title: [Sarcosporidia and sarcosporidiosis in agricultural animals. II. Sarcosporidiosis in cattle].
abstract: A total of 458 cows, oxen, and calves (up to the second year of age) were studied over the 1971-1973 period. The animals were slaughtered at the abattoir of the town of Bourgas, originating from 59 communities on the territory of Bourgas district where the field and feeding conditions varied. Samples were taken from the gullet, tongue, pharynx, diaphragm, cervical muscles, and heart, using the compression slide method to demonstrate the presence of microcysts. Sarcosporidia were found in 398 animals as follows: cows and oxen involved--99.11 per cent; calves--75.53 per cent. The average value for the whole group was 86.89 per cent. Lowest were the cases of parasitic infection in calves that were raised indoors, with lowest parasite burden in the animals involved. On the other hand, highest microcyst burden was found in calves that had been kept in mountainous grasslands. No differences were found in the extent of parasite infection between the animals of the two sexes. More severe was the infection in animals in the individual microregions (communities) and the mountainous region as a whole, and it was lowest in animals in the plain region of the district. Both the percentage of animals involved and the parasite burden showed year-to-year variations. Microcysts were observed in all investigated organs. The heart muscle was most frequently involved in all affected animals, showing also highest parasite burden. Lowest were the values concerning the skeletal musculature (cervical muscles). The data of the investigation are given in three tables.
mesh_terms: D000367:Age Factors; D000822:Animal Husbandry; D000818:Animals; D002031:Bulgaria; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D002584:Cervix Uteri / Q000469:parasitology; D003964:Diaphragm / Q000469:parasitology; D004947:Esophagus / Q000469:parasitology; D005260:Female; D006321:Heart / Q000469:parasitology; D008297:Male; D010614:Pharynx / Q000469:parasitology; D012522:Sarcocystis / Q000302:isolation & purification; D012523:Sarcocystosis / Q000453:epidemiology / Q000662:veterinary*; D012737:Sex Factors; D014059:Tongue / Q000469:parasitology
vernacular_title: Sarkosporidii i sarkosporidiozi po selskostopanskite zhivotni. II. Sarkosporidii po govedata