Abstract
In this report, macroscobical and microscobical findings of an infrequent sarcocystosis, located in the Musculus cremaster, and its possible effects on the fertility by external genital organs in a bull were described. The case was detected in a slaughtered bull in a slaughterhouse. During inspection, thickened M. cremaster drew attention in a bull. In addition, slightly increased testes and epididymides, and inconsiderable proliferative lesions on the caput epididymides were detected. In microscobical examination, Sarcocystis cysts in the cremaster muscle, spermiostasis and extravasation of spermatozoa in the epididymides, and weak intratubular orchitis in the testes were observed.