Sanitary and microbiological indicators of drinking water of livestock farms
The article presents data on the study of sanitary and microbiological indicators of drinking water of livestock farms. The criteria for sanitary and hygienic assessment of water from a microbiological point of view are the total amount of microflora and the presence or absence of Escherichia coli, the definition of pathogenic microorganisms, including salmonella, which characterize its fitness for consumption by animals. The main purpose of sanitary and microbiological research is to provide animals, the population with quality water, for which hygienic assessment of water of infectious safety for human and animal health is carried out. Full supply of livestock enterprises with good quality water is one of the main prerequisites for successful production of quality and safe livestock products. The goal of the work. In connection with this, the purpose of our research was to investigate the sanitary and microbiological parameters of the drinking water of livestock farms. Sanitary and microbiological studies of drinking water sources for animals were conducted. It was found that in the studied samples, the number of bacteria of the group of Escherichia coli (BGKP) in 1 liter of water (coli-index) ranges from 200 to 140 000 and more. Of all the samples tested for this indicator, only 39.4% of the reservoirs met the normative indicator. Water samples from artesian wells in 12.3% of cases did not meet the sanitary and hygienic requirements for the amount of BGKP. When carrying out sanitary-microbiological analysis of samples of water from various elements of water supply systems with respect to conditionally pathogenic microflora, it was found that the samples that were collected from the wafers had the highest degree of microbial contamination. The total number of microorganisms was 107 CFU/cm3, and the coli index exceeded 240 thousand units. Examining the water samples found that 40% of the samples had an increased amount of enterobacteria. From the samples tested, 100 cultures of conditionally pathogenic microflora were isolated, including E. faecalis – 32%, E. coli – 23%, E. cloacae – 9%, E. faecium – 11% and K. pneumoniae – 4%, of which 59.3 respectively: 30.4; 33.3; 54.5 and 75% had hemolytic properties. E. faecalis showed resistance to erythromycin, cefuroxime, benzylpenicillin, ampicillin, tetracycline, vancomycin; E. faecium – to vancomycin, ciprofloxacin, tetracycline; representatives of the family Enterobacteriacea (E. coli, K. pneumoniae, E. cloacae) – mainly to amoxicillin, streptomycin, levomycetin.
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