الفهرس 
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Abstract
This study was done to determine the incidence of the major pathogenic diarrhoeal bacterial agents (Salmonella in poult!y and poultry meat products (liver gizzard -heart luncheon)
Morphological, Biochemical and serological characterization to isolated bacteria was encountered.
This study included 90 poultry carcasses, products and environmental samples {( 10 environmental samples, 38 poultry
meat samples and 42 poultry products sample which included
(11 liver, 19 luncheon, 9 gizzard, 3 heart samples )} were
collected from different markets at Cairo and Menoufia Govemorates. The samples were transported in ice tank to
laboratory as soon as possible and culture on selective media. The isolated bacteria were identified by growth characters,
motility, and biochemical reaction and serotyping using specific
antisera.
Results of investigation revealed that Salmonella species were detected in environmental samples (utensils, water), poultry carcasses and poultry products (gizzard, liver, luncheon and
heart) at a percentage of 10%, 2.6% and 2.3% respectively. Out of these positive salmonella isolates (66.6%) strains were belonged to Salmonella enteritidis and 3 3.3%. strains were
belonged to S. typhimurium.
The results of isolation of different bacteria from poultry products indicate that Proteus vulgaris and P. mira bills were the most isolated species from poultry products with a percentage of
(14.3% for each) followed by Serratia marcescens. Staphylococcus aureus