Sarcocystis infection and myocardial pathological changes in cattle from south-eastern Norway [myocarditis, arteriosclerosis]
1980
Bratberg, B. | Landsverk, T. (National Veterinary Inst., Oslo (Norway))
The incidence of myocardial sarcocystis infection and of myocardial pathological changes was recorded in samples of 79 healthy cattle obtained from an abattoir. The incidence rate of thin-walled cysts of S. cruzi was 81.0 per cent, while mixed infection with thick-walled cysts of S. hominis and/or S. hirsuta was found in 5.0 per cent. Focal interstitial myocarditis was found in 31.6 per cent of the samples. The sarcocystis infection and the interstitial mononuclear cell infiltrates were positively associated (P 0.05). Intimal proliferations of musculo-elastic or fibro-elastic tissues in the intramural coronary arteries were found in 75.0 per cent of the cattle older than 3.5 years of age, and in 45.7 per cent of the cattle less than 3.5 years old. No association of the arterial lesions and the sarcocystis infection was demonstrated
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