日粮中添加大青叶提取物对雏鸡生长性能、抗氧化功能和免疫功能的影响  

Effects of adding extracts from Folium Isatidis to the diet on growth performance,antioxidation function and immune function of chicks

作　　者：阳刚[1] 杨仕群[1] 吴强 陈兴颖 YANG Gang;YANG Shiqun;WU Qiang;CHEN Xingying(Yibin Vocational and Technical College,Yibin 644003,China)

机构地区：[1]宜宾职业技术学院,四川宜宾644003

出　　处：《黑龙江畜牧兽医》2022年第10期104-108,共5页Heilongjiang Animal Science And veterinary Medicine

基　　金：宜宾职业技术学院院级科研项目(ybzysc20-20)。

摘　　要：为研究日粮中添加大青叶提取物对雏鸡生长性能、抗氧化功能和免疫功能的影响,试验选择240只1日龄健康雏鸡,随机均分为4组,分别为对照组、低剂量组、中剂量组和高剂量组,每组4个重复,每个重复15只,对照组仅饲喂基础日粮,低剂量组、中剂量组、高剂量组分别饲喂在基础日粮中添加30 mg/kg、40 mg/kg、50 mg/kg大青叶提取物的试验日粮,预试期7 d,正试期21 d;测定各组的生长性能(平均体重、平均日增重、平均日采食量和料重比)、抗氧化功能[血清总抗氧化能力(TAOC)、总超氧化物岐化酶(T-SOD)、谷胱甘肽过氧化物酶(GSH-Px)活性及丙二醛(MDA)含量]和免疫功能[免疫器官指数和血清IgA、IgG、补体3(C3)、补体4(C4)含量]。结果表明:各组间不同时间(段)的平均体重和平均日增重均差异不显著(P>0.05);低、中、高剂量组在第1~7天和第1~21天的平均日采食量均显著低于对照组(P<0.05);低、中、高剂量组在第1~7天的料重比均显著低于对照组(P<0.05),在第1~21天的料重比略低于对照组(P>0.05)。低、高剂量组血清T-AOC显著高于对照组(P<0.05),略高于中剂量组(P>0.05);高剂量组血清T-SOD活性显著高于对照组(P<0.05),与低、中剂量组差异不显著(P>0.05);高剂量组血清GSH-Px活性显著高于其他三组(P<0.05);各组间血清MDA含量均差异不显著(P>0.05)。各组间的脾脏指数和法氏囊指数均差异不显著(P>0.05),但脾脏指数和法氏囊指数平均值均随着大青叶提取物添加量的增加而增加。低、中、高剂量组胸腺指数均显著高于对照组(P<0.05),且以高剂量组为最高。高剂量组血清IgA含量略高于中剂量组(P>0.05),但显著高于低剂量组和对照组(P<0.05);高剂量组血清IgG含量显著高于其他3组(P<0.05);高剂量组血清C3含量略高于中剂量组(P>0.05),且显著高于低剂量组和对照组(P<0.05);各组间血清C4含量均差异不显著(P>0.05)。说明在雏鸡日�The purpose of this study was to explore the effects of adding extracts from Folium Isatidis to the diet on growth performance,antioxi⁃dation function and immune function of chicks.A total of 2401-day-old healthy chicks were randomly divided into 4 groups:blank control group,low dose group,medium dose group and high dose group.There were 4 replicates in each group and 15 chicks in each replicate.The chicks in the blank control group was fed a basic diet,and the chicks in the low-dose group,middle-dose group and high-dose group were fed the experimental diet supplemented with 30 mg/kg,40 mg/kg and 50 mg/kg of the extract from Folium Isatidis.The pre-trial period lasted for 7 days,and the trial period lasted for 21 days.The growth performance(average body weight,average daily gain,average daily feed intake and feed gain ratio),antioxidant function(serum T-AOC,T-SOD and GSH-Px activities and MDA content)and immune function(immune organ index and serum IgA,IgG,complement 3[C3],complement 4[C4])were measured.The results showed that there was no significant differ⁃ence in average body weight and average daily gain at different time points(periods)among the three groups(P>0.05),but the average daily feed intake in the low,middle and high dose groups was significantly lower than that in the control group on the 1st to 7th day and lst to 21st day(P<0.05).The feed gain ratio in the low,middle and high-dose groups was significantly lower than that in the control group on the 1st to 7th day(P<0.05),and the feed gain ratio in the low,middle and high dose-groups was slightly lower than that in the control group on the 1st to 21st day(P>0.05).The serum T-AOC in the low-dose group and high-dose group was significantly higher than that in the control group and middle-dose group(P>0.05).The activity of serum T-SOD in the high-dose group was significantly higher than that in the control group(P<0.05),but there was no significant difference between high-dose group and low and middle-dose groups(P>0.05).Serum GSH-Px activity in t

关 键 词：大青叶提取物 中草药添加剂 生长性能 抗氧化功能 免疫功能 

分 类 号：S816.6[农业科学—饲料科学]