Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, 210014, China; Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China.
College of Engineering, Nanjing Agricultural University, Nanjing, 210031, China.
Anim Reprod Sci. 2019 May;204:131-139. doi: 10.1016/j.anireprosci.2019.03.015. Epub 2019 Mar 29.
Photoperiodic control is essential for manipulating the reproductive performance of avian species. This study was conducted to assess the neuroendocrine mechanisms that regulate reproductive functions of Yangzhou geese when there are different monochromatic light colors from light emitter diode (LED) sources. A flock of geese was divided into four groups with white, red, blue, and green light treatments being imposed. The results indicated that peak laying rates and reproductive performance were greater in geese treated with white or red as compared with blue or green light treatments. The fertilization rate of eggs and hatchability of fertilized eggs were greater with the white or red as compared with blue or green light treatments. There was a greater abundance of OPN5, Dio2, c-Fos, and GnRH-I mRNA in the hypothalamus earlier in the treatment period and abundances of these hypothalamic factors were greater with the white or red light treatments. Abundances of pituitary LH beta and FSH beta mRNA increased at a lesser rate with the blue or green light treatments and were in greater abundances with the white or red light treatments. The lighting regimen also resulted in photo-refractoriness with there being greater abundances of GnIH, VIP, and PRL mRNA with the use of white or red light treatments. The results indicate that the use of white or red monochromatic lights while imposing a long photoperiod of 11 h daily could result in sustaining functions of the reproductive system of Yangzhou geese for considerably longer times, thus, resulting in greater egg-laying performance.
光周期调控对于调控禽类的繁殖性能至关重要。本研究旨在评估不同单色光（发光二极管 LED）源对扬州鹅繁殖功能的神经内分泌调控机制。一群鹅被分为四组，分别接受白光、红光、蓝光和绿光处理。结果表明，与蓝光或绿光处理相比，白光或红光处理的产蛋高峰期率和繁殖性能更高。与蓝光或绿光处理相比，白光或红光处理的鸡蛋受精率和受精蛋孵化率更高。在处理早期，下丘脑的 OPN5、Dio2、c-Fos 和 GnRH-I mRNA 丰度更高，而白光或红光处理的这些下丘脑因子的丰度更高。垂体 LHβ和 FSHβmRNA 的丰度增加速度较慢，而白光或红光处理的丰度更高。光照方案还导致了光反射性，与使用白光或红光处理相比，GnIH、VIP 和 PRL mRNA 的丰度更高。结果表明，在每天 11 小时的长光周期下使用白光或红光，可使扬州鹅的生殖系统功能维持更长时间，从而提高产蛋性能。
