Effect of cold and warm white light on selected endocrine and immune parameters of broiler embryos and hatchlings

Drozdova, Angelika; Kankova, Zuzana; Zeman, Michal

doi:10.17221/230/2020-cjas

Cited by 4 publications

(4 citation statements)

References 30 publications

(47 reference statements)

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“…Incubation under blue light resulted in the lowest melatonin biosynthesis. In another study (Drozdova et al 2020), we showed that incubation in warm and cold white light did not significantly influence embryonic melatonin biosynthesis, and therefore, it is possible that distinct wavelengths may selectively influence postembryonic development and behaviour.…”

mentioning

confidence: 82%

“…In plasma, we measured glucose, cholesterol and triacylglycerol concentrations using commercially available kits according to the manufacturer's instructions (Erba Lachema s.r.o., Brno, Czech Republic). Plasma levels of the thyroid hormones triiodothyronine (T 3 ) and thyroxine (T 4 ) (Institute of Isotopes Co., Ltd., Budapest, Hungary), as well as the stress hormone corticosterone (DRG Instruments GmbH, Marburg, Germany) were determined by commercial radioimmunoassay kits according to the manufacturer's instructions (Drozdova et al 2020). Hormones were https://doi.org/10.17221/80/2021-CJAS light treatment and age, using the Holm-Sidak post hoc test.…”

Section: Methodsmentioning

confidence: 99%

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Prenatal effects of red and blue light on physiological and behavioural parameters of broiler chickens

Drozdova¹,

Kankova²,

Bilčı́k³

et al. 2021

CZECH J ANIM SCI

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Light during incubation can influence embryonic and postembryonic development of chickens, but the underlying mechanisms are poorly understood. Previous studies have demonstrated that red and blue lights during incubation had opposite effects on the development of embryonic melatonin biosynthesis; red light results in the highest and blue light in the lowest amplitude of the daily rhythm. Therefore, in this study, we investigated if exposure to monochromatic red (632 nm) and blue (463 nm) light during incubation can differently influence growth, selected biochemical (glucose, cholesterol, triacylglycerols) and endocrine (corticosterone and thyroid hormones) traits and behavioural parameters during postembryonic development in broiler chickens. For analysis, we used 10 and 11 hatchlings incubated in red and blue light, respectively and 10 birds per each group (six males and four females) in 3-weeks-old broilers. During the rapid growth phase (days 18, 20 and 21 of age), higher body weight was recorded in broilers incubated under red compared to blue light, whereas endocrine and metabolic traits did not differ between the treatments. The improved growth rate was related to behavioural traits, mainly because chickens incubated in red light exhibited more passive (resting, standing, preening, dust bathing) and less active behaviours (walking, foraging, fighting, wing-flapping) than the blue-light incubated birds. The time spent for eating and drinking and the results of the tonic immobility test did not differ between both groups. Our results suggest that red and blue monochromatic light during incubation can differently program the postembryonic development of broilers, with possible consequences for their growth and welfare.

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mentioning

confidence: 82%

Section: Methodsmentioning

confidence: 99%

Prenatal effects of red and blue light on physiological and behavioural parameters of broiler chickens

Drozdova¹,

Kankova²,

Bilčı́k³

et al. 2021

CZECH J ANIM SCI

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“…The cool white LED (5,000 K) containing more blue wavelength could improve weight gain and reduce stress and fear responses of broilers as compared to warm white LED (2,700 K) (Archer, 2018). However, it was shown that incubation in warm and cold white light did not significantly influence embryonic melatonin biosynthesis in the pineal, T 3 , T 4 , corticosterone hormone levels in the blood and immune system-related genes, presenilin-1, and avian betadefensin1, in the duodenum and bursa Fabricius (Drozdova et al, 2020). The authors concluded that selective effects of distinct wavelengths on embryonic and post-embryonic development might be more profound than the effects of change in the color temperature of polychromatic light.…”

Section: Effects Of Light On Embryo Development and Post-hatching Growthmentioning

confidence: 96%

“…A stronger humoral immune response to keyhole limpet hemocyanin (KLH), which is a non-pathogenic protein antigen and often used to assess humoral immunity, was reported in broilers compared to dark incubation when eggs were exposed to a 12L:12D white fluorescent light (Archer and Mench, 2013). Drozdova et al (2020) further investigated if the color temperature of white light affects the immune system and did not find any significant effect on the expression of genes involved in innate immune responses in the duodenum and bursa of Fabricius. However, distinct effects of different wavelengths have been reported.…”

Section: Effects Of Light On Embryo Development and Post-hatching Growthmentioning

confidence: 99%

Incubation Temperature and Lighting: Effect on Embryonic Development, Post-Hatch Growth, and Adaptive Response

2022

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During incubation, the content of the egg is converted into a chick. This process is controlled by incubation conditions, which must meet the requirements of the chick embryo to obtain the best chick quality and maximum hatchability. Incubation temperature and light are the two main factors influencing embryo development and post-hatch performance. Because chicken embryos are poikilothermic, embryo metabolic development relies on the incubation temperature, which influences the use of egg nutrients and embryo development. Incubation temperature ranging between 37 and 38°C (typically 37.5–37.8°C) optimizes hatchability. However, the temperature inside the egg called “embryo temperature” is not equal to the incubator air temperature. Moreover, embryo temperature is not constant, depending on the balance between embryonic heat production and heat transfer between the eggshell and its environment. Recently, many studies have been conducted on eggshell and/or incubation temperature to meet the needs of the embryo and to understand the embryonic requirements. Numerous studies have also demonstrated that cyclic increases in incubation temperature during the critical period of incubation could induce adaptive responses and increase the thermotolerance of chickens without affecting hatchability. Although the commercial incubation procedure does not have a constant lighting component, light during incubation can modify embryo development, physiology, and post-hatch behavior indicated by lowering stress responses and fearful behavior and improving spatial abilities and cognitive functions of chicken. Light-induced changes may be attributed to hemispheric lateralization and the entrainment of circadian rhythms in the embryo before the hatching. There is also evidence that light affects embryonic melatonin rhythms associated with body temperature regulation. The authors’ preliminary findings suggest that combining light and cyclic higher eggshell temperatures during incubation increases pineal aralkylamine N-acetyltransferase, which is a rate-limiting enzyme for melatonin hormone production. Therefore, combining light and thermal manipulation during the incubation could be a new approach to improve the resistance of broilers to heat stress. This review aims to provide an overview of studies investigating temperature and light manipulations to improve embryonic development, post-hatch growth, and adaptive stress response in chickens.

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Effect of blue and red monochromatic light during incubation on the early post-embryonic development of immune responses in broiler chicken

Kankova

Drozdova

Hodova

et al. 2022

British Poultry Science

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Effect of cold and warm white light on selected endocrine and immune parameters of broiler embryos and hatchlings

Cited by 4 publications

References 30 publications

Prenatal effects of red and blue light on physiological and behavioural parameters of broiler chickens

Prenatal effects of red and blue light on physiological and behavioural parameters of broiler chickens

Incubation Temperature and Lighting: Effect on Embryonic Development, Post-Hatch Growth, and Adaptive Response

Effect of blue and red monochromatic light during incubation on the early post-embryonic development of immune responses in broiler chicken

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