Epidemiological Aspects and Economic Impacts of Lumpy Skin Disease in Selected Districts of Ethiopia
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Date
2010-06
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Addis Ababa University
Abstract
A cross-sectional study and retrospective questionnaire survey were conducted from October
2009 to April 201 0 in six selected districts of Ethiopia; three districts for serological study were
from Amhara region and the other three districts for retrospective survey in Oromia region. This
study aimed at determining the prevalence and associated monetary losses in intensive small
scale dairy farms and in extensively managed farms. A total of 263 cattle blood samples were
collected from 7 PAs in 3 districts. All the sera were tested using IFA T and VNT. Out of 263
sera, 110 and 85 were positive by IFAT and VNT respectively, giving stopper valences of IFAT of
41.8% and VNT of 32.3%. The retrospective survey was carried on 355 herds having 2954
cattle the latter, 102 herds were intensively managed and had 7 18 cattle while, 253 herds
were extensively managed and had a total of 2236. The relevant data were collected from the
herd owners that dwelt in 25 PAs in 3 selected districts with the objectives of estimating an midlevel
prevalence, mortality and associated monetary losses due to outbreak of LSD. The
computed animal-level prevalence's of LSD outbreak were 13.8% (95% CI: 12.4 - 15.3) and
31.8% (95% CI 28.3 - 35. 8) in extensively and intensively managed farm s, respectively with an
overall animal-level prevalence o f 18.2% (95% Cl: 16.8 - 19.6). The computed percent mortality
was significantly higher in intensively managed farms with 7.24% (95% CI: 5.3 - 9.1 ) than the
percent mortality in extensively managed farms with 1.25% (95% Cl: 0.8 -1.7). The overall
observed mortality was 2.7% (95% CI: 1.3 - 4. 1). The animal- level prevalence's by age-groups
were 12% (95% C I: 8.3 - 17), 17.4% (95% Cl: 13.7 - 21.4) and 19.9% (95% CI: 16.2 - 23.6) in
calves, yearlings and adults respectively. The percent mortality of 4.5% (95% Cl: 3 - 8.9) in
calves were significantly higher than in yearlings. of2.4% (95% CI: 1.2 - 3.6) and of2.4% (95%
CI: 1.7 - 3. 1) in adults The total financial losses due to LSD outbreak were estimated using
economic models for livestock both in intensively and extensively managed farm s and the results
were 28.5 million birr and 5 billion birr respectively. Thus, these findings highlight the
importance and negative impacts of LSD in Ethiopia although the actual financial losses were not
calculated for the complex impacts that could not be estimated in monetary terms for example
abortions, in creases in calving intervals, and poor growth rates.
Key words: Ethiopia, Economic model, IFAT, LSD, Prevalence, Risk factors VNT
Description
Keywords
Eth iopia, Economic model, IFAT, LSD, Prevalence, Risk factors VNT