Abstract
The heart and diaphragm were obtained from 21 adult goats slaughtered in Saitama Prefecture, Japan. Ten of the 21 goats, 48%, were positive for both infections with Sarcocystis capracanis and S. hircicanis. Cysts of S. capracanis (type 1) were 450-562 x 68-78 micron m in size and had the thick wall, 2 to 3 micron m thick, provided with radial striated and palisade-like villar protrusions. Two 6-manth-old dogs fed with goat meat infected with Sarcocystis capracanis cysts (type 1) shed sporulated sprocysts, 14-15 x 9-11 micron m in size, in the feces 9 days after ingestion. S. hircicanis cysts (type 2) were 1,200-1400 x 140-166 micron m insize and had the thin wall, less than 1 micron m, with hair-like protrusions on the surface. Two 6-manth-old dogs fed with S. hircicanis-infected goat meat excreted sporulated sporocysts, 15-17 x 10-11 micron m in size, in the feces 9 days or later after ingestion.
Key words: dog; goat; morphology; Sarcosystis capracanis; S. hircicanis.