Macroscopic and microscopic diagnosis of Aspergillosis in poultry / Diagnóstico macro e microscópico de Aspergilose em frangos de corte
Varini Ceolin, Lilian; Flores, Fernanda; Mainieri de Oliveira Corrêa, Isadora; Lovato, Maristela; José Nogueira de Galiza, Glauco; Denise Kommers, Glaucia; Risso, Nathália; Morais Santurio, Janio.
Acta sci. vet. (Online);
40(3): 01-04, 2012.
Artigo
em Português
| VETINDEX
| ID: vti-475652
Resumo
Background: Aspergillus fumigatus is considered the major agent of mycotic diseases in birds, affecting mainly the respiratory tract. It is a disease of economic importance in the poultry industry, however it is not a zoonotic or contagious disease. Aspergillus spp. are an environment residents. Infection usually occurs by inhalation of conidia released by molds, which come off the diet or specifi c ingredients, the nest and contamination of eggs during incubation. The objective of this study is to relate the macro and microscopic diagnosis of aspergillosis in poultry.Discussion: The occurrence of aspergillosis depends on the dose of inhaled conidia of the fungus and the susceptibility of the host, which occurs in birds in the fi rst weeks of age, making it more resistant to infection in adults. The history of signs consisting of respiratory distress associated with stressful situations or the recent lack of response to antibiotics may provide support to the clinical diagnosis of aspergillosis. The isolation and identifi cation of the fungus comprises the best method to confi rm the disease agent. Histopathology provides an important contribution to the morphological diagnosis of the lesion and the fungus. The treatment of aspergillosis in poultry production is diffi cult and uneconomical, so that all attention is focused on prevention and control in poultry houses and hatcheriBackground: Aspergillus fumigatus is considered the major agent of mycotic diseases in birds, affecting mainly the respiratory tract. It is a disease of economic importance in the poultry industry, however it is not a zoonotic or contagious disease. Aspergillus spp. are an environment residents. Infection usually occurs by inhalation of conidia released by molds, which come off the diet or specifi c ingredients, the nest and contamination of eggs during incubation. The objective of this study is to relate the macro and microscopic diagnosis of aspergillosis in poultry.Case: In an intensive farming of poultry (Gallus gallus), it was observed mortality rate exceeding 20%, hoarseness and diffi culty breathing in males of approximately two weeks of age. The batch was treated with Terramycin ® (oxytetracyclinehydrochloride) in the fi rst week and Trissulfi n® (sulfamethoxazole, trimethoprim and bromhexine hydrochloride) in the second week. Birds were sent for analysis at the Laboratório Central de Diagnóstico de Patologias Aviárias (LCDPA) of the Universidade Federal de Santa Maria (UFSM). Necropsy was performed in three affected birds and pulmonary aspergillosis was suspected due to local pulmonary and disseminated injuries in the coelomic cavity, associated to the clinical signs. In birds assessed by necropsy examination, it was common the visualization of nodules in the internal
Biblioteca responsável:
BR68.1
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