畜牧兽医杂志2024，Vol.43Issue(5)：69-76,8.DOI:10.7606/j.issn.1004-6704.2024.05.016
2020～2023年广西柳州市猪主要病毒性传染病的流行病学调查与分析
Epidemiological Investigation and Analysis of Main Viral Infectious Diseases in Pigs in Liuzhou City,Guangxi from 2020 to 2023
摘要
Abstract
In order to understand the epidemic situation and changing rule of major viral infectious diseases in pigs in Liuzhou area of Guangxi,this experiment used Real-time flu-orescence RT-PCR and Real-time fluorescence PCR to detect the tissue,anticoagulant and cotton swabs of slaughterhous-es,free-range households and large-scale pig farms in some areas of Liuzhou City from 2020 to 2023.Four pathogens of porcine reproductive and respiratory syndrome virus(PRRSV and Nsp2 1559-1680 mutant),classical swine fever virus(CS-FV),porcine circovirus type 2 and type 3(PCV2-3)and por-cine Seneca virus type A(SVA)were detected.The results showed that:(1)The average positive rates of HPRRSV Nsp2 1559-1680 mutant,PRRSV,CSFV,PCV2,PCV3 and SVAwere 0.00％(0/191),8.04％(191/2 377),0.08％(2/2 377),45.23％(992/2 193),32.74％(718/2 193)and 0.16％(2/1 239),respectively;(2)The infection rates of PRRSV,PCV2 and PCV3 were higher,and the infection rates of CSFV and SVA were sporadic.The infection rate of PCV2 decreased year by year,and the infection rates of PRRSV and PCV3 fluctuated greatly.The infection rate de-creased year by year from 2020 to 2022,and the infection rate in 2023 was higher than that in 2022.(3)The positive rate of PCV2 and PCV3 in healthy pig samples was higher than that in dead pig samples in different years,while the positive rate of PRRSV in healthy pig samples was lower than that in dead pig samples in different years.PCV2 mixed with other virus infection was the main type of PCV2 double infection,and PCV2 and PCV3 infection were more serious,with an average infection rate of 15.18％.(4)The mixed in-fection of PRRSV,PCV2 and PCV3 was more serious in tri-ple infection,with an average infection rate of 2.74％.The results showed that PRRSV,PCV2 and PCV3 were the main viral diseases that caused serious harm to pig herds in Li-uzhou City,Guangxi,and mixed infection was more com-mon.Epidemiological monitoring should be further strength-ened,scientific and reasonable immunization procedures and plans should be formulated,and biosafety prevention and control measures at various sites should be strengthened to reduce the pollution,spread and prevalence of pathogens and promote the healthy and stable development of the pig indus-try in Liuzhou City,Guangxi.关键词
猪繁殖与呼吸综合征病毒/猪瘟病毒/猪圆环病毒2型和3型/猪病毒性疫病Key words
porcine reproductive and respiratory syn-drome virus/classical swine fever virus/porcine circovirus type 2 and type 3/swine viral disease分类
农业科技引用本文复制引用
王翠,吴先华,梁竞臻,李宇,覃艳然,许宗丽,周师师,严斯刚..2020～2023年广西柳州市猪主要病毒性传染病的流行病学调查与分析[J].畜牧兽医杂志,2024,43(5):69-76,8.基金项目
广西农业科技项目(Z2023005) （Z2023005）
柳州市科学研究与科技开发项目(2024NZ0401B002) （2024NZ0401B002）
