Cutaneous pythiosis in cattle in the Southern region of Rio Grande do Sul, Brazil

Pesquisa Veterinária Brasileira

Grecco, Fabiane B.¹  Schild, Ana Lucia²  Soares, Mauro Pereira²  Assis-Brasil, Natália D.²  Marcolongo-Pereira, Clairton¹  Quevedo, Pedro¹  Kommers, Glaucia D.³ 

[1] Universidade Federal de Pelotas, Pelotas, Brasil;UFPel, Pelotas;Universidade Federal de Santa Maria, Santa Maria, Brasil

关键词: Oomycetes;    Pythium insidiosum;    epidemiology;    cattle;    pythiosis.;   

DOI  :  10.1590/S0100-736X2009001100013

来源: Colegio Brasileiro de Patologia Animal-CBPA

【 摘 要 】

An outbreak of cutaneous pythiosis is described in cattle from southern Rio Grande do Sul, Brazil. Cattle were introduced into flooded pastures and developed ulcerative and wet cutaneous lesions on distal limbs and Planum nasale. Histologically, the lesions were characterized by multiple granulomas with intralesional hyphae, better seen in the methenamine silver stain, and surrounded by abundant fibrous tissue. Diagnosis was based on epidemiology, gross and histological lesions, and by positive immuno-histochemical reaction with anti-Pythium insidiosum polyclonal antibody. Morbidity was 23.8% and lesions were observed 15-90 days after cattle were introduced in the flooded area. Affected cattle had spontaneous healing without treatment. It is suggested that the disease is more frequent than what was earlier thought, mainly in flooded areas of the Southern region of the Rio Grande do Sul State.Index

【 授权许可】

CC BY-NC