Sanitary condition of pig manure and microclimate in piggeries under treatment with the biodestructor Sanaero

Currently, technologies for managing unpleasant odors are actively being developed and implemented on farms. Among the existing technologies, microbial deodorization is considered the most promising method of odor control due to its safety, long-lasting deodorizing effect, and low cost. The aim of this study was to investigate changes in conditionally pathogenic (E. coli, S. aureus) and pathogenic (Salmonella) bacteria in pig manure during the filling of underfloor manure pits when using the biodestructor Sanaero. It was found that the microorganisms in the biodestructor Sanaero (Bacillus subtilis, Bacillus licheniformis, Lactobacillus plantarum, Saccharomyces cerevisiae) act antagonistically in pig manure against Escherichia coli and Staphylococcus aureus cells. As a result, the content of E. coli decreased, on average, by two orders of magnitude by the end of the production process of filling the underfloor manure pit, while S. aureus was completely inhibited. Moreover, the number of E. coli cells in the experimental manure was on average 4 - 8 times lower than in the control. This indicates the suppression of conditionally pathogenic bacterial activity by the biodestructor's microorganisms even at low ambient temperatures. The use of the biodestructor Sanaero during the filling of the underfloor manure pit with pig manure promotes the active development of probiotic microorganisms and improves the sanitary condition of pig manure. The use of the biodestructor Sanaero in pig housing facilities significantly reduces the level of microbial contamination of the air, particularly the amount of mesophilic aerobic and facultative anaerobic microorganisms (MAFAnM) and fungal microflora. The effect becomes noticeable as early as the fifth day of using the biological product and remains throughout the entire period of manure pit filling. Therefore, the use of the biodestructor Sanaero is an effective means of improving the sanitary condition of the air in piggeries.