Aspergillus fumigatus from normal and condemned carcasses with airsacculitis in commercial poultry

Pesquisa Veterinária Brasileira

Andréia Spanamberg²  Gustavo Machado¹  Renata Assis Casagrande¹  Gabriela Miller Sales²  Cibele Floriano Fraga²  Luís Gustavo Corbellini¹  David Driemeier¹  Laerte Ferreiro² 

[1] ,Universidade Federal do Rio Grande do Sul Faculdade de Veterinária Laboratório de MicologiaPorto Alegre RS ,Brazil

关键词: Aspergillosis;    pulmonary aspergillosis;    Aspergillus fumigatus;    respiratory disease;    airsacculitis;    Aspergilose;    aspergilose pulmonar;    Aspergillus fumigatus;    doença respiratória;    aerossaculite;   

DOI  :  10.1590/S0100-736X2013000900004

来源: SciELO

【 摘 要 】

Carcass inspection is important for the detection of certain diseases and for monitoring their prevalence in slaughterhouses. The objective of this study was to assess the occurrence of aspergillosis caused by Aspergillus fumigatus in commercial poultry, through mycological and histopathological diagnosis, and to verify the causal association between the aspergillosis diagnosis criteria and condemnation due to airsacculitis in broilers through a case-control study. The study was carried out with 380 samples. Lungs were collected from broilers that were condemned (95) or not condemned (285) due to airsacculitis directly from the slaughter line. Forty-six (12%) lung samples were positive for A. fumigatus in mycological culture. Among all samples, 177 (46.6%) presented histopathological alterations, with necrotic, fibrinous, heterophilic pneumonia; heterophilic pneumonia and lymphoid hyperplasia being the most frequent. Out of the 380 lungs analyzed, 65.2% (30) showed histopathological alterations and isolation of fungi. The statistical analysis (McNemar's chi-square test) indicated a significant association between the presence of histopathological lesions and the isolation of A. fumigatus. Mycological cultivation and histopathological diagnosis increase the probability of detecting pulmonary alterations in birds condemned by the Final Inspection System, which suggests that such diagnostic criteria can improve the assessment and condemnation of birds affected by airsacculitis.

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