A Survey of Sarcocystis Infections in the Slaughtered Cattle and Identification of Sarcocystis cruzi

도축우의 심장근육내 주육포자충 감염실태조사와 Sarcocystis cruzi의 동정

  • 박양주 (강원도 가축위생시험소) ;
  • 김종술 (강원도 가축위생시험소) ;
  • 정동수 (강원도 가축위생시험소) ;
  • 박양순 (강원도 가축위생시험소) ;
  • 신명균 (강원도 가축위생시험소) ;
  • 김교승 (강원도 가축위생시험소)
  • Published : 1992.11.01

Abstract

330 Samples of the slaughtered cattle heart muscle were collected from the abattoirs of five regions in Kangwon - do to reveal the frequency of sarcocystis infections during January through December in 1991. The samples were inspected for bradyzoites by the trypsin digestion technique and the possitive samples were fed to dogs and cats for the detection of sporocysts shed in the feces. The results obtained were summarized as follows : 1. The infection rate of bovine Sarcocystis investigated from 330 samples was 43.6%. 2. It revealed that the infection rate of Sarrocystis increased gradully with the advance in the age, 14.5% in below two years, 26.1% in the three years, 30% in four years, 54.7% in five years, 74.4% in six years, 90% in seven years and 100% in older than eight years. 3. The cyst walls detected out from the heart muscles were less than l${\mu}{\textrm}{m}$ in thickness and the size of bradyzoites were $11.8{\times}2.8{\mu}m$ in average. 4. The size of sporocysts shed in the feces of dogs were $15.8{\times}9.8{\mu}m$ in average and the prepatent periods ranged from 12 to 16days. 5. Sarcorystis found in the bovine heart muscles were identified as Sascocystis cruzi ( Hasselman, 1923) , wenyon, 1926.

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