Epidemiological investigation of bovine viral diarrhea virus infection in swinery
Acta Agriculturae Shanghai
; 38(5):84-88, 2022.
Article
in Chinese
| CAB Abstracts | ID: covidwho-2283579
ABSTRACT
From 2017 to 2020, 1 078 piglet diarrhea samples were collected from 6 pig farms in different districts of Shanghai. Multiple RT-PCR method was used for detection and analysis to study the infection status of bovine viral diarrhea virus (BVDV) in swinery in Shanghai. The results showed that the overall detection rate of BVDV in swinery in Shanghai was 7.14% (77/1 078), and showed an increasing trend year by year. The mixed infection rate of BVDV and other diarrhea pathogens was high, with the highest dual infection rate (65%, 26/40), mainly BVDV/PASTV (61.54%, 16/26). On this basis, the triple infection rate was 25% (10/40), mainly BVDV/PAStV/PKoV (40%, 4/10) infection mode;The quadruple infection rate was 10% (4/40), which was dominated by BVDV/PAStV/PEDV/PSV (50%, 2/4) infection. The BVDV prevalence in swinery was seasonal, and the prevalence in spring (10.36%) and autumn (13.59%) was higher than that in summer (6.8%) and winter (2.66%). The positive rate of BVDV in different pig farms was significantly different by 0-24.07%. In view of the detection rate of diarrhea virus dominated by PEDV in pig farm 2 had been high in recent years, this study further monitored the infection of BVDV in this pig farm, and found that the detection rate of BVDV in this pig farm was increasing year by year from 2017 to 2019, with the highest detection rate in 2019 (8.61%, 42/488);The mixed infection of BVDV and other diarrhea pathogens was also serious, with the dual infection rate of 57.58% (19/32), triple infection rate of 21.21% (7/32), quadruple infection rate of 21.21% (7/32), respectively. This study enriched the epidemic data of BVDV in swinery in Shanghai, and could provide reference for the prevention and control of pig epidemics.
Meat Producing Animals [LL120], Prion; Viral; Bacterial and Fungal Pathogens of Animals [LL821], Diagnosis of Animal Diseases [LL886], Meteorology and Climate [PP500], autumn, bovine viral diarrhoea, diagnosis, diarrhoea, disease prevalence, disease surveys, epidemiological surveys, epidemiology, mixed infections, piglets, porcine epidemic diarrhoea, reverse transcriptase PCR, seasonal variation, seasonality, spring, summer, temporal variation, winter, mucosal disease, Bovine viral diarrhea virus 1, Bovine viral diarrhea virus 2, Kobuvirus, pigs, Porcine astrovirus, Porcine epidemic diarrhea virus, Sapelovirus A, China, Shanghai, Pestivirus, Flaviviridae, positive-sense ssRNA Viruses, ssRNA Viruses, RNA Viruses, viruses, APEC countries, East Asia, Asia, high Human Development Index countries, upper-middle income countries, Picornaviridae, Picornavirales, Sus scrofa, Sus, Suidae, Suiformes, Artiodactyla, mammals, vertebrates, Chordata, animals, eukaryotes, Mamastrovirus, Astroviridae, Alphacoronavirus, Coronavirinae, Coronaviridae, Nidovirales, Sapelovirus, Eastern China, fall, Bovine viral diarrhoea virus 1, Mucosal disease virus, BVD, People's Republic of China, diarrhea, scouring, disease surveillance, multiple infections, swine, hogs, Porcine epidemic diarrhoea virus, reverse transcriptase polymerase chain reaction, RT-PCR, seasonal changes, seasonal fluctuations
Full text:
Available
Collection:
Databases of international organizations
Database:
CAB Abstracts
Type of study:
Observational study
Language:
Chinese
Journal:
Acta Agriculturae Shanghai
Year:
2022
Document Type:
Article
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