This study was conducted as a field study to select the most effective disinfectants for control of the microbial contamination in poultry farms through evaluation of some commercial disinfectants. All tested commercial disinfectants were 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/m 2. The Aerobic Plate Count (APC) on naturally contaminated floor of broiler farm was determined before the application of commercial disinfectants at different concentrations with contact times of 15, 30, 60, and 120 minutes. The results revealed that disinfectants at concentration of 0.5% had little action on the tested pathogens as S. Typhimurium, E. coli and S. aureus after 30 and 60, 90 and 120 minutes contact time. While, application of 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.
The present study was performed to evaluate the efficiency of disinfection process applied in poultry farms and determination the major input of infection into poultry farms. A total of 140 samples and swabs were collected from farm A and B with an average of 70 samples from each farm. These samples were collected from floor, walls, drinker, feeder, air, windows, fans, boats, car rubber, cloaca, litter, water, feed and hands samples (5 of each) from two broiler farms before and after disinfection. The results showed that Salmonella Kentuckey, Salmonella Typhymurium, Salmonella Enteritidis and Salmonella Virchow were higher in different samples taken from farm (A) than in different samples taken from farm (B). Actually, E. coli serotype O1 was detected in drinker, boots, cloaca, litter (20% of each) & car rubber (40%) of farm (A) and only from car rubber (20%) of farm (B). Moreover, E. coli serotype O2 was isolated from fan, feeder, feed (20% of each) & boots (40%) of farm (B). However, E. coli serotype O78 was detected in floor, feeder, cloaca, water (20% of each) & feeder & litter (40% of each) of farm (A) and feeder, cloaca (20% of each) & litter (40%) of farm (B). In concern to S. aureus, the isolation percentages from wall, fan, cloaca, litter (20% of each), floor, drinker, boots, air (40% of each), car rubber (60%) & worker hands (80%) of farm (A) and only from drinker & car rubber (20% of each) of farm (B). While, C. jejuni was recovered floor, wall, fan, feeder, boots, water (20% of each), drinker, cloaca (40% of each) & litter (60%) of farm (A) and only from cloaca and litter (20% of each) of farm (B).
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