Influence of light sources and photoperiod on growth performance, carcass characteristics, and health indices of broilers grown to heavy weights
Influence of light sources and photoperiod on growth performance, carcass characteristics, and health indices of broilers grown to heavy weights
复制标题
DOI：
10.3382/ps/pex426
复制
发表时间：
2018-04-01
期刊：
影响因子：
4.4
通讯作者：
Branton, S. L.
中科院分区：
文献类型：
--
作者：
Olanrewaju, H. A.;Miller, W. W.;Branton, S. L.
通过4个试验研究了不同光源和光周期对肉仔鸡生长性能、胴体特性和健康指标的影响。每组试验选用720只1日龄Ross x Ross 708只鸡，随机分配到12个环境控制的房间（30公/30母/房间）。实验设计为4 × 3因子处理，包括4种光源[白炽灯（ICD，标准），紧凑型荧光灯（CFL），中性发光二极管（neutral -LED）和家禽专用冷滤光LED (cool - psf -LED)]和3个光周期[长/连续（23L:1D），规则/间歇性（2L:2D）和短/非间歇性（8L:16D）]，从d8-d56。鸟类被喂食相同的饮食，而饲料和水是免费提供的。分别在1、14、28、42和56日龄对雏鸟和饲料称重，观察其生长性能。每天记录死亡率，并根据死亡率调整饲料转化率。在第28至35天测定免疫应答，而在第42、43和49天测定其他福利指标。在56日龄时，从每个房间随机选择10只雄性和10只雌性，并进行处理以确定体重和产量。Cool-PSF-LED饲养的鸡体重、体重增重、活重、胴体重和产量均显著提高(P
Effects of light sources and photoperiod on growth performance, carcass characteristics and health indices of broilers were investigated in 4 trials. In each trial, 720 1-day-old Ross x Ross 708 chicks were randomly distributed into 12 environmentally controlled rooms (30 males/30 females/room). The experimental design was a 4 x 3 factorial treatments consisted of 4 light sources [incandescent (ICD, standard), compact fluorescent (CFL), neutral light-emitting diode (Neutral-LED), and cool poultry-specific filtered LED (Cool-PSF-LED)] and 3 photoperiods [long/continuous (23L:1D), regular/intermittent (2L:2D), and short/non-intermittent (8L:16D)] from d8-d56. Birds were fed the same diet, while feed and water were provided ad libitum. Birds and feed were weighed on 1, 14, 28, 42, and 56 d of age for growth performance. Mortality was recorded daily and feed conversion was adjusted for mortality. Immune response was determined on d 28 to 35, whereas other welfare indices were performed on d 42, 43, and 49. At 56 d of age, 10 male and 10 female birds from each room were randomly selected and processed to determine weights and yields. The BW, BW gain, live weight, and carcass weights and yields of birds reared under Cool-PSF-LED were increased (P