Isolation rate of salmonella in dead chicken from commercial poultry farm in chittagong, bangladesh

Abstract

A cross-sectional survey was undertaken to know the isolation rate of salmonella in dead broiler and layer chickens in the district of Chittagong. Altogether, 100 dead chickens were sampled of which 35 and 65 were broiler and layer chickens, respectively. The isolation and identification of Salmonella from liver samples of these birds were done using standard bacteriological procedures where MacConkey and/or Salmonella-Shigella agar were used as the primary selection media. The results showed that the overall isolation rate of Salmonella was 32% and the isolation rates of Salmonella in broiler and layer chickens were 9% and 91%, respectively. The rates of Salmonella isolation in dead chickens belonging to three different age groups (≤8 wk, 9-20 wk and >20 wk) varied; however, the rate was significantly higher in the chickens of >20 weeks of age compared with ≤8 weeks (P<0.05).