摘要
为研究中草药微生态制剂替代抗生素对黄羽肉鸡生产性能、免疫机能及脏器组织的影响,试验选用500羽黄羽肉鸡混合雏,随机分为5组,A组饲喂基础日粮,B组饲喂基础日粮+饲用抗生素(含50 g/t金霉素+40 g/t杆菌肽锌),C组饲喂基础日粮+中草药(5 kg/t)、D组饲喂基础日粮+微生态制剂(0.1 kg/t),E组饲喂基础日粮+中草药微生态制剂(5.1 kg/t),每组10个重复,每个重复10羽,试验期50 d。结果表明:与抗生素组相比,中草药微生态制剂组日增重显著提高了8.2%(P<0.05),耗料增重比显著降低了6.0%(P<0.05),成活率(98.5%)提高了2.4%;中草药微生态制剂组的胸腺指数、脾脏指数、法氏囊指数等均显著高于抗生素组(P<0.05),但与单纯的中草药组、微生态制剂组差异不显著(P>0.05);中草药微生态制剂组提高了禽流感疫苗的抗体滴度和整齐度,并且促进肠道、肝脏、肾脏等脏器组织的健康发育。结果显示,中草药微生态制剂可以显著提高黄羽肉鸡生产性能,增强机体免疫功能和健康水平,提高成活率,可以替代抗生素用于黄羽肉鸡养殖。
The present study was aimed to study the effects of applying composite herbal-probiotics agents in the feed on growth performance, immune function and organs tissue development in Yellow-feathered broilers. Five hundred Yellow-feathered broilers at 10-day-old were divided into 5 groups. Group A was fed a basal diet, group B was fed the basal diet＋50 g/t aureomycin and 40 g/t bacitracin zinc, group C was fed the basal diet＋5 kg/t composite herbal agents, group D was fed the basal diet＋0.1 kg/t probiotics agents and group E was fed the basal diet＋5.1 kg/t composite herbalprobiotics agents. Each group included 10 replicates（10 birds per replicates）, and the experiment lasted 50 days. Results showed that group E got the best experimental results of all groups, ADG was increased by 8.2%（P〈0.05）, the feed-gain ratio was decreased by 6.0%（P〈0.05）, and survival rate increased by 2.4% compared with the antibiotic group B. Group E also got significantly increased immune organ indexes and antibody titer of Avian influenza vaccine（P〈0.05）, and enhance development of the duodenum, liver and kidney. In conclusion, the results suggest that the composite herbal-probiotics additives can improve growth performance, increase health degree, immunity and survival rate of Yellow-feathered broilers, and has the potential to replace antibiotics for broiler breeding.
出处
《中国畜牧杂志》
CAS
北大核心
2017年第11期90-95,共6页
Chinese Journal of Animal Science
基金
广州市博士后科研启动项目(项目代码230.30)
关键词
中草药微生态制剂
黄羽肉鸡
生产性能
免疫机能
脏器组织
Composite herbal-probiotics agents
Yellow-feathered broilers
Growth performance
Immune function
Organ and tissue
