【摘要】 牛病毒性腹泻、牛传染性鼻气管炎是牛的主要传染病,采用我所分离的地方毒株,以蜂胶为 免疫佐剂制成多价二联灭活苗,经免疫及攻毒试验、二联灭活苗保护率的中间试验等实验,表明该 苗对牛的保护性良好。更多还原

【Abstract】 Ox viral diarrhea and ox infectious nasal tracheitis are the major infectious diseases of ox, the polyvalent dyad inactivated vaccine has been made by adopting the local the virus strain separated by our institute and taking propolis as immunity adjuvant, after the immunity and virus attacking tests, and the middle-test of protective rate of the dyad inactivated vaccine, the vaccine has shown good protective quality to oxen.更多还原