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Sarcocystis species are cyst-forming intracellular protozoan parasites. Cattle are mainly infected with Sarcocystis cruzi, Sarcocystis hominis and Sarcocystis hirsuta. Water buffaloes are intermediate hosts for Sarcocystis fusiformis, Sarcocystis levinei (S. cruzi-like species), Sarcocystis dubeyi, Sarcocystis sinensis (S. hominis-like species) and Sarcocystis buffalonis (S. hirsuta- like species). The aim of this study was Identification of Sarcocystis spp. in slaughtered cattle and water buffaloes in Ahvaz, Khuzestan province by PCR-restriction fragment length polymorphism. Meat inspection was done on 124 cattle and 147 water buffaloes. From each animal tissue samples (each 50 g) from heart, esophagus, diaphragm and intercostal muscle were collected during meat inspection. Samples examined with digestion method. Genomic DNA of 80 positive samples was extracted and their 18S rRNA gene was amplified. PCR products were digested by restricted enzymes (FokI, SspI and DraI). S. cruzi in cattle and S. fusiformis in water buffaloes were identified. Our study clarified that sarcocystosis in cattle in Ahvaz district may be results acute infection according to determined species, but in buffaloes as S. fusiformis was detected we may expect only economic loss follow up slaughterhouse inspection.

Detection of Sarcocystis spp. in cattle (Bos taurus) and water buffaloes (Bubalus bubalis) in Iran by PCR–RFLP