الفهرس 
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Abstract
A total of 444 random samples of animal offal (liver and kidney) in addition to swabs and surface tissue excisions from cattle, camel and buffalo (50, 48 and 13) samples, respectively were collected randomly from different slaughter houses at El Sharkia governorate, Egypt. The collected samples were subjected to bacteriological, serological and PCR examinations for detection of Salmonella virulence genes followed by application of antimicrobial susceptibility pattern of identified Salmonella then the effect of some disinfectants was in vitro studied on Salmonella Typhimurium in vitro .
Cattle:
The incidence of Salmonella spp was 14% (7 from 50), 12 % (6 from 50 ) , 0 % (0 from 50) and 6% (3 from 50) in liver, kidney ,swab and surface excision, respectively with a total percentage of 8 % (16 from 200).
Camel:
The incidence ratio of Salmonella spp was 14.58% (7 from 48) , 2 % (1 from 48 ) , 0 % (0 from 48) and 2% (1 from 48) in liver , kidney ,swab and surface excision, respectively with a total percentage of 4.68% (9 from 192).
Buffalo:
The incidence ratio of Salmonella spp was 7.69% (1 from 13) , 0% (0 from 13 ) , 0 % (0 from 13) and 0% (0 from 13) in Liver , Kidney ,Swab and Skin excision ,respectively with a total percentage of 1.93% (1 from 52).