抗菌脂肽对肉鸡生产性能和免疫机能的影响  

Effect of Antimicrobial Lipopeptide on Production Performance and Immunity in Broilers

作　　者：都海明[1] 戚广州[1] 王建军[1] 张旭晖[1] 陆兆新[2] 王恬[1] 

机构地区：[1]南京农业大学动物科技学院,江苏南京210095 [2]南京农业大学食品科技学院,江苏南京210095

出　　处：《江苏农业学报》2010年第5期1009-1014,共6页Jiangsu Journal of Agricultural Sciences

基　　金：江苏省高技术研究(农业)项目(BG2007335)

摘　　要：选用1日龄健康AA肉鸡600羽,随机分为5组:对照组(C组,不含抗菌脂肽及抗生素)、抗生素对照组(AC组)及在基础日粮中分别添加4 000 U/kg、8 000 U/kg和12 000 U/kg抗菌脂肽组(试验Ⅰ、Ⅱ和Ⅲ组),试验期为45 d。结果表明,Ⅰ组平均日增重较AC组提高3.77%(P<0.05),饲喂21 d法氏囊指数和45 d胸腺指数较C组分别提高41.48%(P<0.05)和69.91%(P<0.01)。Ⅱ组21 d甲状腺素水平较C组降低29.31%(P<0.05),45 d促甲状腺激素水平较C组提高72.2%(P<0.05)。Ⅰ组45 d三碘甲状腺氨酸水平较AC组提高66.67%(P<0.05),21 d总蛋白水平均显著高于其他各组(P<0.05),21 d及45 d血清球蛋白水平较C组也有极显著提高。以上结果表明,添加4 000 U/kg抗菌脂肽对肉鸡的生长发育和免疫机能具有较好的调节和促进作用。To study the effect of antimicrobial lipopeptide on production performance and immunity of broilers,600 1-day-old AA broilers were randomly divided into 5 groups,fed with the following diets for 45 d： basal diets（C）,basal diet ＋ antibiotics（AC）,basal diet ＋ 4 000 U/kg antimicrobial lipopeptide（Ⅰ）,basal diet ＋ 8 000 U/kg antimicrobial lipopeptide（Ⅱ）,and basal diet ＋ 12 000 U/kg antimicrobial lipopeptide（Ⅲ）.The results showed that in group I,the average daily weight gain increased by 3.77%（P〈0.05） compared with group AC,and the indexes of bursa of fabricius at 21 d and thymus at 45 d increased by 41.48%（P〈0.05） and 69.91%（P〈0.01） compared with group C,respectively.In group Ⅱ,the level of thyroxine T4 in serum decreased by 29.31%（P〈0.05） at 21 d,and thyroid stimulating hormone increased by 72.2%（P〈0.05） at 45 d,compared with group C.In group I,the level of triiodothyronine T3 in serum increased by 66.67%（P〈0.05） at 45 d compared with group AC,total protein level was significantly higher than those in other groups（P〈0.05） at 21 d,and globulin level was significantly higher than those in group C at 21 d and 45 d（P〈0.01）.It indicated 4 000 U/kg antimicrobial lipopeptide added in diet could improve production performance and immunity of broilers.

关 键 词：抗菌脂肽 肉鸡 生产性能 免疫机能 

分 类 号：S831.5[农业科学—畜牧学]