摘要
禽霍乱克隆８９弱毒菌苗５×１０６个活菌对鸡即产生免疫，免疫剂量为１０×１０６个活菌，应用剂量为３０×１０６个活菌。应用剂量免疫后．用３０个强毒菌攻击，２４ｈ保护率８０％。免疫期１２５天，１００个以上强毒菌攻击，保护率６０％。
Immunity was stimulated in chickens vaccinated with 5×106 CFU bacteria of the attenuated strain Clone89 of pasteurella multicida. Vaccination and application doses were 10 ×106 and 30×106. CFU bacteria respectively. Eighty percent chickens vaccinated with application dose were protected when challenged by 30 live bacteria of virulent strain 24 hours postinoculation. Lasting immunity was generated 72 hours post-inoculation. When challenged by 100 live bacteria of virulent strain 125 days post-inoculation, 60 percent chickens were protected.
出处
《华北农学报》
CSCD
北大核心
1995年第1期124-127,共4页
Acta Agriculturae Boreali-Sinica
关键词
禽霍乱
克隆
菌苗
免疫
Fowl cholera
Clone89
Bacterine
Immunity
