A postal survey was conducted to identify important risk factors associated with the presence or absence of bovine sarcocystosis in a sample of 127 Western Australian cattle farmers. Seventy-three replies were received and analysed using the odds ratio (OR) method.\ud \ud A smaller proportion (P<0.0001) of herds were infected in the northern area (31.2%) than in the southern area (84.2%) and a significantly (P<0.025) higher stocking rate was found in herds infected by Sarcocystis (View the MathML source) than in non-infected herds (View the MathML source).\ud \ud Herds infected by Sarcocystis spp. had higher odds (OR=5.4) (P<0.05) of reporting one or more cases of bovine abortion than non-infected herds. Positive associations were found between infected herds and dogs fed raw meat, the presence of working dogs and the practice of leaving carcases in the field. Foxes were found to be strongly associated (OR=9.17, P<0.01) with Sarcocystis infection in those herds where carcases were not properly disposed of, whereas dingoes and feral dogs (OR=0.20) and feral cats (OR=0.32) were found to be associated with low odds of Sarcocystis infection
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