Epidemiological survey of hemoprotozoan parasites in cattle from low-country wet zone in Sri Lanka
| Autor: | Singarayar Caniciyas Vimalakumar, Thillaiampalam Sivakumar, Hemal Kothalawala, Amitha Sampath Weerasingha, S.S.P. Silva, Naoaki Yokoyama, Atambekova Zhyldyz, Palitha Rohana Yapa, Ratnam Kanagaratnam, Thuduwege Sanath Abeysekera, Erandi Gunasekara, Ikuo Igarashi |
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| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
medicine.medical_specialty Veterinary medicine Trypanosoma Genotype Epidemiology Climate Low-country wet zone 030231 tropical medicine Cattle Diseases Biology Polymerase Chain Reaction 03 medical and health sciences 0302 clinical medicine Hemoprotozoa Trypanosomiasis Babesiosis Theileria parasitic diseases medicine Parasite hosting Animals Management practices Babesia bigemina Phylogeny Sri Lanka Geography Babesia bovis 030108 mycology & parasitology DNA Protozoan biology.organism_classification Theileriasis Infectious Diseases Parasitology Cattle Sri lanka |
| Zdroj: | Parasitology international. 71 |
| ISSN: | 1873-0329 |
| Popis: | application/pdf The diseases caused by hemoprotozoan parasites in cattle often result in economic losses. In Sri Lanka, previous studies found that the up-country wet zone, which is located in central Sri Lanka, was characterized by a high rate of Theileria orientalis and a low rate of Theileria annulata compared with the dry zone. In this study, DNA samples were prepared from the blood of 121 cattle in Galle, a coastal district located in low-country wet zone in Sri Lanka, and were PCR-screened for Babesia bovis, Babesia bigemina, T. annulata, T. orientalis, and Trypanosoma theileri. All the parasite species, except B. bovis, were detected among the surveyed cattle. The animals had a high rate of T. orientalis (100%) and a low rate of T. annulata (1.6%), as in the up-country wet zone. Babesia bigemina and Tr. theileri were detected in 19.0% and 20.6% of the animals, respectively, and their infection rates were higher in the animals reared in extensive management systems (32.8% and 27.9%, respectively) than in those managed in intensive/semi-intensive systems (5.0% and 13.3%, respectively). Genotypic analyses found that the T. orientalis mpsp type 5 was predominant similar to up-country wet zone, and that Tr. theileri consisted of seven catl genotypes, including two new genotypes (IL and IM) and four previously detected genotypes (IA, IB, II, and IK). These findings suggest that the hemoprotozoan infection profiles are largely conserved within the wet zone, despite differences in the geography, cattle breeds, and management practices between the up-country and low-country wet zones. © 2019 Elsevier B.V. |
| Databáze: | OpenAIRE |
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