Efficacy of Zinc/Creatine Supplementation on Improving Growth Performance of Local Balady Chicks

ABSTRACT An experiment was designed to study the efficacy of Zinc and or creatine monohydrate (CMH) supplementation, either alone or in combination, on improving growth performance of Balady chicks. A total number of 144 Balady chicks were randomly divided into four equal groups. The first treatment was fed the basal diet and served as control, while groups 2, 3, and 4 were given the basal diet and supplemented drinking water with, 0.6 mg/ml (zinc sulphat); 0.45 mg/ml (CMH); 0.6 mg/ml (zinc sulphat) + 0.45 mg/ml (CMH), respectively. The results indicated that the live body weight, weekly body weight gain and feed efficiency were significantly (p≤0.05) improved in all treated groups compared with the control. Also, significant decrease (p≤0.05) has been recorded in water consumption values of treated groups compared to control. Moreover, significant increase was recorded in carcass yield, kidney, spleen, bursa, thymus and intestine density (weight/length) with treated groups as compared to control group. On the other hand, serum total protein, globulin, total lipids, total antioxidant, thyroxine hormone level were significantly higher in treated groups than the control. Furthermore, Red and white blood cell counts, hemoglobin level, hematocrit values and antibody titres against Newcastle disease virus, were significantly improved in all treated groups. Therefore, it can be concluded that Zn and or CMH supplementation improved the physiological, productive traits of Balady chicks. The best significant results of performance were recorded for group the supplemented with Zn and CMH in combination compared with those of other treatments.

摘要 本实验旨在探究单独或联合补充一水肌酸（creatine monohydrate, CMH）与锌，对巴拉迪雏鸡生长性能的改善效果。本研究选取144只巴拉迪雏鸡，随机均分为4组：第1组饲喂基础日粮，作为空白对照组；第2、3、4组同样饲喂基础日粮，并分别在饮水中添加0.6 mg/ml硫酸锌（zinc sulphat）、0.45 mg/ml一水肌酸，以及0.6 mg/ml硫酸锌与0.45 mg/ml一水肌酸的复合补充剂。结果显示，与对照组相比，各处理组的活体体重、周增重及饲料转化率均显著（p≤0.05）提升；同时各处理组的饮水量较对照组显著（p≤0.05）降低。此外，各处理组的屠宰率、肾脏、脾脏、法氏囊、胸腺及肠道密度（体重/长度）均较对照组显著升高。另一方面，各处理组的血清总蛋白、球蛋白、总脂类、总抗氧化能力及甲状腺素水平均显著高于对照组。此外，各处理组的红细胞与白细胞计数、血红蛋白水平、血细胞比容值及抗新城疫病毒（Newcastle disease virus）抗体滴度均得到显著改善。综上，单独或联合补充锌与一水肌酸均可改善巴拉迪雏鸡的生理与生产性能，其中联合补充锌与一水肌酸的处理组表现出最优的生产性能指标。