divided into three groups and monitored by surveillance cameras installed on each shed ceiling and directed to the floor. Each group was housed in a small-scale shed and maintained under a monochromatic lighting treatment. The recordings were made at two times of the day, 15 min in the morning and 15 min in the afternoon, and the videos were processed, segmented, and analyzed computationally. From the analysis of the images, the cluster and unrest indexes were calculated. The results showed the influence of lighting on these behaviors, displaying that the birds were more agitated in the treatments with shorter wavelengths. Cluster behavior was higher in birds housed under red light. There was an interaction between the lighting treatments and the thermal environment, indicating that more studies should be carried out in this area to better understand these behavioral changes.

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Light wavelengths/colors: Future prospects for broiler behavior and production

Cited by 41 publications

References 61 publications

Effect of exposure to different light colors on embryonic development and neurophysiological traits in the chick embryo

Effect of exposure to different light colors on embryonic development and neurophysiological traits in the chick embryo

Impact of Housing Environment on the Immune System in Chickens: A Review

Analysis of Cluster and Unrest Behaviors of Laying Hens Housed under Different Thermal Conditions and Light Wave Length

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