规模化猪场猪圆环病毒2型的血清流行病学调查

发布时间：2019-05-31 17:19

【摘要】：为了解规模化猪场猪圆环病毒2型(PCV2)血清学流行情况,采用ELISA进行PCV2抗体检测。结果表明,运城地区规模化猪场广泛存在PCV2感染,未免疫接种猪圆环病毒疫苗的外观健康猪血清样品中PCV2抗体平均阳性率为49.66%,其中种猪感染率达67%,哺乳仔猪感染率4.55%,保育猪感染率43%,育肥猪感染率64.71%;外观健康猪群检测结果提示,随着年龄的增长PCV2感染有升高趋势。为了进一步研究猪圆环病毒感染各症候群在规模化场发病特点及流行规律,采集临床疑似断奶仔猪多系统衰竭综合征(PMWS)、仔猪先天性震颤(Congenital tremors,CT)、猪肾炎皮炎综合征(PDNS)、猪的繁殖障碍(Reproductive failure)、PCV2相关性肺炎等症状猪血清400份进行PCV2抗体检测。检测结果显示,疑似PMWS症状PCV2抗体阳性率最高,达86.25%,然后依次是疑似PCV2相关性肺炎阳性率56.25%,疑似PDNS阳性率46.25%,疑似繁殖障碍阳性率26.25%,最低的是疑似CT阳性率11.25%。研究结果表明,运城地区规模化猪场PCV2感染以PMWS和PCV2相关性肺炎为主,其次是PDNS和繁殖障碍,仔猪先天性震颤感染率最低。
[Abstract]:In order to understand the serological prevalence of swine circovirus type 2 (PCV2) in large-scale pig farms, PCV2 antibody was detected by ELISA. The results showed that PCV2 infection was widespread in large-scale pig farms in Yuncheng area. The average positive rate of PCV2 antibody in serum samples of healthy pigs without immunization with pig circovirus vaccine was 49.66%, and the infection rate of breeding pigs was 67%. The infection rate of suckling piglets, conservation pigs and fattening pigs was 4.55%, 43% and 64.71% respectively. The results of healthy pigs showed that PCV2 infection tended to increase with the increase of age. In order to further study the characteristics and epidemic regularity of swine circovirus infection in scale field, congenital tremor (Congenital tremors,CT) of (PMWS), piglets with suspected multisystem failure syndrome in weanling piglets was collected. The reproductive disorder of (PDNS), pigs with (Reproductive failure), PCV2 associated pneumonia was detected for PCV2 antibody in 400 pigs with symptoms such as PCV2 associated pneumonia. The results showed that the positive rate of PCV2 antibody in suspected PMWS symptoms was the highest (86.25%), followed by the positive rate of suspected PCV2-associated pneumonia (56.25%), suspected PDNS (46.25%) and suspected reproductive disorder (26.25%). The lowest positive rate of suspected CT was 11.25%. The results showed that PMWS and PCV2 associated pneumonia were the main PCV2 infections in large-scale pig farms in Yuncheng area, followed by PDNS and reproductive disorders, and the infection rate of congenital tremor in piglets was the lowest.
【作者单位】：陕西省渭南市临渭区动物疾病控制中心;
【分类号】：S858.28

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