| Popis: |
This thesis is an investigation of 'Salmonella' prevalence and antimicrobial resistance in commercially available pig ear treats and raw food diets and the prevalence of 'Salmonella' shedding by dogs consuming 'Salmonella' positive raw food diets. Pig ear treats and raw food diet samples were purchased from two and three Canadian cities, respectively. Less than one percent of pig ear treats collected in Mississauga, Ontario were contaminated with 'Salmonella' compared to 8.7% in Calgary, Alberta. Fifteen percent of commercial raw food diets purchased in Mississauga were contaminated with 'Salmonella', 37% in Calgary and 10% in Guelph. Fifteen different serotypes were observed, including 'S'. Typhimurium, 'S'. Heidelberg, ' S'. Infantis and 'S'. Hadar. Twenty-eight dogs were enrolled in a feeding trial. Sixteen were fed 'Salmonella' positive raw food diets, and 7/28 (44%) shed 'Salmonella'. Twelve were fed a control diet, none of which shed 'Salmonella'. Several isolates recovered from food and fecal samples contained the same serotypes and antimicrobial resistance patterns. |
