【摘要】 采用新城疫(ND)、克隆＿30株,传染性法氏囊病(IBD)CT株的含毒鸡胚胚体和尿囊液研制成二联活疫苗。用10个免疫剂量ND、IBD二联活疫苗免疫7～10日龄雏鸡,不引起ND和IBD临床症状,说明该苗安全可靠。ND、IBD二联活疫苗与ND、IBD单苗免疫对比试验,测定血清抗体结果,无显著差异,接种7～10日龄鸡,7天产生免疫力,14～21天达到高峰,一次免疫,免疫期2个月,保护率95%以上,从而能产生注射一次疫苗起到一针同时能防两种传染病,减少运输成本和应激的效果。现地应用已逾2亿羽份,获得良好的效果。更多还原

【Abstract】 ND-IBD attenuated vaccine is made from embryo and allantoic fluid with ND、clone-30 strain, and CT strain of IBD.15-day old chickens were vaccinated with 10-time immunized dose, ND and IBD symptoms have not been seen. Immune efficiency of ND-IBD vaccine also was proved almost the same as single vaccine by comparison experiment . 7～10 day old chickens were vaccinated , the antibody responses could be detected at 7 days post ( inoculation pi ), and reached its peaks at 14～21days pi .Immune time is two months by every immunity, the protective rate was more than 95 %.更多还原