The Bacterial count and detection of salmonella in some Nile fish and fish wastes

Abstract

This study was carried out in Elmurada market for fishes (Omdurman locality) during the period January to April 2017. todetermine the total bacteria counts and detection of salmonella in the river Nile fish wastes. On total 60 Samples were taken from three (organs 45{skin15, gill 15, and intestine15}) of Nile fish (Heterotisniloticus, tilapia nilotica, Gymnarchusniloticus, Synodontisschall, Hydrocynusvittatus).and from (workers15 {hands 3, utensils 3, cutting board 3, wipe 3, and table surfaces 3}).The resultsclearly showed thatthere are no significant different between the bacterial counts in all samples also salmonella occurrence in all fish spp and workers, the highest percentageof salmonella were in Heterotisniloticus and Gymnarchusniloticus while the lowest percentage of salmonella were in Hydrocynusvittatusfishes. In workers the highest percentage of salmonella was in utensils, wipes, table surfaces), while the lowest percentage was in hands and cutting boards). Finally To control of salmonella, two methods were carried out in this study to know the effect and evaluate the efficacy of the physical and chemical methods.Results of physical method showed that disappearance cells of salmonellaon high temperature (90 C̊),In Chemical method,Salmonella cells absence after immersed in NACL salt.