Bovine trypanosomosis: A threat to cattle production in Chena district, southwest Ethiopia

Abstract

A cross-sectional study to determine the prevalence of bovine trypanosomosis was carried out in Chena district, Kefa zone, southwest Ethiopia from September 2010 to January 2011. Blood samples were collected from 391 randomly selected local (zebu) breed cattle in three representative peasant associations (PAs). The buffy coat and Giemsa stained thin blood films examination techniques were used for parasite detection and identification. The packed cell volume (PCV) estimation was also conducted. From a total of 391 cattle, 6.9% (n = 27) of the animals were found positive for trypanosome infection. The trypanosome species observed across the study animals were T. congolense (4.89%), T. vivax (1.54%), and T. b. brucei (0.51%) as single infections. The infection rate of T. congolense and T. b. brucei varied significantly (P < 0.05). The statistical analysis revealed that no significant difference (P > 0.05) in infection rate was found between male (7.79%) and female (5.62%) animals. The prevalence was 2.24% and 8.29% in young and adult cattle, respectively with significant difference (P < 0.05) between them. The prevalence rate in good, medium and poor body conditioned animals were 7.28%, 0.78% and 13.39%, respectively with a statistical significant difference (P < 0.05) among them. The mean PCV of the infected animals (17.56%) appeared significantly (P < 0.05) lower than the non-infected (25.4%). Even if, the present study indicated a low prevalence of bovine trypanosomosis in the study areas, its impact on production and potential transmission to others should not be neglected.

Prevalence of Bovine Trypanosomosis and Apparent Density of Tsetse and Other Biting Flies in Mandura District, Northwest Ethiopia

“…This result is consistent with the work of Teka et al [5] which reported 4.43% bovine trypanosomosis prevalence in selected villages of Arba Minch; Adale and Yassine [7] which reported 6.3% in Wolaita zone of Kindo Koish district, Southern Ehiopia; Degneh et al [8] reported 6.86% in Lalo Kile district of Oromia regional state; Alamayew et al [9] which reported 6.9% in Chena district, south west Ethiopia and Denbarga et al [10] which reported 4.2% in South Achefer district, Northern Ethiopia.…”

Untitled

“…The overall prevalence of bovine trypanosomosis was 21.25% which was higher when compared with previous reports in different parts of the country, such as 1.3% in Arbaminch by Girma et al 16 6.9% in Chena district by Alemayehu et al 17 altitude, rainfall, and temperature and livestock management system. But the research was agreed with NTTICC 20 with prevalence of 22% in Gari settlement area.…”

Heterogeneity in the prevalence and intensity of bovine trypanosomiasis in the districts of Amuru and Nwoya, Northern Uganda

“…Similar results have been found in several previous studies [ 6 , 26 – 29 ]. This could be attributed to differences in the period of exposure to vectors between the cattle age groups [ 28 ]. In traditional grazing systems, suckling calves are restricted or grazed at homesteads and not allowed to graze with adults until weaned off [ 27 ].…”