作 者：
邢焕;孙春阳;栾素军;萨仁娜;张宏福;丁美芳
单 位：
中国农业科学院畜牧兽医研究所;北京市饲料监察所
关键词：
葡萄糖氧化酶;酵母硒;免疫器官指数;血清蛋白;肉鸡
摘 要：
本文旨在研究以葡萄糖氧化酶和酵母硒为主要成分的混合添加剂,在规模化养殖条件下,对肉鸡生产性能、免疫器官指数和血清蛋白指标的影响。将5 000只1日龄爱拔益加(AA)肉鸡,随机分为2个组,分别为对照组和试验组,每个组设4个重复,每个重复625只鸡。对照组饲喂玉米-豆粕基础饲粮,试验组饲喂基础饲粮+0.2%混合添加剂(葡萄糖氧化酶和酵母硒)。试验期为42 d。结果表明,1)生产性能:在肉鸡不同日龄阶段(1~21日龄、22~42日龄和1~42日龄),试验组的平均日采食量(ADFI)、平均日增重(ADG)均显著高于对照组(P<0.05),ADFI分别提高了2.58%、1.55%和1.83%,ADG分别提高了1.67%、6.93%和6.66%;试验组料重比(F/G)显著低于对照组(P<0.05),分别降低了3.36%、5.13%和4.44%。在肉鸡生长全期(1~42日龄),试验组肉鸡死亡率显著低于对照组(P<0.05)。2)屠宰性能:21日龄试验组肉鸡屠宰率、全净膛率、半净膛率显著高于对照组(P<0.05),分别提高2.35%、4.11%和3.23%,42日龄肉鸡屠宰指标在试验组与对照组之间无显著差异(P>0.05)。3)免疫器官指数:21日龄时,试验组肉鸡法氏囊指数显著高于对照组(P<0.05),脾脏指数和胸腺指数在2组之间无显著差异(P>0.05);42日龄时,试验组肉鸡胸腺指数显著高于对照组(P<0.05),脾脏指数和法氏囊指数略有提高(P>0.05)。4)血清指标:21日龄时,试验组肉鸡血清总蛋白含量显著高于对照组(P<0.05);42日龄时,试验组肉鸡血清球蛋白含量显著高于对照组(P<0.05)。在肉鸡21、42日龄时,试验组血清尿素氮含量显著低于对照组(P<0.05)。综上,肉鸡饲粮使用含葡萄糖氧化酶和酵母硒的混合添加剂,能够提高肉鸡生产性能,降低死亡率,提高免疫器官指数和降低血清尿素氮含量。
译 名：
Effects of Compound Additives with Glucose Oxidase and Selenium Yeast on Performance and Immune Indexes in Broilers
作 者：
XING Huan;SUN Chunyang;LUAN Sujun;SA Renna;ZHANG Hongfu;DING Meifang;State Key Laboratory of Animal Nutrition,Institute of Animal Science,Chinese Academy of Agricultural Science;Institute of Feed Control of Beijing;
关键词：
glucose oxidase enzyme;;selenium yeast;;immune organ index;;serum proteins;;broilers
摘 要：
The experiment was conducted to investigate the effects of compound additives including glucose oxidase enzyme(GOD) and yeast selenium on performance,immune organ indexes and serum protein indexes of broilers in large-scale farming conditions.A total of 5 000 one-day-old Arbor Acres(AA) broilers were randomly allotted to two groups(control group and experimental group).Each group contained 4 replicates with 625 broilers per replicate.In control group,the broilers were fed a corn-soybean basal diet,while in experimental group,broilers were fed the basal diet with 0.2% compound additives which contained GOD and yeast selenium.The experiment lasted for 42 days.The results showed that,1) performance: compared with control group,the average daily feed intake(ADFI),average daily gain(ADG) of experimental group were significantly higher(P < 0.05).ADFI increased by 2.58%,1.55% and 1.83%,and ADG increased by 1.67%,6.93% and 6.66% at 1 to 21 days of age,22 to 42 days of age and 1 to 42 days of age of broilers,respectively.The feed /gain(F/G) of experimental group was significantly lower than that in control group(P < 0.05),reduced by 3.36%,5.13% and 4.44%,respectively.The mortality of experimental group significantly reduced at 1 to 42 days of age(P < 0.05).2) Slaughter performance: at the age of 21 days,the slaughter rate,eviscerated rate,seml-eviscerated rate of experimental group were 2.35%,4.11% and 3.23% higher than those in control group(P < 0.05).There was no significant difference in slaughter performance at 42 days of age between 2 groups(P> 0.05).3) Immune organs indexes: the bursal index of experimental group was significantly increased at 21 days of age(P < 0.05).There were no significant differences in spleen and thymus index between experimental and control groups(P > 0.05).At the age of 42 days,compared with the control group,the thymus index of experimental group was significantly higher(P < 0.05),and spleen index and bursal index were a little higher in experimental group than those in control group(P > 0.05).4) Serum index : total protein content in serum of experimental group was significantly higher than that in control group at the age of 21 days of broilers(P < 0.05),and globulin content in serum was significantly higher at 42 days of age(P < 0.05).The urea nitrogen content in serum of experimental group was significantly lower than that in control group at the age of 21 and 42days(P < 0.05).In conclusion,the compound additives with glucose oxidase enzyme and yeast selenium can improve the performance,reduce mortality,increase index of immune organs,and decrease serum urea nitrogen content of broilers.
