福建龙岩规模化猪场BVDV感染的血清学调查

Serological Investigation of Bovine Viral Diarrhea Virus Infection in Some Large-scale Pig Farms in Longyan

为了解闽西地区规模化猪场牛病毒性腹泻病毒(BVDV)流行情况,应用酶联免疫吸附试验(ELISA)对闽西地区18个猪场送检猪血清进行BVDV感染的血清学调查,同时检测这些猪血清的猪瘟抗体,结果表明:规模化猪场BVDV的感染比较严重,血清阳性率为28.6%,猪场阳性率达到94.4%。种猪、育肥猪、保育猪、哺乳仔猪的BVDV的血清阳性率分别为38.5%、17.3%、2.1%、27.4%,种猪的阳性率明显高于生长猪。BVDV抗体与猪瘟抗体的相关性分析结果表明在猪瘟抗体阳性猪群中的BVDV感染率较高,某些猪瘟抗体阴性猪群中也发现BVDV感染的现象。

To survey the prevalence of bovine viral diarrhea virus （BVDV） on large-scale pig farms in western Fujian Province, the serological investigation of BVDV Infection was made by ELISA in 18 large-scale pig farms in western Fujian Province. At the same time, Classical swine fever （CSF） antibodies in the swine serum was also detected. The results showed that the BVDV infection was more serious in large-scale pig farms, where antibody positive rate of sera for detecting BVDV was 28.6% and pig farm positive rate of BVDV was 94.4%. The BVDV sera positive rate of boar, fattening pigs, nursery pigs and breast-feeding pigs were 38.5%, 17.3%, 2.1% and 27.4% respectively. Moreover, the positive rate of boar was significantly higher than in growing pigs. The results of BVDV antibodies to CSF antibodies correlation analysis showed that BVDV infection rate was higher in the CSF antibody-positive pigs. The phenomenon of BVDV infection was also found in some CSF antibody-negative pigs.