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monochromatic green light stimulation during incubation shortened the hatching time via pineal function in White Leghorn eggs

引用

Journal of Animal Science and Biotechnology 2021年第3期12卷 1226-1235页

作者： Panlin Wang Yanyan Sun Yunlei Li Jing Fan Yunhe Zong Adamu Mani Isa Lei Shi Yuanmei Wang Aixin Ni Pingzhuang Ge Linlin Jiang Shixiong Bian Hui Ma Zhengdong Yuan Xiaolin Liu Jilan Chen Institute of Animal Sciences Chinese Academy of Agricultural SciencesKey Laboratory of Animal(Poultry)Genetics Breeding and ReproductionMinistry of Agriculture and Rural AffairsBeijing 100193China College of Animal Science and Technology Northwest A&F UniversityYangling 712100China Beijing DQY Agricultural Science and Technology Co. Ltd.Beijing 100094China

Background:Effect of monochromatic green light illumination on embryo development has been reported in *** avian pineal gland is an important photo-endocrine organ formed by a mediodorsal protrusion during embryonic ***,the involvement of pineal gland in the light transduction process remains to be *** the present study,we investigated the influence of monochromatic green light on hatching time and explored the possible mechanism via pineal ***:A total of 600 eggs of White Leghorn(Shaver strain)were incubated under photoperiods of either 12 h of light and 12 h of darkness using monochromatic green light(12L:12D group)or 24 h of darkness(0L:24D group)for 18 *** to 0L:24D group,the green light stimulation shortened the hatching time without extending the hatch window or impairing *** liver of embryos incubated in the 12L:12D light condition was heavier than those of the 0L:24D group on d 21 post incubation which may be linked to the observed increase in the serum concentration of insulin-like growth factor 1(IGF-1);primary secretion of the *** structure analysis of pineal gland demonstrated that the light stimulation increased follicle area,wall thickness and lumen area on d 10 and d 12 post *** function analysis demonstrated that three clock related genes(brain and muscle ARNT-like-1,BMAL1;circadian locomotor output cycles kaput,CLOCK;and cryptochrome-1,CRY1)and a melatonin rate-limiting enzyme related gene(arylalkylamine N-acetyltransferase,AANAT)were rhythmically expressed in the pineal gland of the 12L:12D group,but not in the 0L:24D ***,the light stimulation also increased the concentration of melatonin(MT),which was linked to hepatocyte proliferation and IGF-1 secretion in previous ***:The 12L:12D monochromatic green light stimulation during incubation shortened hatching time without impairing hatching *** gland’s ear

关键词： Circadian rhythm Hatching time Insulin-like growth factor 1 Melatonin monochromatic green light Pineal gland

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