Otite parasitária causada por Rhabditis (Rhabditis) freitasi (Nematoda: Rhabditidae) em animais da raça Gir no estado do Acre.

The bovine parasitic otitis has been reported in several states of Brazil. It is caused by rhabditiforms nematodes, attacking cattle Gir and Indubrasil breeds. The aim of this work was to describe the occurrence of the disease in animals of the cattle Gir breed in Rio Branco, State of Acre, Brazil. The animals belonged to the Station of Improvement and Animal Genetic Diffusion. Samples were collected from five of these individuals, with swabs aid, conditioned in plastic tubes and kept in alcohol 70%. The specimens were visualized using optical microscopy, and the morphometry was accomplished through a micrometrical ocular. The data were inserted in the Excel spreadsheet, running on Windows 7, and analyzed through descriptive statistics. The animals presented purulent secretion in the external ear canals, shook their heads, showed inquietude and sensibility to the touch during the clinical trials, when intense infestation was observed. One of the individuals died. Animal genetic improvement programs are negatively interfered by infestations like these. It was possible and opportune to find out the moment and place how such illness has entered in the state of Acre. This work aims to help reinforce the importance of future studies to report new cases in the state of Acre

Descriptive study of Rhabditis freitasi nematodes taken from Gir cattle with severe otitis in northern Brazil

Otitis induced by rhabditiform nematodes in Gir and Indubrasilhas cattle has been reported in several states of Brazil. Nematodes eggs, larvae and adults of both sexes rhabditis freitasi were taken from infested Gir cattle suffering severe ottorhea and examined microscopically and morphologically. Affected cattle presented purulent secretions from external ear canals, shook their heads, appeared irritable and were sensitive to handling. Findings suggest that the condition proliferates through introduction of parasitic-infested animals from endemic areas. Parasite data was analyzed through descriptive statistics and findings are reported