酒泉市猪繁殖与呼吸综合征的流行病学监测和分析

Epidemiological Surveillance and Analysis of Porcine Reproductive and Respiratory Syndrome in Jiuquan

摘要:

为掌握酒泉市猪繁殖与呼吸综合征（PRRS）的流行情况，本试验在酒泉市五个农业县市采集638份样品，采用反转录-聚合酶链式反应(荧光RT-PCR)方法进行核酸检测，对不同地域、不同生长期、不同饲养模式的流行情况进行分析。结果显示，638份样品共检测出PRRS核酸阳性样品29份，PRRS阳性感染率为4.55%。不同地域PRRS阳性感染率介于0-7.95%；屠宰场、规模场、散养户PRRS阳性感染率分别为0、2.96、6.82%；种公猪、育肥猪、仔猪、母猪PRRS阳性感染率分别为0、3.1、5.38、6.36%。结果表明，酒泉市PRRS呈散发流行，规模养殖场标准化高，饲养管理模式先进PRRS阳性感染率低，此病仔猪和母猪更容易感染，本试验将对我市PRRS综合防控提供技术支撑。

Abstract:

This study aims to understand the prevalence of porcine reproductive and respiratory syndrome (PRRS) in Jiuquan City. This experiment collected 638 samples from five agricultural counties and cities in Jiuquan City, and used reverse transcriptionpolymerase chain reaction (fluorescence RTPCR) method for nucleic acid detection. We analyze the prevalence in different regions, different growth periods, and different feeding modes. The results showed that a total of 29 PRRS nucleic acid positive samples were detected among 638 samples, and the PRRS positive infection rate was 4.55%. The PRRS positive infection rate in different regions ranges from 0-7.95%. The PRRS positive infection rates in slaughterhouses, largescale farms, and freerange households were 0, 2.96, and 6.82% respectively. The PRRS positive infection rates of breeding boars, fattening pigs, piglets, and sows were 0, 3.1, 5.38, and 6.36% respectively. The results showed that PRRS was sporadic in Jiuquan City. Largescale farms are highly standardized and have advanced feeding and management models with low PRRS positive infection rates. Piglets and sows are more susceptible to this disease. This test will provide technical support for the comprehensive prevention and control of PRRS in our city.