Effects of monochromatic green light stimulation during embryogenesis on hatching and posthatch performance of four strains of layer breeder

Poultry Science

Yanyan Sun¹  Xiaolin Liu²  Jilan Chen³  Yunhe Zong⁴  Linlin Jiang⁴  Yuanmei Wang⁴  Lei Shi⁴  Hui Ma⁴  Pingzhuang Ge⁴  Panlin Wang⁴  Adamu Mani Isa⁴  Yunlei Li⁴  Shixiong Bian⁴  Runshen Jiang⁴  Jing Fan⁴  Aixin Ni⁴ 

[1] College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China;College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China;College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China;Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction, Ministry of Agriculture, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China;

关键词: incubation;    green light;    hatching time;    hatch window;    posthatch growth;   

DOI  :  

来源: DOAJ

【 摘 要 】

Providing green light during incubation has been shown to accelerate the embryo development and shorten the hatching time in broilers. Few studies have concentrated on the exact effects on layer breeders in the aspects of hatching and posthatch performance. In this study, 4 strains of layer breeder eggs, namely White Leghorn, Rhode Island Red, Columbia Rock, and Barred Rock were used to assess the effects of monochromatic green light during embryogenesis on hatching performance, chick quality, and pubertal growth. Each strain of 600 eggs was incubated under photoperiods of either 12 h of light and 12 h of darkness (12L:12D, light group) or 0 h of light and 24 h of darkness (0L:24D, dark group) for 18 D, with 2 replicates for each treatment. The results showed hatch time, time reaching 90% hatch, and average hatch time were significantly shorter among the 4 strains in the light group (P < 0.01). In addition, hatch window and peak hatching period were not extended by the green light stimulation (P > 0.05). There was no significant difference in hatchability of fertile eggs, chick weight/egg weight, or chick quality among the 4-strain eggs between the light group and dark group (P > 0.05). There was no difference (P > 0.05) in posthatch BW between different light treatments of the 3 strains (White Leghorn, Columbia Rock, and Barred Rock), whereas the BW of Rhode Island Red was higher in light group than that of the dark group at 8 to 12 wk of age (P < 0.05) and the difference disappeared from week 14. The results demonstrate that 12L:12D monochromatic green light stimulation during embryogenesis shortens the hatching time with no negative effects on hatching and posthatch performance. These effects were consistent among the 4 layer strains.

【 授权许可】

Unknown