2015～2016年我国东北地区猪病毒性腹泻流行病学调查

发布时间：2018-01-25 07:25

本文关键词： 猪传染性胃肠炎病毒猪流行性腹泻病毒猪轮状病毒猪病毒性腹泻流行病学调查　出处：《中国预防兽医学报》2017年05期 　论文类型：期刊论文

【摘要】：为了解东北地区(黑龙江省、吉林省和辽宁省)的猪病毒性腹泻发病情况和流行特点,本研究对2015年~2016年间东北地区的88个疑似病毒性腹泻猪场进行临床症状、发病猪日龄、发病时间、发病率、病死率等基本情况调查,并采用RT-PCR和抗原快速检测试剂盒对送检疑似病毒性腹泻仔猪粪便或肠道内容物264份样品进行病原检测。调查结果显示,疫情多发生在冬春寒冷季节。发病初期,后备猪、母猪或育肥猪呈一过性腹泻,发病率一般在1%以下,腹泻主要发生于哺乳仔猪,发病率高达87.97%,病死率高达89.90%。3个省份的7日龄以内仔猪发病率分别为62.52%、79.73%和75.00%,病死率为84.91%、80.87%和80.25%。随着日龄的增加,仔猪的发病率和死亡率呈明显递减趋势。病原学检测结果显示,传染性胃肠炎病病毒(TGEV)的阳性率为6.06%(16/264),猪流行性腹泻病毒(PEDV)的阳性率为74.62%(197/264),猪轮状病病毒(PoRV)的阳性率为25.76%。其中,单一病原感染以PEDV最高,感染率为48.86%,Po RV感染率为1.52%,TGEV感染率为0.38%。存在TGEV/PEDV、TGEV/PoRV、PEDV/PoRV混合感染和PEDV/TGEV/PoRV的3重感染,以PEDV/Po RV的双重感染为主。结果表明,东北三省份的猪病毒性腹泻发病率和死亡率均较高,主要病原以PEDV为主。该调查结果为东北地区养殖场猪病毒性腹泻的综合防控提供流行病学数据。
[Abstract]:To understand the incidence and epidemic characteristics of porcine viral diarrhea in Northeast China (Heilongjiang Province, Jilin Province and Liaoning Province). This study investigated the clinical symptoms, onset age, onset time, morbidity and mortality of 88 suspected viral diarrhea farms in Northeast China from 2015 to 2016. RT-PCR and antigen rapid detection kit were used to detect the pathogens of 264 samples of feces or intestinal contents of piglets suspected of viral diarrhea. The epidemic occurred in cold season in winter and spring. In the early stage of the disease, the backup pigs, sows or fattening pigs showed transient diarrhea, the incidence of which was generally below 1%, and diarrhea mainly occurred in suckling piglets, the incidence of which was as high as 87.97%. The mortality of piglets within 7 days of age was 62.52% and 75.00%, respectively, and the mortality was 84.91%. With the increase of age, the morbidity and mortality of piglets decreased significantly. The results of etiological examination showed that the morbidity and mortality of piglets decreased significantly with the increase of age. The positive rates of infectious gastroenteritis virus (TGEV) and porcine epidemic diarrhea virus (PEDVV) were 6.06 / 264 and 74.62 / 264 respectively. The positive rate of porcine rotavirus was 25.76.The infection rate of PEDV was the highest and the infection rate was 48.86%. The RV infection rate of porcine rotavirus was 1.52%. The infection rate of TGEV was 0.38. There were TGEV / PEDVV / TGEV / PoRV / PEDVP / PoRV mixed infection and PEDV/TGEV/PoRV triple infection. The results showed that the morbidity and mortality of porcine viral diarrhea were higher in the three provinces of Northeast China. The main pathogen was PEDV. The results provided epidemiological data for comprehensive prevention and control of porcine viral diarrhea in livestock farms in Northeast China.
【作者单位】：中国农业大学生物学院;哈尔滨维科生物技术开发公司;
【分类号】：S858.28
【正文快照】： 猪病毒性腹泻病是猪的一类重要传染性疾病,也是猪场一种常见病,尤其以仔猪腹泻最为严重,给养猪业造成了严重的经济损失[1-4]。引起猪病毒性腹泻病的病原主要是猪传染性胃肠炎病毒(TGEV)、猪流行性腹泻病毒(PEDV)和猪轮状病毒(Po RV)3种,常以单独或混合感染的方式感染猪,发病急

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