Department of Poultry Production, Faculty of Animal Production and Technology, University of Veterinary and Animal Sciences, Lahore, Pakistan.
Department of Poultry Science, Faculty of Veterinary and Animal Sciences, Muhammad Nawaz Shareef University of Agriculture, Multan, Pakistan.
Trop Anim Health Prod. 2024 May 9;56(4):146. doi: 10.1007/s11250-024-04000-3.
This study was planned to evaluate the impact of dichromatic lights during incubation on the hatching and post-hatch performance of broiler chickens. A total of 500 eggs of broiler breeder (Ross 308; Age 44 weeks) were evenly divided according to a completely randomized design into 4 treatments having 5 replicates and 25 eggs each. Treatments consisted of dichromatic lights Blue + Red (BR), Green + Red (GR) and Green + Blue (GB) provided at an intensity of 250 lx for 12 h a day along with a Dark (D) environment. After hatching 200 chicks (50 from each respective light group) were divided into 4 treatments with 5 replicates each having 10 chicks. Results indicated a higher embryo index (13.12%) in the GR group on the 12th day of incubation; while an ideal hatch window was observed in GR and GB (98.18% and 96.00% hatched chicks) lighting groups. In hatching traits, higher hatchability (86.15) and hatch of fertile (93.85) percentages were observed in GR lighting followed by GB, BR and Dark treatment groups; while dead-in shell embryos were lowest in the GR group. In growth performance, higher feed intake (513.20 g) and body weight (479.20 g) were observed in the GB group followed by GR, BR and dark group; and feed conversion ratio (FCR) was better in the GR group (1.06). In welfare parameters, improved physical asymmetry (0.90 mm) and tonic immobility (54.40 s) were measured in the GR group followed by GB, BR and the dark group. It was concluded that under experimental conditions when broiler breeder eggs are provided with GR lighting during incubation, it can help to improve hatchability, growth performance and welfare traits in chicks.
本研究旨在评估孵化期间双色光对肉鸡孵化和出雏后性能的影响。将 500 枚肉鸡种蛋（罗斯 308；44 周龄）按完全随机设计均匀分为 4 个处理，每个处理 5 个重复，每个重复 25 枚蛋。处理包括提供强度为 250 lx 的双色光（蓝色+红色（BR）、绿色+红色（GR）和绿色+蓝色（GB）），每天 12 小时，以及黑暗（D）环境。出雏后，从每个光照组中各取 50 只雏鸡，共 200 只雏鸡，分为 4 个处理，每个处理 5 个重复，每个重复 10 只雏鸡。结果表明，孵化第 12 天，GR 组胚胎指数（13.12%）较高；而 GR 和 GB（98.18%和 96.00%出雏雏鸡）光照组观察到理想的出雏窗口。在出雏性状方面，GR 光照组出雏率（86.15%）和受精率（93.85%）较高，其次是 GB、BR 和黑暗处理组；而 GR 组死胚率最低。在生长性能方面，GB 组的采食量（513.20g）和体重（479.20g）较高，其次是 GR、BR 和黑暗组；GR 组的饲料转化率（FCR）较好（1.06）。在福利参数方面，GR 组的身体不对称性（0.90mm）和紧张性不动（54.40s）得到改善，其次是 GB、BR 和黑暗组。在实验条件下，当肉鸡种蛋在孵化期间提供 GR 光照时，可以提高雏鸡的孵化率、生长性能和福利性状。
