Abstract
This study was conducted as a field study to select the most effective disinfectants for control of the microbialcontamination in poultry farms through evaluation of some commercial disinfectants. All tested commercial disinfectantswere diluted with sterile tap water and applied at different concentrations (0.5 and 1.0 %) on contaminated surfaces(concrete) by spraying at a rate of 0.5 liter/m2. The Aerobic Plate Count (APC) on naturally contaminated floor of broilerfarm was determined before the application of commercial disinfectants at different concentrations with contact times of15, 30, 60, and 120 minutes. The results revealed that disinfectants at concentration of 0.5% had little action on the testedpathogens as S. Typhimurium, E. coli and S. aureus after 30 and 60, 90 and 120 minutes contact time. While, applicationof Virudox-G, Glutarol and Alkadox at concentration of 1% for 120 minutes contact time was efficient and proved 100%reduction either for of the pathogens count. While, Phenodex showed the lowest inhibitory effect on these pathogens
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