Seroprevalence of Brucella Antibodies in Goats in Oju Local Government : Current School News

Seroprevalence of Brucella Antibodies in Goats in Oju Local Government Area of Benue State, Nigeria

Seroprevalence of Brucella Antibodies in Goats in Oju Local Government Area of Benue State, Nigeria.


In a study to determine the seroprevalence of Brucella antibodies in goats in Oju Local Government Area (LGA) of Benue State, 241 blood samples for sera were collected from goats sold at the Ihiejwu goat market and from some communities within the LGA.

Similarly, epidemiological factors for brucella infection in such goats were studied and risk factors to brucella infection among goats and goat owners were examined through the use of a structured questionnaire.

The serum samples were subjected to Rose Bengal Plate Test (RBPT) and Indirect Enzyme-Linked Immunosorbent Assay (iELISA) to determine the presence of Brucella antibodies.

The RBPT gave a prevalence of 13.7% while the iELISA confirmed the presence of Brucella antibodies in 7.5% of the 241 sera tested. Based on age, 6.98% of the 43 goats below 12 months old were positive

while 7.22% of the 97 goats between 13 – 36 months old were positive and 7.92% of the 101 goats above 36 months old were positive using the iELISA.

Of the 49 male goats sampled, 6.12% were positive while 7.81% of the 192 female goats were positive with the iELISA. Breed-based prevalence rates gave 7.04% of the 213 Kano brown goats and 10.71% of the 28 West African dwarf breed with the iELISA.


1.1 Background of Study

Brucellosis is a zoonotic and contagious systemic bacterial disease primarily of ruminants but also affecting man and other livestock and is characterized by inflammation of the genital organs and foetal membranes, abortion, sterility and formation of localized lesions in the lymphatic system and joints (WHO, 1971; CDC, 2005).

Brucellosis is caused by Gram negative and facultative non-motile intracellular bacteria of the genus Brucella (Corbel, 1997).

Six most common species in the genus Brucella are Brucella abortus, B.melitensis, B. suis, B. neotomae, B. ovis, and B. canis. The first three species are called “classic brucella” (Alton, 1990).

Other species are Brucella maris isolated from marine mammals, B. cetaceae (cetaceans) and B. pinnipediae (pennipeds) (Foster et al, 2002).

Goats and sheep are the natural reservoirs of B. melitensis and the sources of infection for goats are foetuses, foetal membranes, vaginal secretions and the environment (Alton et al., 1988).

The most common route of transmission is via the gastrointestinal tract following ingestion of contaminated pasture, forage and water (PAHO, 2001).


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