Huth Jesse C, Archer Gregory S
Department of Poultry Science, Texas A&M University.
Department of Poultry Science, Texas A&M University
Poult Sci. 2015 Sep;94(9):2027-36. doi: 10.3382/ps/pev215. Epub 2015 Jul 21.
The poultry industry is currently undergoing a shift to alternative lighting sources as incandescent lights become less available. While LED and CFL bulbs both have associated increased energy savings, they may affect the bird's growth and well-being differently as they output different light spectrums. To determine how different LED bulbs and a CFL bulb affected broiler performance, behavior, stress, and overall well-being, we conducted an experiment using Cobb broiler chickens (N=360). A NextGen LED bulb (NextGen), a Once Innovations LED bulb (Once), and a dimmable CFL (CFL) were used, all of which had different spectral outputs. Growth and feed conversion, several stress measures, fear tests, organ characteristics, and animal welfare assessment parameters were collected to determine how each light type affected animal well-being. LED treatments had shorter (P<0.05) latency to right during tonic immobility testing when compared to the CFL treatment; however, no other differences (P>0.05) were seen in the other fear tests. The Once treatment resulted in lower composite physical asymmetry, heterophil/lymphocyte ratio, and basal plasma corticosterone concentrations compared to the other treatments (P<0.05). Differences were observed in some organ measures; notably in the eye dimensions of the Once treatment. The Once treatment also had lower (P<0.05) plumage, hock, and footpad scores when compared to CFL treatment, while the Nextgen treatment had lower (P<0.05) plumage and hock scores than the CFL treatment but no difference between the two was seen in foot pad scores. Weight at the end of the growout was not affected by bulb type, however, both LED treatments had increased feed conversion (P<0.05). These results indicate that LEDs can result in better well-being and feed conversion when compared to CFLs. It is also notable that the LEDs did not have the same effects and this is likely due to the spectrum of light each creates. LEDs were shown to improve production and well-being of broiler chickens compared to CFLs.
随着白炽灯的供应日益减少，家禽养殖业目前正转向使用其他照明光源。虽然LED灯泡和紧凑型荧光灯（CFL）都能带来更高的节能效果，但由于它们输出的光谱不同，可能会对家禽的生长和健康产生不同的影响。为了确定不同的LED灯泡和一个CFL灯泡对肉鸡的生长性能、行为、应激和整体健康状况有何影响，我们使用科宝肉鸡（N = 360）进行了一项实验。实验使用了一种下一代LED灯泡（NextGen）、一种Once Innovations LED灯泡（Once）和一个可调光的CFL（CFL），它们都有不同的光谱输出。我们收集了生长和饲料转化率、多种应激指标、恐惧测试、器官特征以及动物福利评估参数，以确定每种光照类型如何影响动物的健康状况。与CFL处理相比，在强直性静止测试中，LED处理的右侧潜伏期较短（P<0.05）；然而，在其他恐惧测试中未观察到其他差异（P>0.05）。与其他处理相比，Once处理导致复合身体不对称性、嗜异性粒细胞/淋巴细胞比率和基础血浆皮质酮浓度较低（P<0.05）。在一些器官测量中观察到了差异；特别是在Once处理的眼睛尺寸方面。与CFL处理相比，Once处理的羽毛、跗关节和脚垫评分也较低（P<0.05），而Nextgen处理的羽毛和跗关节评分比CFL处理低（P<0.05），但在脚垫评分方面两者没有差异。出栏结束时的体重不受灯泡类型的影响，然而，两种LED处理的饲料转化率都有所提高（P<0.05）。这些结果表明，与CFL相比，LED可以带来更好的健康状况和饲料转化率。同样值得注意的是，不同的LED效果不同，这可能是由于它们各自产生的光谱不同。与CFL相比，LED被证明可以提高肉鸡的生产性能和健康状况。
