Surto de mixomatose em criação de coelhos no estado do Rio de Janeiro: relato de caso

• Autor(a) principal: Penedo, Camila Cristina de Sá
• Data de Publicação: 2023
• Outros Autores: Vasconcelos, Ruben Horn, Bezerra, Windleyanne Gonçalves Amorim, Liparisi, Flávia
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Medicina Veterinária (Recife. Online)
• Texto Completo: https://www.journals.ufrpe.br/index.php/medicinaveterinaria/article/view/5843
• topic: Poxvírus; edema; cunicultura; pet; lagomorfos

This study aimed to report an outbreak of myxomatosis in a rabbit farm located in the rural region of Cachoeiras de Macacu, Rio de Janeiro state, Brazil. A total of 103 rabbits were present in the farm when the outbreak, from which 8 died of the disease and 51 individuals were euthanized with typical clinical signs. Animals presented bilateral blepharoconjunctivitis with purulent discharge, which progressed to bloody rhinitis, facial edema, and the development of nodules in the face, ears, and scrotum. At necropsy, findings included enlarged lymph nodes, splenomegaly, congested lungs, and scrotum edema. Fragments from liver, lungs, kidneys and skin from face and ear nodules were collected for histopathological examination. Analysis of skin samples revealed in vacuolization of keratinocytes with vesicles, bubbles, and pustules, in addition to acanthosis, ulceration and presence of serocelular crust in the epidermis. In dermis, severe edema was observed with marked diffuse mixed infiltrate of heterophils and mononuclear cells in addition to severe mucinous degeneration. Moreover, large star-like cells with cariomegaly and dotted chromatin. Carcasses were incinerated and the 44 remaining animals that did not present clinical signs were submitted to quarantine for 6 months in sheds with nets, electronic repellents and monitored through periodic clinical examinations and laboratorial tests to confirm the flock health. In addition, topical selamectin was administered every 30 days to prevent and control vectors.