Coccidiosis in wild grey kangaroos |
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Authors: | IK BarkerKE Harrigan |
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Institution: | Dept. of Veterinary Paraclinical Sciences, University of Melbourne, Veterinary Clinical Centre, Werribee, Vic. 3030, Australia; Fisheries and Wildlife Department, Arthur Rylah Institute for Environmental Research, Heidelberg, Vic. 3084, Australia |
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Abstract: | Deaths occurred among wild grey kangaroos (Macropus giganteus) whose habitat was subject to flooding. A sample of the involved juvenile animals was hypoproteinaemic, and extensive haemorrhagic enteritis, associated with the presence of coccidial life cycle stages was found in the small intestine at necropsy. Masses of small schizonts infected cells of the lamina propria; large schizonts occupied clusters of hypertrophied cells; macrogametes and microgametocytes were observed in cells of the lamina propria. The species of coccidia involved could not be determined, although oocysts of Eimeria cunnamullensis and E. kogoni were found in faeces. Overcrowding, food shortage, damp conditions and possibly feed supplementation with hay on the ground were considered probable epizootiological factors contributing to an outbreak of coccidiosis among juvenile animals. |
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Keywords: | Marsupialia Macropodidae Macropus giganteus grey kangaroo coccidiosis Eimeria schizont gametocyte enteritis hypoproteinaemia |
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