Evaluation of sanitary-bacteriological condition of milking machines when use washing and disinfectants-brand "Catril" and ROM-PHOS

To improve the sanitary condition of milking machines in the experiment detergent-sanitizers like catril-chlorine, catril-MD-1, catril-D and ROM-PHOS were used. Detergent-sanitizers were used in 0.5; 0.75; 1.0% concentration at a temperature of 40°C and exposure to 5 minutes. The assessment of the quality processing of milking machines was carried out according to the following criteria: visual inspection, determination of bacterial contamination, coli titer, the presence of enteropathogenic strains of E. coli, salmonella in a flushing fluid from the inner surface according to standard techniques. After the conducted researches it was established that the most hard machining parts of milking machines include: collector, teat cups, a milking hose, sealing ring covers of milking machines. Among the researched detergent-sanitizers catril-chlorine 0.75% and 1.0% concentrations have the best cleaning and disinfectant properties. During the visual examination of the internal surfaces it was noticed that milking machines had good sanitary conditions, bacterial contamination was reduced at 12.2-29.1 compared to the control group, coli titer was more than 1. The number of microorganisms during processing of 1.0% solution catril-chlorine is reduced marginally from 0.75%. The worst washing and disinfectant properties in our experience was noted when used catril-D. Bacterial contamination when using the 0.75% and 1.0% of the solution was decreased as compared to control 1.5 - 3.8 times, coli titer was either more than 1 or less than 1. This may indicate low bactericidal action of the tool against E. coli. To prevent the formation of "milk stone" the comprehensive processing was carried out with the use of ROM-PHOS, for washing and disinfecting - catril-chlorine at a 0.75% concentration, which has helped to reduce bacterial contamination in the 3.9 - 7.5 times compared with the control. Coli titer was more than 1. These data show good sanitary condition of the inner surface of milking machines. The presence of pathogenic microflora (salmonella and enteropathogenic strains of E. coli) in the swabs after the treatment of milking machines all the study tools was not detected.