不同水平有机锰(明微矿锰)对肉鸡生长、免疫力和抗氧化活性的影响

试验考察了不同剂量羟基蛋氨酸螯合锰--明微矿锰(Mintrex Mn)对0～3周龄肉鸡生长性能、免疫力以及抗氧化活性的影响。试验选用540只1日龄爱拔益加(AA)雄性肉仔鸡,随机分成5组,每组设9个重复,每个重复6只鸡。含27.86mg/kg锰的玉米-豆粕型基础日粮为负对照组,在基础日粮中添加60mg/kg硫酸锰为正对照组,添加30、60、90mg/kg有机锰为试验组,试验期为21d。结果表明,基础日粮中添加有机锰或无机锰对0～3周龄肉鸡体增重、采食量、料肉比没有显著影响,但与硫酸锰添加组相比,添加30、60、90mg/kg有机锰有提高肉鸡日增重的趋势,且随着有机锰添加量的增加肉鸡日增重也逐渐提高;饲料利用率和胫骨锰含量呈线性显著改善和增加(P≤0.05);有机锰能够显著提高0～3周龄肉鸡免疫力和抗氧化活性,添加60mg/kg、90mg/kg Mintrex Mn增加巨噬细胞吞噬指数和血清中谷胱甘肽过氧化物酶和肝脏中锰超氧化物歧化酶酶活,其效果显著高于无机硫酸锰添加组,而添加60mg/kgMintrex Mn能更好地促进肠道免疫球蛋白的分泌和降低肝脏脂质过氧化物的沉积。因此,从肉鸡的生长性能来看,添加使用有机...

Effects of Mintrex Mn on Growth Performance,Immunity and Anti-oxidation Activity in Broilers

The purpose of this study was to investigate the effect of different levels of methionine hydroxy chelated Mn (Mintrex Mn) on growth performance,immunity and antioxidant status in 0 to 3-week-age wks old broilers. Total of 540 one-day-age Arbor Acres male broilers were randomly allotted to 5 treatments of 9 replicates (cages) with 6 chicks per replicate. A corn-soybean meal diet with 27.86 mg/kg Mn was used as negative control. The basal diet supplemented with Mn sulfate at 60 mg/kg served as a positive con...