摘要
河南地区２个外贸猪场于１９９３年６～１１月陆续发现初产和经产母猪发生流产、死胎和初生乳猪在短期内大批死亡的疫病．经流行病学调查，发病情况和病理变化观察．以及实验定诊断与防制效果的综合分析，确诊为繁殖障碍型猪瘟．对上述发病猪场，除按常规加强隔离和消毒处理外，采用了强化母猪抗体水平措施，对母猪在配种前２～３周，接种４头份猪瘟疫苗，同步加强饲养管理和停止使用药物添加饲料及其他疫苗的免疫接种，使产生坚强免疫力后再配种，以防止妊娠期感染．自此之后，生产母猪，未发生繁殖障碍，疫情得到控制．
Abstract In two pig farmsin Henan Province, abortion, death farrow and newly borned piglets' death were found. Depending on epidemical investigation, the disease was Hog cholera of breeding obstacle type according to Clinical signs,pathologjcal ecamination, Labotatory diagnosis and prevention curing effect.The pig farms were isolated and sterilized,female pigs were vaccinated with Hong cholera vaccine two or three weeks before fertilization to induce stable immrnity. At the same time,stopped using medicine mixed fed and other yaccination, strengthened rearing regulation to prevent infection during gestational perild. From then on,bteeding obstacle was not found in the female pigs in the pig farms.
