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

Andréia Spanamberg, Gustavo Machado, Renata Assis Casagrande, Gabriela Miller Sales, Cibele Floriano Fraga, Luís Gustavo Corbellini, David Driemeier, Laerte Ferreiro

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)1071-1075
Number of pages5
JournalPesquisa Veterinaria Brasileira
Volume33
Issue number9
DOIs
StatePublished - Sep 2013

Keywords

  • Airsacculitis
  • Aspergillosis
  • Aspergillus fumigatus
  • Pulmonary aspergillosis
  • Respiratory disease

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