Department of Animal Nutrition, C.V.Sc. &A.H., OUAT, Bhubaneswar, India.
Centre Coordinator, GIET University, Raygada, Gunupur, Odisha, India.
Trop Anim Health Prod. 2023 Jul 5;55(4):260. doi: 10.1007/s11250-023-03678-1.
The present experiment was aimed at finding the optimal supplemental dose of nano-selenium in broiler chicken during the summer season for better performance in terms of growth, blood metabolites, immune response, antioxidant status, and selenium concentration in vital organs. Three-hundred-day-old Vencobb broiler chicks were randomly distributed into five dietary treatment groups with six replicates of 10 chicks each. The dietary treatments were as follows: T1 (control group), basal diet; T2, basal diet with 0.0375 ppm of nano-Se; T3, basal diet with 0.075 ppm of nano-Se; T4, basal diet with 0.15 ppm of nano-Se; T5, basal diet with 0.3 ppm of nano-Se. The experiment was carried out for 35 days. The average gain and feed conversion ratio were best observed in T4 and T5. The antibody titres were significantly higher (P < 0.05) in the treated birds. At the 5th week, erythrocytic glutathione peroxidase, catalase, and superoxide dismutase activities were significantly (P < 0.05) higher and lipid peroxidation values were significantly (P < 0.05) lower in all the nano-Se-treated groups. The Se levels in the liver, breast muscle, kidney, brain, and gizzard were significantly (P < 0.05) increased with increased dietary nano-Se. Histological studies of the liver and kidney in the highest nano-Se-treated groups (T4 and T5) did not show any abnormal changes. It is concluded that supplementation of nano-selenium at 0.15 ppm over and above the basal level improved the performance and protect the birds from summer stress without any adverse effect on the vital organs of chicken.
本实验旨在寻找夏季肉鸡日粮中纳米硒的最佳补充剂量，以提高生长性能、血液代谢物、免疫反应、抗氧化状态和重要器官中的硒浓度。将 300 日龄的 Vencobb 肉鸡雏鸡随机分为 5 个日粮处理组，每个处理组 6 个重复，每个重复 10 只鸡。日粮处理如下：T1（对照组），基础日粮；T2，基础日粮添加 0.0375ppm 纳米硒；T3，基础日粮添加 0.075ppm 纳米硒；T4，基础日粮添加 0.15ppm 纳米硒；T5，基础日粮添加 0.3ppm 纳米硒。实验进行了 35 天。T4 和 T5 组的平均增重和饲料转化率最好。处理组的抗体滴度显著升高（P<0.05）。第 5 周时，所有纳米硒处理组的红细胞谷胱甘肽过氧化物酶、过氧化氢酶和超氧化物歧化酶活性显著升高（P<0.05），脂质过氧化值显著降低（P<0.05）。肝脏、胸肌、肾脏、大脑和肌胃中的硒水平随着日粮中纳米硒的增加而显著升高（P<0.05）。最高纳米硒处理组（T4 和 T5）的肝脏和肾脏组织学研究未显示任何异常变化。综上所述，基础日粮添加 0.15ppm 以上的纳米硒可提高生产性能，保护鸡群免受夏季应激，且对鸡的重要器官无不良影响。
