Experimental infection with Isospora canis Nemeséri, 1959 (sin. Cystoisospora canis), in dogs / Infecção experimental com Isospora canis Nemeséri, 1959 (SIN. Cystoisospora canis)

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

Infections I. canis are usually accompanied by clinical signs. Changes in the consistency of the faeces, diarrhea with blood, anemia, lethargy and death may occur in young dogs. This study aimed to the isolation of Isospora canis from naturally infected dogs, collected by the Center of Zoonoses Control of the city of Campo Grande, Mato Grosso do Sul, and induce infection with this parasite in groups of young dogs, observing aspects of pathogenicity/pathology of this parasite in the experimental host. Faeces samples from 178 litters were examined using the Centrifugo-fluctuation in saturated solution of sugar technique, 47 (26%) of them were positive for I. canis. Twelve young puppies were selected; ten were inoculated with 0,5x104 sporulated oocistys of Isospora canis and, 4 animals were re-inoculated after 9 days from the first infection with 1x104 oocysts. Two dogs were kepted as control. When the necropsies occurred on days 3, 6, 8, 15 and 19 after inoculation there was observed small points of hemorragies, changes in villies, hypertrophy of the caliciform cells and presence of parasitic forms in the macrogametocytes stage in all portions of the small intestine.

ASSUNTO(S)

doencas parasitarias de animais isospora sp patology patologia oocistos oocystis

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