FIELD: veterinary medicine.
SUBSTANCE: strip of filter paper with the width of 20 mm is attached on the filter, mounted in the ventilation system of the test livestock building, for a period of 4 hours. 1% sterile glucose solution is prepared on physiological solution, which is used as a nutrient medium. The strip of filter paper is placed in 10 ml solution of glucose and thermostated at the temperature 37±1°C for 2 hours. Then the electric conductivity of the solution is measured. The conclusion about the necessity in sanitary-hygienic processing of livestock buildings is made when the electric conductivity value is 287.3 mcS/cm, which corresponds to maximum allowable concentration of microorganisms in the air of the working area or below.
EFFECT: invention enables to determine reliably the microbiological environment in the buildings and to make the prompt conclusion about the necessity of sanitary-hygienic processing of livestock buildings.
1 dwg
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Authors
Dates
2015-02-20—Published
2013-10-08—Filed