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Ethiopia owns a large poultry population whose growth is highly constrained by diseases. Fowl typhoid is a serious concern in growing and adult poultry and results from infection by Salmonella Gallinarum (Salmonella enterica subsp. enterica serovar Gallinarum biovar Gallinarum). Knowledge of the prevalence of the disease with confirmatory diagnosis is of paramount importance to embark on a control or prevention program. Seroprevalence of this infection in chicken population of Ethiopia has been reported from some parts of this country but in most of the reports it is based exclusively on a rapid slide agglutination test without further confirmation by another specific test. This study screened 279 sera samples of poultry for S. Gallinarum infection by employing plate agglutination test using colored antigen of S. Gallinarum that revealed 125(44.80%) of 279 sera samples positive. However, when plate positive samples were further tested for confirmation by microagglutination test by employing plain antigen of S. Gallinarum, only 55 (19.71%) were serologically positive lowering the prevalence rate from 44.8% to 19, 71%. The study reveals the serological prevalence of Salmonella gallinarum infection in poultry population of the study areas and recommends that the initial screening of this infection by a test like plate agglutination must always be followed by another specific test to get an accurate estimate of this infection. Keywords : Micro-agglutination test, Plate agglutination test, Poultry population, Salmonella gallinarum, Seroprevalence, Addis Ababa, Tigray, Ethiopia.

momona ethiopian journal of science

Seroprevalence of Salmonella Gallinarum Infection in Chicken Population of parts of Tigray and Addis Ababa by Plate Agglutination and Micro-agglutination Tests