山东省猪腹泻病例中PEDV、TGEV和PRV的感染调查与分析

doi:10.16431/j.cnki.1671-7236.2017.07.037

Abstract

Abstract:

To understand porcine viral diarrhea prevalence in the large-scale pig farms of Shandong province, a total of 3 035 clinical samples were detected by PCR from January, 2014 to December, 2016.Those samples were detected for porcine epidemic diarrhea virus (PEDV), transmissible gastroenteritis virus (TGEV) and pseudorabies virus (PRV). The results showed that the detection rate of PEDV, PRV and TGEV were 67.49%, 9.33% and 3.29%, respectively.During the past three years, the lowest detection rate of PEDV was 48.15% in the fourth quarter of 2014,and the highest was 88.57% in the fourth quarter of 2015.In 2016,the detection rate represented fluctuate declining compared with 2015.The highest positive rate of TGEV was 18.52% in the fourth quarter of 2014,and in the third quarter of 2015 was 15.38%.The lowest positive rate of TGEV was 6.67% in the first quarter of 2016 and TGEV was not detected in the other quarters. The highest detection rate of RPV was 15.68% in the second quarter of 2016,and the lowest was 2.56% in the second quarter of 2014,except the first quarter of 2014 that the PRV was 0. By detecting three kinds of viruses in 69 clinical samples collected passively, the results showed that the detection rate of PEDV,TGEV and PRV were 86.96%,5.80% and 37.68%,respectively. The total single infection rate was 69.57%,the single infection rates of PEDV,TGEV and PRV were 57.97%,1.45% and 10.14%, respectively;The total mixed infection rate was 30.43%,the mixed infection rates of PEDV/PRV,PEDV/TGEV and TGEV/PRV were 26.09%,2.90% and 1.45%, respectively;Obviously, the total single infection rate was higher than the total mixed infection rate. The results showed that the PEDV, PRV and TGEV were prevailing in Shandong province. There were PEDV/TGEV, TGEV/PRV, PEDV/PRV mixed infection, and the number of PEDV/PRV mixed infection was in the majority. However, there was no PEDV/PRV/TGEV mixed type infection. At present, PEDV was the major pathogen of porcine viral diarrhea and the test results could provide the reference to the diagnosis of porcine viral diarrhea.

Key words: porcine epidemic diarrhea virus; transmissible gastroenteritis virus; pseudorabies virus; investigation and analysis

CLC Number:

S858.28

WANG Song, ZENG Hao, CHEN Zhi, JIAO An-qi, ZHANG Shu-jin, YU Jiang, SUN Wen-bo, ZHANG Yu-yu, CHEN Lei, DU Yi-jun, LI Jun, WU Jia-qiang, WANG Jin-bao. Investigation and Analysis of Porcine Epidemic Diarrhea Virus, Transmissible Gastroenteritis Virus and Pseudorabies Virus of Swine Diarrhea Cases in Shandong Province[J]. , 2017, 44(7): 2165-2170.

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Investigation and Analysis of Porcine Epidemic Diarrhea Virus, Transmissible Gastroenteritis Virus and Pseudorabies Virus of Swine Diarrhea Cases in Shandong Province

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