Yang Ye-Feng, Jiang Jing-Song, Pan Jin-Ming, Ying Yi-Bin, Wang Xiao-Shuang, Zhang Ming-Li, Lu Min-Si, Chen Xian-Hui
Department of Biosystems Engineering, Zhejiang University, Hangzhou 310058, China.
Zhejiang Guangda Breeding Poultry Corporation, Jiaxing 314423, China.
Sci Rep. 2016 Jan 14;6:19291. doi: 10.1038/srep19291.
A previous study demonstrated that birds that are exposed to light at night develop advanced reproductive systems. However, spectrum might also affect the photoperiodic response of birds. The present study was aimed to investigate the effects of spectral composition on the growth and reproductive physiology of female breeders, using pure light-emitting diode spectra. A total of 1,000 newly hatched female avian breeders (Gallus gallus) were equally allocated to white-, red-, yellow-, green- and blue-light treated groups. We found that blue-light treated birds had a greater and faster weight gain than did red- and yellow-light treated birds (P = 0.02 and 0.05). The red light expedited the sexual maturation of the chicks, whose age at sexual maturity was 7 and 14 days earlier than that of the green- and blue-light treated birds, respectively. The accumulative egg production of the red-light treated birds was 9 and 8 eggs more than that of the blue- and green-light treated birds. The peak lay rate of the red-light treated groups was significantly greater than the blue-light treated birds (P = 0.028). In conclusion, exposure to short-wavelength light appears to promote growth of female breeder birds, whereas exposure to long-wavelength light appears to accelerate reproductive performance.
先前的一项研究表明，夜间暴露于光照下的鸟类会发育出先进的生殖系统。然而，光谱也可能影响鸟类的光周期反应。本研究旨在使用纯发光二极管光谱，研究光谱组成对雌性繁殖鸟生长和生殖生理的影响。总共1000只新孵化的雌性家禽繁殖鸟（原鸡）被平均分配到白光、红光、黄光、绿光和蓝光处理组。我们发现，蓝光处理的鸟比红光和黄光处理的鸟体重增加更大且更快（P = 0.02和0.05）。红光加速了雏鸡的性成熟，其性成熟年龄分别比绿光和蓝光处理的鸟早7天和14天。红光处理的鸟的累计产蛋量比蓝光和绿光处理的鸟多9个和8个。红光处理组的产蛋高峰率显著高于蓝光处理的鸟（P = 0.028）。总之，暴露于短波长光似乎能促进雌性繁殖鸟的生长，而暴露于长波长光似乎能加速生殖性能。
