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Product title :

Seroepidemiological survey of bovine brucellosis in cattle under a traditional production system in western Ethiopia

Author(s) : K.E. Adugna, G.E. Agga & G. Zewde

Summary :

No. 28052013-00001-EN

Bovine brucellosis, an important bacterial zoonosis, is usually associated with intensive systems of production. A cross-sectional study was conducted in western Ethiopia to determine the seroprevalence of bovine brucellosis in cattle under traditional extensive husbandry. Sera collected from 1,152 cattle originating from 164 herds were screened, using the Rose Bengal test, and all positive sera were then examined, using complement fixation as a confirmatory test. Based on the results of two-step testing, the apparent seroprevalences were 1% (95% confidence interval [CI]: 0.5%, 1.7%) at the animal level and 4.9% (95% CI: 1.6%, 8.2%) at the herd level. A random-effects binary logistic regression model was used to examine potential risk factors, using ‘herd’ as a random effect. Herd size (p = 0.009) and abortion (p = 0.015) were significant risk factors for animal-level seropositivity, after controlling for other factors. Although bovine brucellosis was found at a low prevalence in the indigenous cattle population, the disease should be considered in any future expansion of dairy cattle production involving improved breeds.

Bovine – Brucellosis – Complement fixation test – Ethiopia – Rose Bengal test – Seroprevalence – Western Ethiopia.

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