The aim of this study was to establish the difference in the total number of bacteria present on some surfaces after disinfection was performed either by a professional or a layman employed at the slaughterhouse. Based upon the obtained results it can be concluded that there were omissions in the disinfection procedure. The study material consisted of wet and dry swabs taken during a five week period, before and after disinfection was performed either by a professional or a laymen. The following surfaces were sampled: meat carving knife, meat hooks, floor of the stunning area, and corridor floor. The procedure for wet swabs was carried out in accordance with the standard ISO 18593 method. The number of bacteria was estimated from each sample with the standard ISO 4833 method. Disinfection was performed with a 0.02% chlorine solution; the exposition time was 30 min. According to the obtained results it can be concluded that after disinfection was carried out by a professional- veterinarian, or by a layman, all surfaces which were previously treated correctly (mechanical cleaning and sanitary washing), and disinfected measured a significant decrease in the number of total bacteria (log cfu/cm2). The results for the total number of bacteria obtained after disinfection of the stunt area indicate on possible omissions as the number of bacteria did not decrease.

Pheasant farms represent semi-closed production facilities with several production units that are cyclically connected and are used for growing pheasants of different age categories. Production units consist of an aviary for parent stock, egg storage room, incubation station, facilities for raising young pheasants and open aviaries where pheasants are raised till their release on hunting areas. Continuous implementation of biosafety measures at all stages of the technological process of production is necesarry in order to achieve good production results ; that is raising healthy pheasants. Disinfection is one of the most important biosigurative measures which must be continually implemented in farm facilities. In this paper, the effect of disinfection with peracetic acid and paraformaldehyde based solutions has been monitored at different stages of production, and on different surfaces. Monitoring of the microbiological status of the area within the production facillity resulted in reduction of the total number of bacteria, fungi and mold in a smaller or greater extent depending on the place of sampling and type of a production unit.