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

Author:

Drozdova Angelika,Kankova Zuzana,Zeman Michal

Abstract

Lighting conditions during incubation can influence embryonic development, post-hatching ontogeny and production efficiency. Previous studies revealed that different light colours differently affect pineal melatonin biosynthesis in embryos and postembryonic development of broiler chickens, but physiological mechanisms mediating these effects are not known. Cold and warm white light consists of different wavelengths and therefore the aim of the present study was to explore if these two lights can differently influence the development of circadian melatonin biosynthesis, production of thyroid hormones and corticosterone, concentration of metabolites (glucose, cholesterol and triacylglycerols) as well as expression of two important immune genes, presenilin 1 and avian beta-defensin 1 (AvBD-1). We evaluated these traits in embryos before hatching (456, 460, 465, 468 and 472 h of incubation) and in hatchlings. The rhythmic profile of pineal melatonin with higher concentrations during the dark time was determined in both treatment groups. Melatonin levels increased considerably in hatchlings in comparison with embryos, but we found no difference in rhythm characteristics between groups. We did not identify any daily rhythms in plasma corticosterone and thyroid hormone levels in either studied age and no differences were found between light treatments in concentrations of thyroid hormones, corticosterone, metabolites and expression of presenilin and AvBD-1. The expected developmental increase of thyroid hormones was proved. Gene expression of presenilin increased in the duodenum of hatchlings in comparison with embryos, but the expression did not change in the bursa of Fabricius. On the other hand, expression of AvBD-1 decreased in hatchlings compared to embryos in both tissues. Based on these results, we can conclude that the colour temperature of white light did not influence endocrine and immune parameters determined in this study and probably monochromatic rather than polychromatic light should be used to influence embryonic development and postembryonic ontogeny of broiler chickens.

Publisher

Czech Academy of Agricultural Sciences

Subject

Animal Science and Zoology

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3