Effects of different light-emitting diode light on hatch performance, embryo development, eye structure, and plasma melatonin in layer incubation

W.Y. Tang; Q. Tong; B.M. Li; W.C. Zheng; J.M. Pan; X.C. Wang; X. Liu; K. Jin

Poultry Science (Oct 2023)

Effects of different light-emitting diode light on hatch performance, embryo development, eye structure, and plasma melatonin in layer incubation

W.Y. Tang,
Q. Tong,
B.M. Li,
W.C. Zheng,
J.M. Pan,
X.C. Wang,
X. Liu,
K. Jin

Affiliations

W.Y. Tang: Department of Agricultural Structure and Environmental Engineering, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
Q. Tong: Department of Agricultural Structure and Environmental Engineering, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Agricultural Engineering in Structure and Environment Ministry of Agriculture and Rural Affairs, Beijing 100083, China; Beijing Engineering Research Center on Animal Healthy Environment, Beijing 100083, China; Corresponding author:
B.M. Li: Department of Agricultural Structure and Environmental Engineering, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Agricultural Engineering in Structure and Environment Ministry of Agriculture and Rural Affairs, Beijing 100083, China; Beijing Engineering Research Center on Animal Healthy Environment, Beijing 100083, China
W.C. Zheng: Department of Agricultural Structure and Environmental Engineering, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Agricultural Engineering in Structure and Environment Ministry of Agriculture and Rural Affairs, Beijing 100083, China; Beijing Engineering Research Center on Animal Healthy Environment, Beijing 100083, China
J.M. Pan: Department of Biosystems Engineering, Zhejiang University, Hangzhou 310058, China
X.C. Wang: Department of Agricultural Structure and Environmental Engineering, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
X. Liu: Department of Agricultural Structure and Environmental Engineering, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
K. Jin: Department of Agricultural Structure and Environmental Engineering, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China

Journal volume & issue: Vol. 102, no. 10
p. 102977

Abstract

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ABSTRACT: Light intensity, wavelength, and photoperiod have a combined effect on chicken incubation. This study was conducted to evaluate the effect of 12-h light, 12-h dark (12L:12D) photoperiod of white light (380–780 nm, WL), blue light (455/447.5–462.5 nm, BL), and green light (525/515–535 nm, GL) in chicken perceived light intensity during layer incubation on hatching performance, embryo development, eye structure, and melatonin concentration. Three batches of eggs from Jinghong No. 1 layer breeder were used in this experiment. Light stimulation had no effect on hatchability, and no consistent effect on embryo weight and newly hatched chick weight. However, the average hatching time of white light group and green light group was 7.3 h and 5.5 h later than that of the control group. Therefore, the holding period of chicks was significantly shortened (P = 0.001) in these 2 light groups. Light stimulation had a significant effect on the thickness of retinal layers (P < 0.05), retinal layers of white light group was thicker than that of the other 3 groups. Melatonin levels of chicks hatched in the green light and blue light were significantly higher than that of chicks hatched in the white light and darkness (P < 0.05). It indicated that the monochrome green and blue light promoted the expression of melatonin in chicken embryos. No significant diurnal rhythms were found at the level of plasma melatonin in 4 groups on d 21 using cosine analysis. It was concluded that green light has a positive effect on embryo development and melatonin secretion, while white light probably has positive effect on eye development. Furthermore, both green and white light stimulation resulted in late hatch for layer egg incubation. The obtained results are important in determining the light protocol for chicken incubation.

Published in Poultry Science

ISSN: 0032-5791 (Print); 1525-3171 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Agriculture: Animal culture
Website: https://www.journals.elsevier.com/poultry-science

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