Antibodies against Actinobacillus pleuropneumoniae, Mycoplasma hyopneumoniae and influenza virus and their relationships with risk factors, clinical signs and lung lesions in pig farms with one-site production systems in Brazil

Autor: L. G. de Oliveira, Luis Antonio Mathias, Thaís Gasparini Baraldi, N.R.N. Cruz, Igor Renan Honorato Gatto, Amanda F. da Silva, José Vanderlei Burim Galdeano, A. Panzardi, Daniele Araujo Pereira, Daniel Linhares
Přispěvatelé: Universidade Estadual Paulista (Unesp), Ourofino Animal Health, Iowa State University
Rok vydání: 2019
Předmět:
Veterinary medicine
Swine
animal diseases
Antibodies
Viral
Serology
0403 veterinary science
Actinobacillus Infections
0302 clinical medicine
Food Animals
Mycoplasma hyopneumoniae
Risk Factors
Seroepidemiologic Studies
Medicine
Animal Husbandry
Lung
Swine Diseases
Porcine respiratory disease complex
biology
Actinobacillus pleuropneumoniae
04 agricultural and veterinary sciences
Pneumonia of Swine
Mycoplasmal
Antibodies
Bacterial
medicine.anatomical_structure
Regression Analysis
ELISA
Brazil
Farms
Enzootic pneumonia
040301 veterinary sciences
030231 tropical medicine
Virus
03 medical and health sciences
Orthomyxoviridae Infections
Animals
Seroprevalence
Pleuritis
Pleurisy
business.industry
biology.organism_classification
medicine.disease
respiratory tract diseases
Pneumonia
Cross-Sectional Studies
Logistic Models
Risk factors
Cough
Herd
Animal Science and Zoology
business
Zdroj: Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
ISSN: 0167-5877
DOI: 10.1016/j.prevetmed.2019.104748
Popis: Made available in DSpace on 2019-10-06T15:54:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-11-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) A study was conducted on 21 pig herds using one-site production system in the southeast region of Brazil to assess the relationships among serological results for primary pathogens involved in respiratory diseases (Actinobacillus pleuropneumoniae, App; Mycoplasma hyopneumoniae, Mhyo; and swine influenza virus, SIV), cough index, pneumonia index, pleuritis and herd characteristics. The prevalence of antibodies against Mhyo and SIV increased throughout the raising phases, with the highest prevalence in slaughtered pigs (> 40%), while pigs in 65% (14/21) of nurseries demonstrated marked seroprevalence of App that decreased until the day of slaughter. Pleuritis and pulmonary consolidations were recorded in 9.0 and 72.4%, respectively, of the 908 evaluated lungs. Histopathological analysis of the lung lesions revealed suppurative bronchopneumonia in almost half of the lungs (48.9%). Regression analyses were conducted to identify risk factors associated with the cough index; pleuritis; pulmonary consolidation; and App, Mhyo and SIV serological results. All-in-all-out management in nursery buildings reduced the seroprevalence of Mhyo in herds. App seroprevalence was associated with pleuritis, and the presence of cough episodes in growing pigs was associated with SIV seropositivity in nursery pigs. School of Agricultural and Veterinarian Sciences São Paulo State University (Unesp) Ourofino Animal Health Veterinary Diagnostic and Production Animal Medicine College of Veterinary Medicine Iowa State University School of Agricultural and Veterinarian Sciences São Paulo State University (Unesp) FAPESP: #2015/25318-9
Databáze: OpenAIRE
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