University of Khartoum

Studies on Babesia bigemina in Cattle in Northern Sudan

Studies on Babesia bigemina in Cattle in Northern Sudan

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Title: Studies on Babesia bigemina in Cattle in Northern Sudan
Author: Hashim Mohamed Abdalla, Abdalla
Abstract: Bovine babesiosis is generally accepted to be transmitted by Boophilus spp. but in the Sudan there is no experimental evidence to support this. Although in the Sudan Babesia bigemina is regularly reported, yet sufficient evidence for presence of B. bovis is lacking. However recently, in 1979 FAO- Ticks and Tick- Borne Diseases Control Project identified a focus of B. bigemina and B. bovis at Sagadi area (13o 30' N 33 o 0' E) during an outbreak of red-water disease. Both B. decoloratus and B. annulatus were identified in the area. To clarify the situation at Sagadi area, a short-term (6 months) preliminary survey was conducted. A total of 738 blood films, 303 sera and blood spots and 2294 ticks were collected from 160 cases in addition to two isolates; all were examined and studied. Experimental trials were carried out to determine the role of B. decoloratus, B. annulatus and Hyalomma anatolicum anatolicum in transmission of B. bigemina. The survey resulted in identification of B. bovis, B. bigemina, Theileria annulata and T. mutans microscopically and serologically. The epizootiology of B. bigemina was instable but the situation of tick-borne diseases in general is in need of detailed field and laboratory investigations for up to 5 consecutive years. Experimental transmission resulted in considering the tick B. decoloratus as a natural efficient vector of B. bigemina in Northern Sudan. The role of this tick and other tick species in transmission of bovine babesiosis should be intensively investigated in the future.
URI: http://khartoumspace.uofk.edu/handle/123456789/14880
Date: 2015-06-24


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