Determination of Salmonella in table egg (shell and content) and associated factors in some selected areas of Bangladesh

Abstract

Salmonellosis is one of the most common and widely distributed food-borne diseases. It constitutes a major public health burden and represents a significant cost in many countries. Salmonella are known for its wide range host. It can cause variety of diseases in some hosts while in others, can be asymptomatic. Poultry and eggs are considered as major sources for different pathogenic Salmonella serotype. . Eggs produced locally under the small scale layer farm may present a hazard to consumers which may increase the spread of Salmonella in the environment. To investigate the occurrence of Salmonella, a total of 72 samples were taken from 6 poultry farm in some selected area of Bangladesh. Sampling program was executed between November and December, 2013 and samples were tested using standard laboratory methods. Data was collected through direct interview and structured questionnaire which developed and validated by academic supervisor. The study showed that the true prevalence of Salmonella in egg shell and egg contents were 0.093% and 0.068% respectively. The highest apparent prevalence in Udayan poultry farm (50%) and lowest in Liza poultry farm (16.67%). The average frequency of egg shell contamination is positively correlated with reuse of egg trey without disinfection. To the best of our knowledge, this is the first study in Chittagong investigating the of Salmonella spp. in eggs in selected local egg production farms. Further detail study is highly recommended.