Conditionally pathogenic microflora of consumption eggs as a risk of toxic infections

Abstract

The investigations were aimed to establish the diversityof conditionally pathogenicmicroflora in a poultry farm producing eggs for consumption and to determine the critical points of eggs contamination with pathogenicmicroorganisms, which could be a risk of developing food toxic infectionsin humans. The samples of biological material for microbiological investigations were collected in the rooms where laying chickens are kept, from egg shells, from the equipment, in the room for egg collection,sorting, grading and packaging, from feed and manure. The inseminations were performed on ordinary, selective and specific nutrient media. As a result of bacteriological and bacterioscopic investigations the presence of Streptococcus colonies was detected on the PeptoneAgar medium (roomair and egg shell), fungus colonies on Saburomedium(room air and feed), Salmonella colonies on Bismuth SulfiteAgar and E. coli colonies on Endomedium (faeces). The level of eggs contamination with conditionally pathogenic or pathogenic microorganisms varies depending on the hygiene of the premises, equipment, primary and secondary packaging of eggs, air currents in the building and on the content of microorganismsin poultry faeces.