Macrorhabdus ornithogaster in ostrich, rhea, canary, zebra finch, free range chicken, turkey, guinea-fowl, columbina pigeon, toucan, chuckar partridge and experimental infection in chicken, japanese quail and mice [Macrorhabdus ornithogaster em avestruzes, ema, canário, mandarim, galinha, peru, galinha da Angola, pombo doméstico, rolinha, tucano, perdiz ABSTRACTSince 2000, Macrorhabdus ornithogaster "megabacteriosis" has been diagnosed in the avian diseases laboratory in a diversity of avian species and varied spectrum of disease. The disease in some species (chickens, turkeys, guinea fowls) was clinically characterized by emaciation, prostration, loss of appetite, cachexia and death, with a typically chronic course. A more acute disease was observed in finches (canary-Serinus and zebra-Taeniopygia) and budgerigars (Melopsittacus undulatus). The large rod shaped organism, visible from 100 times magnification, with and without staining, could be detected in sick and also in reasonably normal individuals of some species, such as chickens, turkeys, quails and pigeons. In rheas (Rhea americana), ostriches (Struthio camelus), canaries, zebra-finches, guinea-fowl (Numida meleagris) and budgerigars. The disease was severe, causing to up to 100% mortality. The infection could be detected in some species along with other infectious or disease problems, such as endoparasites (helminths, coccidia) and ectoparasitism (order Mallophaga or/and order Acarina). The cultivation of M. ornithogaster was successfully achieved in solid and liquid media, originated from chickens (four isolates), guinea fowl (1 isolate), chuckar partridge (1 isolate) and canary (1 isolate). A very interesting finding at microscopy was motility of M. ornithogaster, as detected both in cultures obtained on agar for pathogenic fungi and passaged into thioglycolate broth, as well as on samples observed in wet preparations from in vivo. Differences in colony aspects were noted among the isolates. Experimental infections were attempted in chicken and japanese quail, using a chicken isolate, allowing the detection of the organism in the proventriculus and liver in apparently normal birds. One chicken isolate was injected intraperitoneally in Balb/c mice and resulted in 100% mortality.

Communication [Comunicação]Ostrich (Struthio camelus) gastric diseases in Minas Gerais, Brazil, from 1997 to 2009 (Doenças gástricas de avestruzes em Minas Gerais)

O Tumor Venéreo Transmissível (TVT) é um dos tipos de neoplasia mais relatado em cães, sendo observado mais frequentemente na região genital desses animais. Porém, este pode se apresentar tanto na região genital quanto em regiões extragenitais como em cavidade nasal e/ou oral, apesar de ser mais raramente observado nessas regiões. O presente relato de caso trata-se de um cão sem raça definida (SRD) acometido por Tumor Venéreo Transmissível (TVT) na região nasal, sendo esta uma região relativamente rara de ser observada. O diagnóstico foi confirmado através de exames complementares e citologia por punção aspirativa por agulha fina (PAAF), onde foi possível observar elevada contaminação sanguínea e alta celularidade. O paciente foi submetido ao tratamento com o antineoplásico Sulfato de Vincristina (IV) durante quatro semanas, onde obteve-se sucesso na regressão do tumor e o animal apesar de ter ficado com algumas sequelas como desconforto respiratório, respondeu de forma muito satisfatória ao tratamento.