Soliman Essam S, Hassan Rania A
Department of Animal Hygiene, Zoonosis, and Animal Behavior, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt.
Department of Animal Wealth Development, Animal Production Division, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt.
Vet World. 2019 Jul;12(7):1052-1059. doi: 10.14202/vetworld.2019.1052-1059. Epub 2019 Jul 17.
Manipulating lighting colors and regimens is considered an effective mean for improving broiler productivity. The influence of red, blue, and white light-emitting diode (LED) was investigated using three different regimens of lighting and darkness; continuous 23 h light (L):1 h dark (D), continuous 18 h L:6 h D, and intermittent 16 h L:8 h D hours on the performance, carcass weight (CW), feed and water intake (WI), serum glucose (GLUCO), triglycerides (TG), and cholesterol (TC), intestinal bacterial load, growth and metabolic hormones, and efficiency of Newcastle disease (ND) vaccine.
A total of 252 1-day-old Ross broilers on deep litter were divided into nine groups. The 1, 4, and 7 groups were exposed to continuous 23L:1D, the 2, 5, and 8 groups were exposed to continuous 18L:6D, and the 3, 6, and 9 groups were exposed to intermittent 16L:8D (4L:2D, 4 times) lighting regimen using red, blue, and white LED lights, respectively. A total of 1350 samples (225 sera, 225 swabs, and 900 organ samples) were collected.
Blue LED group revealed a highly significant increase (p<0.01) in live body weight, body weight gain, performance index, CW, spleen, heart, and liver weights, and anti-ND antibody titer, as well as a highly significant decline (p<0.01) of feed intake, WI, GLUCO, TG, TC, growth hormone, insulin, tri-iodothyronine (T3), tetra-iodothyronine (T4), total bacterial count (TBC), and total count compared to red and white LED lights in all tested lighting regimens. Continuous 23L:1D and 18L:6D regimens were significantly (p<0.01) superior to intermittent 16L:8D in their influence on the performance, CW, biochemistry, hormonal profile, and bacterial load.
The blue LED light associated with continuous 18L:6D or 23L:1D h regimen is highly recommended in broiler houses for their enhancing the productive performance, growth, and immunity.
控制光照颜色和方案被认为是提高肉鸡生产性能的有效手段。本研究使用三种不同的光照与黑暗方案，研究红色、蓝色和白色发光二极管（LED）光对肉鸡生产性能、胴体重（CW）、采食量和饮水量（WI）、血清葡萄糖（GLUCO）、甘油三酯（TG）和胆固醇（TC）、肠道细菌载量、生长和代谢激素以及新城疫（ND）疫苗效率的影响。
将252只1日龄的罗斯肉鸡饲养在厚垫料上，分为9组。第1、4和7组采用连续23小时光照（L）：1小时黑暗（D）的方案，第2、5和8组采用连续18小时L：6小时D的方案，第3、6和9组采用间歇16小时L：8小时D（4小时L：2小时D，共4次）的光照方案，分别使用红色、蓝色和白色LED灯。共采集了1350个样本（225份血清、225份拭子和900份器官样本）。
与红色和白色LED灯相比，在所有测试的光照方案中，蓝色LED灯组的活体重、体重增加、生产性能指数、CW、脾脏、心脏和肝脏重量以及抗ND抗体滴度均显著升高（p<0.01），而采食量、WI、GLUCO、TG、TC、生长激素、胰岛素、三碘甲状腺原氨酸（T3）、四碘甲状腺原氨酸（T4）、总细菌计数（TBC）和总数均显著下降（p<0.01）。连续23L：1D和18L：6D方案在对生产性能、CW、生化指标、激素水平和细菌载量的影响方面显著优于间歇16L：8D方案（p<0.01）。
强烈建议在肉鸡舍中使用与连续18L：6D或23L：1D光照方案相关的蓝色LED灯，因为它们可以提高生产性能、促进生长和增强免疫力。
