West Bengal University of Animal & Fishery Sciences, 37 K.B. Sarani, Kolkata-37, India.
Br Poult Sci. 2011 Oct;52(5):573-7. doi: 10.1080/00071668.2011.608649.
A study was conducted to estimate the effect of copper (Cu) supplementation on growth performance and biochemical profiles of blood and meat in broiler chickens. A total of 240 d-old broiler chicks (Vencobb-100) were randomly divided into 12 groups, each of 20 chicks (4 treatments x 3 replicates). The basal diet (T₁) contained 215 g kg⁻¹ crude protein (CP), 12·76 MJ kg⁻¹ ME, 32 g kg⁻¹ total calcium and 5 g kg⁻¹ total phosphorus. T₂, T₃ and T₄ were formulated to contain an additional 75, 150 and 250 mg Cu kg⁻¹ diet, respectively. Copper sulphate pentahydrate (CuSO₄, 5H₂O) was used as the source of Cu. Significant reductions in plasma total cholesterol and triglyceride, and an elevated concentration of HDL-cholesterol, were observed in the chickens fed with 250 mg Cu kg⁻¹ (T₄) of feed at the 3rd and 6th week of the experiment. Total cholesterol in meat decreased significantly in the birds fed with dietary Cu at 250 mg kg⁻¹ (T₄) of feed. Growth performance was measured in terms of live weight gain, cumulative feed intake and feed conversion ratio at the end of d 21 and d 42 of the experiment, and the result was found to be commercially beneficial for the chickens receiving 150 mg Cu kg⁻¹ (T₃) of diet. The concentration of Cu in breast muscle and liver increased significantly at the end of experiment. From this study it can be concluded that supplementation with dietary Cu may be beneficial for production performance and plasma biochemical characteristics of broiler chickens.
一项研究旨在评估铜（Cu）补充对肉鸡生长性能和血液及肉质生化指标的影响。总共 240 日龄的肉鸡（Vencobb-100）被随机分为 12 组，每组 20 只鸡（4 种处理×3 个重复）。基础日粮（T₁）含有 215g/kg 粗蛋白（CP）、12.76MJ/kg 代谢能、32g/kg 总钙和 5g/kg 总磷。T₂、T₃ 和 T₄ 分别添加 75、150 和 250mg/kg 日粮铜。五水硫酸铜（CuSO₄·5H₂O）用作铜源。在实验的第 3 和第 6 周，饲喂 250mg/kg 日粮铜（T₄）的鸡血浆总胆固醇和甘油三酯显著降低，高密度脂蛋白胆固醇浓度升高。饲喂含 250mg/kg 日粮铜（T₄）的鸡的肌肉中总胆固醇显著降低。在实验的第 21 天和第 42 天，通过活体重增重、累计采食量和饲料转化率来衡量生长性能，结果发现饲喂 150mg/kg 日粮铜（T₃）的鸡具有商业效益。实验结束时，胸肌和肝脏中的铜浓度显著增加。综上所述，日粮补充铜可能有益于肉鸡的生产性能和血浆生化特性。
