摘要
试验旨在探讨抗菌肽对肉仔鸡生产性能及免疫器官指数的影响。选择96只1日龄AA肉仔鸡,随机分成4个日粮处理组,每个日粮处理组分4个重复,每个重复6只鸡。第1组为对照组,饲喂基础日粮,第2、3、4组分别在日粮中添加100、300、600mg/kg抗菌肽,试验期21天。结果表明:日粮中添加600mg/kg水平的抗菌肽能显著提高21天AA肉仔鸡的平均日增重(P〈0.05),添加300mg/kg、600mg/kg水平的抗菌肽能使其料重比显著降低(P〈0.05)。21日龄时抗菌肽处理组的胸腺指数和脾脏指数与对照组比较没有差异(P〉0.05);而600mg/kg抗菌肽组的法氏囊指数显著高于对照组(P〈0.05)。添加抗菌肽对肉仔鸡的IgM、溶菌酶及白蛋白含量没有显著影响(P〉0.05)。但300mg/kg及600mg/kg抗菌肽组的IgG水平显著高于对照组(P〈0.05)。这表明抗菌肽能显著提高肉鸡的生产性能,改善免疫功能。
An experiment was conducted to study the effects of different doses of antimicrobial peptides on growth performance and immune function of broilers. A total of 96, 1 d old AA broilers were randomly allotted to four dietary treatments (6 birds per pen with 4 pens per treatment). The control group were fed with the basal diet alone, the other treatments fed the basal diet supplemented with 100,300,600 mg/kg antimierobial peptides, respectively. The experiment period were 21d. The results showed that supplementing 600 mg/kg antimicrobial peptides significandy increased average daily gain (ADG) of 21d AA broilers ( P 〈 0.05 ), and supplementing 300 mg/kg or 600mg/kg antimicrobial peptides significantly decreased feed -gain ratio(F/G) of21d AA broilers( P 〈 0.05 ). There was no difference in thymus index and spleen index of 21d AA broilers between control group and antimicrobial peptides treated groups ( P 〉 0.05 ). However, supplementing 600 mg/kg antimicrobial peptides significantly increased bursa of fabricius index of 21d AA broilers (P 〈 0.05 ). Supplementing antimicrobial peptides had no significant effect in IgM content, lysozyme and albumin level of21d AA broilers (P 〉 0.05). But, supplementing 600 mg/kg antimicrobial peptides significantly increased IgG level of 21d AA broilers (P 〈0.05). The results indicated that the antimicrobial could improve the growth performance and immune function of broilers.
出处
《中国饲料添加剂》
2011年第11期31-34,共4页
China Feed Additive
关键词
抗菌肽
肉仔鸡
生产性能
免疫功能
antimicrobial peptide
broiler
growth performance
immune function