The aim of this study was to observe the effectiveness of disinfection on a broiler farm and in a plant processing the poultry from this farm. The broiler farm was disinfected with a preparation based on peracetic acid while a preparation based on quarternary ammonium salt was used in the processing plant. We evaluated swabs taken from surfaces, which come into contact with broilers and broiler meat. Results of the swabs taken by standard microbiological swabbing method were evaluated with results of the swabs taken by the ATP-bioluminescence method. The microbiological examination included total counts of microorganisms, coliform count and moulds. When using the standard plate counts method on the broiler farm we found that the plate counts in 0% of swabs were < 1, in 12% of swabs ranged between 1 -100 CFU while in 88% of swabs reached > 100 CFU. In the processing plant, out of 22% of swabs < 1 CFU were recovered, in 36% of swabs plate counts ranged between 1 -100 CFU and in 42% of swabs plate counts reached > 100. The bioluminescence method was applied only in the processing plant where < 100, 100 -300 and > 300 RLU were measured in 80, 10 and 10% of swabs, resp. Our observations and results allowed us to conclude that the disinfectants tested appeared suitable for the respective premises and the ATP bioluminescence method could be use as a as a suitable complement for detection of cleanliness of individual surfaces. Sanitization, disinfection, poultry, processing plant, standard plate countsThe present requirements on the production of high-quality and safe food are a subject of concern of professionals and wide consumer public in advanced countries with terminal impact on economics of agricultural production, particularly the primary production. According to the valid standards in the Slovak Republic, and in the interest of protection of consumer's health and WHO and FAO recommendations, food producers are bound to make steps which eventually prevent the risk associated with consumption of their products (Hofmann 2000;Burdová et al. 2001). As a result, all production stages must comply with the rules of correct operation practice and the HACCP system must be introduced gradually as an extension of correct operation practice. Sanitation processes are an inevitable part of food production as they influence hygiene and outcome of the entire production system (Bremner and Johnston 1996).Poultry industry is one of the most hygiene-conscious sectors of livestock breeding. The cleaning and disinfection in large plants is ensured by specialized sanitation teams.Monitoring of hygiene under operating conditions is ensured by traditional microbiological swabs and lately also by the ATP-detecting bioluminescence method capable of providing information about contamination of surfaces in less than 10 minutes (Green et al. 1999).
Hygiene and sanitation play a major role in any effective disease control programme for poultry production and processing premises. Various deficiencies in disinfection may induce that chains of infections are not broken from one stock to another. The present study investigated the efficacy of disinfection on a broiler farm and in a plant processing poultry from the investigated farm. Besides inspection of disinfection, the influence of contamination on broiler carcasses and consequences of this contamination on sanitation of the processing lines were studied. Swabs from surfaces coming into contact with the handled raw material were taken and evaluated. The results obtained by a standard microbiological swab method were evaluated and compared with an ATP-bioluminescence method. The investigations included determination of total counts of microorganisms, coliform bacteria and moulds. When employing the standard plate-count method, the total counts of microorganisms (TCM) reached <1, 1-100 and >100 CFU in 0, 12 and 88% swabs on poultry farm and in 22%, 36% and 42% swabs in the processing plant, respectively. The bioluminescence method was used only in the processing plant and contamination corresponding to <100, 100-300 and >300 relative light units (RLU) was detected in 80%, 10% and 10% swabs respectively.
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