仔猪猪瘟疫苗乳前免疫技术的应用研究

目前在对猪瘟的防治实践中，对猪瘟超前免疫后四窝抗体水平的变化以及保护效果存在争议。通过本厂的应用观察：以品种、日龄相同，胎次相近的杜长大四窝三元仔猪为检测对象，每窝随机抽取五头进行超前免疫实验，分别在20日龄，30日龄，40日龄，60日龄，静脉采血，利用IDEXX公司的猪瘟检测试剂盒进行猪瘟阻断率检测，结果表明进行猪瘟超前免疫后再在50日龄加强一次猪瘟疫苗免疫能很好的保护仔猪

Study on pre-immunity technology application of hog cholera vaccine on piglet

At present in practice of hog cholera preventing and controlling ,the effect of ultra pre-immunity to antibody level change and protection still existence dispute in the four latter nest piglets.Four nests Duroc×Landrace×Large White piglets with similar breed ,age and fetus frequency were selected ,five piglets of each nest were used to test ultra pre—immunity and pick venous blood in the age of 20,30,40,and 60 days , hog cholera detection kit of IDEXX company were also used to detect blocking rate of hog cholera.The result showed that after ultra pre—immunity , strengthen another hog cholera vaccine in the age of 50 days can perform a good protection to piglets.