Date of Graduation


Document Type


Degree Name

Master of Science in Poultry Science (MS)

Degree Level



Poultry Science


Fred D. Clark

Committee Member

Richard K. Bramwell

Second Committee Member

Susan E. Watkins


Biological sciences, Health and environmental sciences, Broiler breeders, Disinfectants, Salmonella


Salmonella have been causing huge losses in the poultry industry and have been a major cause food borne illness for many years. Salmonella infections in humans from poultry have been increasing. Good hygiene and biosecurity measures can reduce the incidence of Salmonella infections at poultry farms. Disinfection is a most important measure taken to prevent Salmonellosis in poultry. This research was conducted to determine the efficacy of 12 disinfectants against seven Salmonella isolates in the presence and absence of organic matter. A bacterial solution of a specific optical density value was prepared and .05x, .1x and .2x concentrations of disinfectants were tested at 10, 30 and 60 minutes. Litter and chick fluff were also added to the solution to determine the effect of organic matter on the efficacy of disinfectants. The majority of the disinfectants showed good results in the absence of organic matter. Addition of organic matter affected the efficacy of most disinfectants. An Unnamed disinfectant proved to be the best in all tested conditions. GQ-1 sanitizer and Virocid also showed some antimicrobial activity in the presence of organic matter. Crystal Bright was only efficacious in the presence of litter.