Frequency of infectious diseases associated with reovirosis in broilers

Abstract

Reovirosis has an endemic progress, in broilers farms, alone or in combination with other infectious diseases due to immunosuppression induced by the avian reovirus. The researches was carried out in a flock of 10,000 broilers, where avian reovirosis evolved from the first week of life, moving with reovirosis characteristic syndromes. Following necropsy examinations, performed biweekly, were identified characteristic lesions for reovirosis and for following infectious diseases: colisepticemia, mycoplasmosis, pseudomonosa and Marek's disease. Through this examination were identified pathological dystrophic lesions, whose etiology was confirmed more difficult. Immunosuppression occurred consecutively to avian virus multiplication in lymphoid organs, especially in the Fabricius bursa, favored the emergence of associated infectious diseases which are frequently signaled during the last years in broilers.