Assessment of Zoonotic Pathogenic Bacteria in the Cattle Slaughterhouses and the Efficacy of Some Disinfectants: A Public Health Perspective from Menoufia Governorate, Egypt.

The process of cleaning and disinfecting the slaughterhouse, the animals, the surroundings, and the hands of the employees is an critical control point for excellent hygiene and biosecurity procedure. The aerobic bacteria: Staphylococcus aureus, Escherichia coli, and Salmonella sp. were counted in the current investigation to evaluate the contamination of the abattoir and its consequences. 600 samples were gathered in all, including 150 samples per knife, 150 samples per floor, 150 samples per workers’ hands, and 150 samples per wall. All the swabs were obtained from three abattoirs in the Menoufia governorate (Menouf, Tala, and El-Shohadaa). Aerobic bacteria results showed that the walls of the abattoirs had the greatest values, followed by the floors, knives, and hands of the workers. A total occurrence rate of 73.5% (441/600) of S. aureus was obtained from all the samples collected from all the slaughterhouses, whereas a total occurrence rate of 52.33% (314/600) of E. coli was recorded from all the samples from all the slaughterhouses. Additionally, the overall value of Salmonella sp. in all slaughterhouses was 23% (138/600). No discernible difference between the occurrence rates of the pathogenic bacteria and the climatic conditions at the time of sampling was found. Furthermore, Hydrogen peroxide was the most efficient disinfectant after using disinfectants on all the evaluated samples. The real state of contamination in the slaughterhouses' environment and the impact of disinfectants were shown by the microbiological analysis of the samples that were collected in the current investigation.