1例自繁种猪场猪蓝耳病抗体监测与分析

Surveillance and Analysis of PRRS Antibodies in a Self-breeding Pig Farm

猪蓝耳病是由猪繁殖与呼吸道综合征病毒引起的传染性疾病,主要引起猪的呼吸困难、发烧、厌食以及母猪繁殖障碍等症状。为了解某规模化母猪场对猪蓝耳病疫苗的免疫情况,通过对广西梧州某自繁种猪场随机抽取产后母猪、配怀母猪、公猪、产房仔猪、保育舍仔猪、育肥猪共258份样本,采用酶联免疫吸附试验(ELISA)对样品蓝耳病抗体水平进行检测分析。结果显示,该猪场的平均阳性率为80%,S/P值为1.02,离散度为63%,整体水平良好。但在不同阶段的猪群中仍存在一定的差异,产后母猪、产房仔猪和育肥猪的阳性率及S/P平均值偏低、离散度偏高,未到达合格水平,存在一定的感染风险,需要进一步优化免疫程序,加强生物安全体系建设,提高整体免疫水平。

PRRS is an infectious disease caused by porcine reproductive and respiratory syndrome virus,which mainly causes dyspnea,fever,anorexia and reproductive disorders in pigs.To understand a large-scale sow farms of PRRS vaccine immunity,the author of Guangxi Wuzhou a breeding farms random postpartum sows,sows,boars,piglets,nursery piglets,a total of 258 samples,the enzyme-linked immunoadsorption test(ELISA)for samples of PRRS antibody level detection analysis.The results showed that the average positive rate was 80%,the S/P value was 1.02,the dispersion was 63%,and the overall level was good.However,there are still some differences in different stages of pigs.The positive rate and average S/P of postpartum sows,piglets and finishing pigs are low,do to reach the qualified level,and there is a certain risk of infection.It is necessary to further optimize the immune procedures,strengthen the construction of biosafety system,and improve the overall immune level.