EPIDEMIOLOGY, ECOLOGY, AND MOLECULAR GENETICS OF ANTIMICROBIAL RESISTANCE IN PATHOGENIC AND COMMENSAL BACTERIA FROM FOOD ANIMALS
Location: Bacterial Epidemiology and Antimicrobial Resistance
Title: Characterization and antimicrobial resistance of Salmonella isolated from internal tissues, ceca and rinse samples from commercial broiler chickens
Submitted to: Southern Poultry Science Society Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: December 1, 2006
Publication Date: January 22, 2007
Citation: Bailey, J.S., Cox Jr, N.A., Cray, P.J., Richardson, L.J., Buhr, R.J. 2007. Characterization and antimicrobial resistance of Salmonella isolated from internal tissues, ceca and rinse samples from commercial broiler chickens. Southern Poultry Science Society Meeting Abstracts. Jan 22-23, 2007. Atlanta, GA. P.69(P213).
The presence, serotype, and antimicrobial resistance profile of Salmonella from internal tissues (spleen, liver/gall bladder, thymus, Meckel’s diverticulum, and free floating yolk), ceca and carcass rinse samples were determined from six-week-old (n=30) and eight-week-old (n=40) commercial broilers from the rehang line before evisceration. Salmonella Typhimurium was the predominate (153/175, 87%) serotype of the seven serotypes identified. Salmonella Typhimurium isolates were more frequently associated with internal tissues (102/153, 67%) than with ceca and rinse samples (3/22, 14%). The seven isolates that were pan susceptible were from ceca and rinse samples while 156 of 158 (99%) of isolates resistant to two or more antimicrobials were from internal tissue samples. These data indicate that chickens can harbor the same serotypes with different antimicrobial patterns in tissue samples compared to ceca and rinse samples. Further studies are warranted to determine the relatedness of isolates.