摘要
本文综述了猪瘟兔化弱毒疫苗接种后,仍有猪出现“温和型猪瘟”的原因和预防措施。猪瘟免疫失败是由于猪瘟病毒的胎盘感染、进而导致持续感染,然后产生了繁殖障碍,以及母源抗体干扰而致免疫程序混乱。持续感染是当前发生猪瘟的重要病理机制。为了根除猪瘟,必须加强免疫监测,加强兽医法规的实施。建议对新生仔猪可采取吸初乳后6小时内接种,或20—25日龄首免并加大免疫剂量为4头剂,65日龄(或75日龄)第二次免疫。
In this paper the writer has reviewel the cause and the prevention of“mild hog cholera”which oooured after the pigs had been vaccinated with lapinized hog cholera attenuted vaccine.The failure of hog cholera immunization was due to the infection of hog cholera virus through placenta,followed by per- sistent infection,reproductive obstacle,at last the disorder of immunization process occured,that was caused by the interference of maternal antibody. The persistent infection is pointed to be the vital pathogeesis of hog cho- lera occurr ng at present.It is imgerative for the eradication of hog cholera that immune monitor is stressed,veterinary act is carded out conscientiously. The writer suggest that va(?)cinate new born pigs within 6 hr of their sucking colostrum,or with 4 doses of vaccine at 20—25 days of age,and again at 65(or 75)days old.
出处
《湖北农学院学报》
1990年第2期43-48,共6页
Journal of Hubei Agricultural College
关键词
猪瘟
持续感染
胎盘感染
免疫程序
log(h)lera
persistut infection
placental infection
immunization process
