Abstract
Using the experimental model ‘Sarcocystis rodentifelis – laboratory rat (Rattus norvegicus var. alba)., three experiments with 340 ‘Wistar’ rats were carried out. The aim of the study was: (1) to investigate a possibility of the faecal-oral transmission of S. rodentifelis in rats; (2) to find oocysts or sporocysts of that parasite in faeces of sarcocyst-infected rats; (3) to evaluate the role of transplacental transmission in the distribution of S. rodentifelis. It was established that intestines of rats infected with S. rodentifelis sarcocysts are infective to intact rats from days 4–8 to 54–70 (throughout the experiment) and faeces – from days 6 to 80 after the sarcocysts are eaten. In faeces of sarcocyst-infected rats, several sporocysts and one oocyst were found. In rodent faeces, sarcosporidians of those stages were detected for the first time. Sarcocysts were not found in muscles of 83 rattling born by eight females infected with oocysts/sporocysts of S. rodentifelis. A conclusion was drawn that fae...
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