Etiology analysis of the bacterial secondary infection of PRRSV in Sichuan Province from 2013 to 2016

doi:10.3969/j.issn.1004-1524.2017.09.03

›› 2017, Vol. 29 ›› Issue (9): 1437-1444.DOI: 10.3969/j.issn.1004-1524.2017.09.03

• Animal Science • Previous Articles Next Articles

Etiology analysis of the bacterial secondary infection of PRRSV in Sichuan Province from 2013 to 2016

LI Youyou¹, LI Xiaojing¹, GONG Shuangyan¹, AO Ying¹, ZHU Ling^{1, 2, *}, XU Zhiwen^{1, 2}

1. College of Veterinary Medical, Sichuan Agricultural University, Chengdu 611134, China;
2. Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu 611134, China

Received:2017-04-11 Online:2017-09-20 Published:2017-09-27

Abstract

Abstract: This experiment was conducted to provide references for clinical management and treatment of PRRSV secondary infections. In this study, morphology observation, selective culture, biochemical identification were used to identify the secondary infective bacteria of PRRSV around 112 piglets from Sichuan province in 2013-2016. Staphylococcus aureus, Streptococcus, Pasteurella multocida, Escherichia coli and Actinobacillus pleuropeumoniae were isolated. Isolation rate of Staphylococcus aureus was the highest (70%), followed by Pasteurella(50%), Escherichia coli (40%), Actinobacillus pleuropneumoniae(40%), Streptococcus (30%). Secondary infection occurred mainly in the liver and lungs, followed by spleen and pericardial effusion. Animal experiments showed that Pasteurella multocida, Escherichia coli, Streptococcus, Actinobacillus pleuropneumoniae were pathogenic. Susceptibility testing showed that Pasteurella multocida was highly sensitive to ciprofloxacin, moderately sensitive to gentamicin; Escherichia coli was highly sensitive to amikacin, and moderately sensitive to ampicillin, gentamicin and neomycin; Streptococcus was moderately sensitive to kanamycin; Actinobacillus pleuropneumoniae was moderately sensitive to ciprofloxacin.

Key words: PRRSV, bacteria, secondary infection, etiology

CLC Number:

S855.1

LI Youyou, LI Xiaojing, GONG Shuangyan, AO Ying, ZHU Ling, XU Zhiwen. Etiology analysis of the bacterial secondary infection of PRRSV in Sichuan Province from 2013 to 2016[J]. , 2017, 29(9): 1437-1444.

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Etiology analysis of the bacterial secondary infection of PRRSV in Sichuan Province from 2013 to 2016

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