EPIDEMIOLOGY OF CANINE AND SWINE BRUCELLOSIS IN SELECTED AREAS OF EAST SHOA ZONE, OROMIA REGIONONAL STATE, ETHIOPIA
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Date
2018-06
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Abstract
A cross sectional study was carried out from November, 2017 to May 2018 in Batu
town, Alage ATVET College, and Naka village using serological tests, to determine
the seroprevalence of canine and swine brucellosis. Accordingly, a total of 389 owned
dogs (207 from Batu, 107 from Alage, and 75 from Naka) and 196 pigs (167 from
Alage and 29 from Batu swine farms) were included in the study. Rose Bengal Plate
Test (RBPT) prepared from the smooth strain B. abortus antigen was used as a
screening test; whereas Complement Fixation Test (CFT) was the confirmatory test
for both swine and canine brucellosis. Furthermore, all sera samples from dogs had
also screened by RBPT containing a rough strain B. canis antigen; and those positive
samples had considered as positive for B. canis infection. The result of the present
study indicated that, among the 389 sampled owned dogs, 21 (5.4%; CI: 3.35, 7.96)
were positive for anti B. abortus antibodies using RBPT; and 19 of them (4.88%; CI:
2.7, 7.0) were confirmed by CFT. Moreover, 34 (8.74%; CI: 5.92, 11.56) owned dogs
were positive for anti B. canis antibodies. Among 196 serum samples from pigs,
10(5.1%; CI: 0.95, 6.19) were found to be positive by RBPT and 7(3.57%; CI: 1.99,
8.21) of them were further confirmed by CFT. The final simplified multivariable
logistic regression analysis of the risk factors revealed that sex, living condition, and
history of obstetrical problem were significantly associated with the overall canine
brucellosis due to both strains of Brucella species (p< 0.05). Moreover, location
difference and age had also significantly associated with canine brucellosis due to
smooth and rough strains, respectively (p< 0.05). On the other hand, age and history
of obstetrical problems were the major risk factors for overall swine brucellosis
seropositivity (P< 0.05). Thus, the present study suggests that canine and swine
brucellosis are prevalent in the study areas. The seropositivity in both animals could
give an insight that brucellosis could pose a public health hazards. The awareness of
the people toward the disease was also the gap in the study area. Hence, this warrants
public education among the community; and further extensive epidemiological and
molecular investigation is recommended.
Description
A Thesis Submitted to Addis Ababa University College of Veterinary medicine
and Agriculture in partial fulfillment of the requirements for the degree of
Master of
Science in Veterinary Epidemiology
Keywords
Epidemiology, Canine, Brucellosis