Intranuclear coccidiosis caused by Cyclospora spp. in calves
| Autor: | Koichi Kadota, Shinichi Hatama, Yoshiharu Ishikawa, Minako Yamada |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Diarrhea
China Pathology medicine.medical_specialty Cattle Diseases Eimeria alabamensis Biology 18S ribosomal RNA Microbiology Desquamation Atrophy RNA Ribosomal 18S medicine Animals Parasite hosting Feces General Veterinary Coccidiosis medicine.disease biology.organism_classification Cyclospora Cattle medicine.symptom RNA Protozoan |
| Zdroj: | Journal of Veterinary Diagnostic Investigation. 26:678-682 |
| ISSN: | 1943-4936 1040-6387 |
| DOI: | 10.1177/1040638714542869 |
| Popis: | Intranuclear coccidiosis in 3 calves is described. Two calves with no genetic relationship were kept in the same pen, and the third calf was on another farm. The animals suffered from watery diarrhea or severe emaciation. Histologic examination showed epithelial desquamation (cases 1 and 2) or atrophy (case 3) of the jejunal villi. Coccidial meronts or merozoites were present in the nuclei of the majority of villus epithelial cells. There were rare intranuclear macrogametocytes, macrogametes, microgametocytes, microgametes, and oocysts in cases 1 and 2, but these were more easily observed in case 3. Parasite 18S ribosomal RNA sequences from case 1 showed 99.5% sequence identity with Cyclospora sp. Guangzhou 1, which has been found in fecal samples of cattle from China. In addition to the molecular results in one of the cases, the fact that the microgametocytes and oocysts were noticeably smaller in size than those of Eimeria alabamensis in all cases indicates the close association between Cyclospora and the 3 cases described herein. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|