川射干提取物对肉鸡育雏期生长性能及免疫功能的影响  

Effects of iridis tectori rhizoma extract on growth performance andimmune function of broiler chicks during brooding period

作　　者：张敏[1,2] 李思聪 王斌[1,2] 杨子仪 李旭廷[1,2] 梁歌 ZHANG Min;LI Sicong;WANG Bin;YANG Ziyi;LI Xuting;LIANG Ge(Sichuan Animal Science Academy,Chengdu 610066,China;Animal Breeding and Genetics Key Laboratory of Sichuan Province,Chengdu 610066,China)

机构地区：[1]四川省畜牧科学研究院,四川成都610066 [2]动物遗传育种四川省重点实验室,四川成都610066

出　　处：《畜禽业》2024年第5期1-5,共5页Livestock and Poultry Industry

基　　金：四川省基本科研业务项目(SASA202104);国家现代农业产业技术体系四川省兽药创新团队项目(SCCXTD-2020-18);四川省省级科研院所成果转化畜禽新型中兽药产业化关键技术转化应用项目(2022JDZH0028);四川省财政运行专项畜禽重大疫病防控技术研究与示范项目(SASA2024CZYX006)。

摘　　要：目的研究川射干(Iridis Tectori Rhizoma,ITR)提取物对肉鸡育雏期生长性能和免疫功能的影响。方法试验选择200只1日龄雏鸡,随机分为4组,每组5个重复,每个重复10只,分别为空白对照组(基础日粮)Ⅰ组以及试验药物组Ⅱ组、Ⅲ组、Ⅳ组(基础日粮分别添加0.25%、0.5%、1.0%ITR)。试验期42 d。每2周测定1次料肉比、测算平均日采食量、平均日增重等生长性能指标和免疫器官指数、新城疫抗体水平等免疫功能指标。结果1~42日龄,与Ⅰ组相比,Ⅱ组试验鸡的平均日增重显著提高,3组试验组的鸡平均日增重差异不显著(p>0.05);试验期各阶段平均日采食量和料肉比各组差异均不显著(p>0.05),但随着试验组药物添加浓度的增加,平均日采食量、平均日增重呈下降趋势,料肉比呈上升趋势。与Ⅰ组相比,各试验组的胸腺器官指数差异均不显著(p>0.05);在28日龄时,与Ⅰ组相比,Ⅳ组的脾脏器官指数显著升高(p<0.05),其他日龄差异不显著(p>0.05);28日龄时Ⅱ组、Ⅲ组和Ⅳ组的法氏囊器官指数显著高于Ⅰ组(空白对照)(p<0.05),其他日龄各组差异不显著(p>0.05)。试验期各阶段,各组间新城疫抗体水平差异不显著(p>0.05);鸡新城疫抗体水平与时间呈负相关,试验组对鸡新城疫抗体水平的降低均有一定的抵抗作用,42日龄,试验组抗体水平均高于对照组。结论在饲料中添加ITR作为免疫调节剂可改善肉鸡免疫功能和生长性能,其中0.25%添加量对提高雏鸡生长性能效果最好,1%添加量对雏鸡脾脏指数的提高效果最明显。The aim of the experiment was to study the effect of Iridis Tectori Rhizoma(ITR)extract on the growth performance and immune function of broiler chicks during the brooding period.Two hundred chickens,one day old,were randomly divided into four groups,with five replicates per group and ten broilers per replicate.These groups were:groupⅠ(blank control,basal diet),and groupsⅡ,Ⅲ,andⅣ(basal diet supplement with 0.25%,0.5%,and 1.0%ITR)of the experimental drug group,for a period of 42 days.Feed conversion ratio(FCR),average daily feed intake(ADFI),average daily gain(ADG),and other growth performance indicators,as well as immune function indicators such as immune organ index and Newcastle Disease antibody level,were measured once every two weeks.The results showed that from 1 to 42 days of age,compared with groupⅠ,groupⅡsignificantly increased the ADG from 1 to 42 days of age;the differences between groups in ADFI,ADG,and FCR were not significant at all stage of the test period(p>0.05),but as the concentration of the drug added to the test group increased,the ADFI,ADG showed a decreasing trend,while FCR showed an increasing trend.Compared with group I,the differences in thymic organ index were not significant(p>0.05)in all groups at all days of age.At 28 days of age,the spleen organ index was significantly higher(p<0.05)in groupⅣcompared to groupⅠ,while the differences were not significant(p>0.05)at other days of age.At 28 days of age,groupⅡ,groupⅢ,and groupⅣhad significantly higher(p<0.05)fasciola organ index than groupⅠ,while the differences between the groups at other days of age were not significant(p>0.05).At all stages of the experimental period,the differences in the antibody levels of Newcastle disease were not significant,the antibody levels of Newcastle disease in chickens were negatively correlated with the time,and all dosage groups of ITR had a certain resistance to the reduction of the antibody levels of Newcastle disease in chickens,and at the age of 42 days,the antibody levels in t

关 键 词：川射干提取物 肉鸡 育雏期 生长性能 免疫功能 

分 类 号：S831.5[农业科学—畜牧学]