Prevalence of Theileria annulata in dairy cattle in Nyala, South Darfur State, Sudan

Prevalence of Theileria annulata in dairy cattle in Nyala, South Darfur State, Sudan

This study was conducted in dairy cattle in Nyala, South Darfur State, during the period from June to September 2015, to study the prevalence of bovine tropical theileriosis. Apparently, healthy cattle of different age groups, different breeds, and from both sexes were randomly selected from seven l...

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Bibliographic Details
Published in:Veterinary World Vol. 10; no. 12; pp. 1475 - 1480
Main Authors: Abaker, Ismail A, Salih, Diaeldin A, Haj, Lima M El, Ahmed, Rawia E, Osman, Manal M, Ali, Awadia M
Format: Journal Article
Language:English
Published: India Veterinary World 01-12-2017
Subjects:
Antibodies
Antigen-antibody reactions
Blood
Bovidae
Cattle
Dairy cattle
Decoloring
Disease transmission
EDTA
Ethylenediaminetetraacetic acids
Fluorescent antibody test
Indirect fluorescent antibody test
Molecular chains
Polymerase chain reaction
Smear
South Darfur
Sudan
Theileria annulata
Theileriosis
Ticks
Darfur Sudan
Sudan
indirect fluorescent antibody test
ticks
South Darfur
Theileria annulata
polymerase chain reaction
Sudan
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Summary:This study was conducted in dairy cattle in Nyala, South Darfur State, during the period from June to September 2015, to study the prevalence of bovine tropical theileriosis. Apparently, healthy cattle of different age groups, different breeds, and from both sexes were randomly selected from seven locations. Three age groups of cattle were selected, group one <1 year old, group two 1-3 years old, and group three older than 3 years. These cattle were indigenous and cross (Friesian X zebu). A total of 150 blood samples were collected for blood smears, blood in EDTA tubes, and serum samples as well as ticks infesting cattle. Three diagnostic techniques were used such as blood smear, indirect fluorescent antibody test (IFAT), and polymerase chain reaction (PCR). Of 150 samples, 11 (7.3%, 95% confidence interval [CI]: 9.1-5.5) were positive for spp. piroplasms in the blood smears, 70 (46.7%, 95% CI: 35.7-57.7) were positive for antibodies in the IFAT, and of 100 samples, 39 (39%, 95% CI: 46.6-31.4) were positive for using PCR. The prevalence of was higher in indigenous breed than cross cattle by the three diagnostic techniques. The highest prevalence of was recorded among cattle older than 3 years old. There were three genera and ten species of ticks found feeding on cattle. These were , and . The study concluded that tropical theileriosis is prevalent among dairy cattle in Nyala. was found in very low numbers, suggesting other ticks may play a role in the transmission of the disease. Molecular characterization of is recommended for accurate mapping of the disease and evaluates the magnitude problem of tropical theileriosis in South Darfur region.
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ISSN:0972-8988
2231-0916
DOI:10.14202/vetworld.2017.1475-1480