摘要
本试验分别用D78苗、B87苗,CA+CF+B87三价苗,法氏囊组织灭活油苗等4种疫苗免疫鸡群,然后分别用CL、SQ、QZ等3个本地分离毒株进行攻毒,测定每种疫苗对各毒株攻毒鸡群的保护指数。结果显示,4种疫苗对CL、SQ、QZ等3个毒株攻毒鸡群的保护指数分别为: 组织灭活油苗100％、100％、100％,CA+CF+B87三价苗85％、94．7％、53．3％,D78苗30％、68．4％和 46．7％,B87苗35％、73．7％和40％。
The experiment used D78, B87, CA+CF+B87 and bursa tissue oil-inactivated vaccines to inoculated chicks. The challenge viruses came from CL, SQ and QZ isolates respectively. The protective indexes of four vaccines:tissues oil-inactivated vaccine were, 100%, 100%;CA+CF+B87 were 85%,94.7%,53.3%;D78were30%,68.4%,46.7%;B87 were 35%, 73.7% and 40%, respectively.
出处
《中国家禽》
北大核心
2005年第z1期156-157,共2页
China Poultry
关键词
疫苗
免疫
攻毒
保护指数
vaccine
immunity
challenge
protective index
