Light colour and intensity alters reproductive/seasonal responses in Japanese quail

Yadav, Suneeta; Chaturvedi, Chandra Mohini

doi:10.1016/j.physbeh.2015.04.036

Cited by 15 publications

(8 citation statements)

References 44 publications

(54 reference statements)

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“…Previous studies have found that color light information influences the various physiological effects in avian species. For example, the different wavelengths of light affect the growth and development of quails , turkey and broilers ; the cellular and humoral immune responses of turkey hens and broilers ; the mucosal immunological barriers of the small intestine of posthatching chickens and chick embryos ; reproduction of Japanese quails and geese ; the muscular growth of broilers ; and the productive performance of laying hens and broilers . These results demonstrated that the changes in organism physiological functions were induced by environmental light.…”

Section: Introductionmentioning

confidence: 86%

Melatonin Mediates Monochromatic Light‐induced Insulin‐like Growth Factor 1 Secretion of Chick Liver: Involvement of Membrane Receptors

Cao

Wang

et al. 2016

Photochem & Photobiology

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Monochromatic lights influenced the proliferation and differentiation of skeletal satellite cells in broilers by the enhancement of insulin-like growth factor 1 (IGF-1) secretion. However, whether melatonin (MEL)-mediated monochromatic lights influenced the IGF-1 secretion remains unclear. Newly hatched broilers, including intact, sham operation and pinealectomy groups, were exposed to blue (BL), green (GL), red (RL) and white light (WL) from a light-emitting diode system for 14 days. The results showed that GL effectively promoted the secretion of MEL and IGF-1, the expression of proliferating cell nuclear antigen and MEL receptor subtypes Mel1a, Mel1b and Mel1c in the liver compared to BL and RL in vivo. Moreover, those was a positive correlation between MEL and IGF-1 (r = 0.834). After pinealectomy, however, these parameters declined, and there were no differences between GL and other monochromatic light treatments. In vitro, exogenous MEL increased hepatocyte proliferation and IGF-1 secretion. Meanwhile, the MEL enhancements were suppressed by prazosin (selective Mel1c antagonist), followed by luzindole (nonselective Mel1a/Mel1b antagonist), but not suppressed by 4-phenyl-2-propionamideotetralin (selective Mel1b antagonist). These findings demonstrated that MEL mediated the monochromatic light-induced secretion of IGF-1 in chicks' livers by Mel1c and that Mel1a may be involved in this process.

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Section: Introductionmentioning

confidence: 86%

Melatonin Mediates Monochromatic Light‐induced Insulin‐like Growth Factor 1 Secretion of Chick Liver: Involvement of Membrane Receptors

Cao

Wang

et al. 2016

Photochem & Photobiology

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“…A previous study reported that RL increased the expression of GnRH‐I mRNA in white leghorn hens . Furthermore, blue light induced gonadal regression of the reproductive responses of Japanese quail, and green low intensity lighting accelerated gonadal maturation in yellowtail damselfish Chrysiptera parasema . These results indicate that monochromatic light can influence the expression of hypothalamic GnRH‐I in chickens.…”

Section: Discussionmentioning

confidence: 52%

Green light inhibits GnRH‐I expression by stimulating the melatonin‐GnIH pathway in the chick brain

Zhang

Chen

Cao

et al. 2017

J Neuroendocrinology

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To study the mechanism by which monochromatic light affects gonadotrophin-releasing hormone (GnRH) expression in chicken hypothalamus, a total of 192 newly-hatched chicks were divided into intact, sham-operated and pinealectomy groups and exposed to white (WL), red (RL), green (GL) and blue (BL) lights using a light-emitting diode system for 2 weeks. In the GL intact group, the mRNA and protein levels of GnRH-I in the hypothalamus, the mean cell area and mean cell optical density (OD) of GnRH-I-immunoreactive (-ir) cells of the nucleus commissurae pallii were decreased by 13.2%-34.5%, 5.7%-39.1% and 9.9%-17.3% compared to those in the chicks exposed to the WL, RL and BL, respectively. GL decreased these factors related to GnRH-I expression and the effect of GL was not observed in pinealectomised birds. However, the mRNA and protein levels of hypothalamic gonadotrophin-inhibitory hormone (GnIH) and GnIH receptor (GnIHR), the mean cell area and mean cell OD of the GnIH-ir cells of the paraventricularis magnocellularis, and the plasma melatonin concentration in the chicks exposed to GL were increased by 18.6%-49.2%, 21.1%-60.0% and 8.6%-30.6% compared to the WL, RL and BL intact groups, respectively. The plasma melatonin concentration showed a negative correlation with GnRH-I protein and a positive correlation with GnIH and GnIHR proteins. Protein expression of both GnRH-I and GnIHR showed a negative correlation in the hypothalamus. After pinealectomy, GnRH-I expression increased, whereas plasma melatonin concentration, GnIH and GnIHR expression decreased, and there were no significant differences among the WL, RL, GL and BL groups. Double-labelled immunofluorescence showed that GnIH axon terminals were near GnRH-I neurones, some GnRH-I neurones coexpressed with GnIHR and GnIH neurones coexpressed with melatonin receptor subtype quinone reductase 2. These results demonstrate that green light inhibits GnRH-I expression by increasing melatonin secretion and stimulating melatonin receptor-GnIH-GnIH receptor pathway in the chick brain.

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“…The intermediate photoperiod was thus used to stimulate follicular development of the control group birds (12h/24d) and enable comparison with the light restriction birds (8h/24d and 8h/36d groups). The white and fluorescent lighting has been used as control by Yadav and Chaturvedi (2015), but with a brightness production of 100 lux, lower than that used in this study (220-270 lux). When we consider the application of the results for pet birds, it is necessary to pay attention to the fact that the fluorescent lamp is widely used all over the world and the brightness normally found in the home environment can vary between 100 and 200 lux (Brazilian regulation ABNT NBR ISO/CIE 8995-1) in addition to natural light to which they are exposed.…”

Section: Discussionmentioning

confidence: 99%

Ovarian radiographic and direct measurements of Japanese Quail ( Coturnix coturnix japonica ) submitted to light restriction

Albuquerque

Guedes

Dornbusch

et al. 2017

Arq. Bras. Med. Vet. Zootec.

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Often, in pet birds, any stimulus to lay eggs is unwanted in order to reduce reproductive diseases and disorders. The objectives of this study were: to determine the time necessary to promote ovary involution after an eight hour photoperiod using laying Japanese quails (Coturnix coturnix japonica); to connect the ovarian radiographic measurements with egg production; and to compare these measurements with direct ovary data obtained at necropsy. Birds were separated into three groups: 12h/24d (control group -12h photoperiod for 24 days), 8h/24d and 8h/36d (8h photoperiod for 24 and 36 days). After euthanasia, all cadavers were x-rayed to measure ovary length and height. Birds were necropsied to measure ovarian length and weight. Results: radiographic ovary length demonstrated strong and positive correlation (r=0.96) with direct ovary length of all three groups; laying quails showed higher ovary height (p=0.025) and length (p=0.009) than non-laying quails; eight hours of artificial light per day promotes ovary length (p=0.025) and weight (p=0.009) reduction. Conclusions: radiography can estimate the ovary measure and indicate posture; an eight hour photoperiod of 24 days is not enough to promote ovarian regression, while the use of reduced photoperiod for 36 days promotes significant ovary involution. Keywords

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Light colour and intensity alters reproductive/seasonal responses in Japanese quail

Cited by 15 publications

References 44 publications

Melatonin Mediates Monochromatic Light‐induced Insulin‐like Growth Factor 1 Secretion of Chick Liver: Involvement of Membrane Receptors

Melatonin Mediates Monochromatic Light‐induced Insulin‐like Growth Factor 1 Secretion of Chick Liver: Involvement of Membrane Receptors

Green light inhibits GnRH‐I expression by stimulating the melatonin‐GnIH pathway in the chick brain

Ovarian radiographic and direct measurements of Japanese Quail ( Coturnix coturnix japonica ) submitted to light restriction

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