Abstract
Effects of S. miescheriana-infections on body weight gains in pigs wereinvestigated. No effects were observed in pigs inoculated with 102 or 103 sporocysts. Pigs inoculated with 104 sporocysts showed mild diarrhea and anorexia, and slight depression of body weight gain, while those inoculated with 105 sporocysts developed diarrhea, anorexia, increased respiratory and pulse rates, and marked depression of body weight gain. Pigs inoculated with 5×105 sporocysts developed the typical symptoms of acute sarcocystosis and died 15 days after inoculation. Consequently, inoculation with more than 105 sporocysts resulted in marked depression of body weight gain in pigs.
