DETERMINATION OF MILK QUALITY BY BACTERIOLOGICAL AND EXPRESS METHODS

Abstract

Rostov region and was examined in the Taganrog Interdistrict Veterinary Laboratory. In parallel with bacteriological studies, Petrifilm test plates were used to determine QMAFAnM. Milk samples were taken from each lobe of the udder during the morning milking. We examined milk in the first farm from 15 cows there were 60 samples. In the second farm, milk from 10 cows was examined there were 40 samples. In the first farm, in the study of milk from 15 cows by the bacteriological method, microorganisms were detected. Of the 60 milk samples, mesophilic aerobic and facultative anaerobic microorganisms (QMAFAnM), as well as somatic cells, were found in the 21st sample. Rapid test revealed a positive result in 10 samples of milk. Thus, the sensitivity of the rapid test is lower than bacteriological by 47.6 %. In the second farm, when examining milk from each udder share from 10 cows by the bacteriological method, mesophilic aerobic and facultative anaerobic microorganisms (QMAFAnM), as well as somatic cells, were found in 15 samples from 40 samples. Staphylococcus aureus was isolated in two milk samples. A positive result of the rapid test was obtained in 8 samples from 15 milk samples. The sensitivity of the rapid test was 53.33 %. Thus, the bacteriological method turned out to be more sensitive with the rapid test by 53.33 %. The results of the laboratory method and in parallel using the Petrifilm test plate coincided, but not in all samples, but only where the number of microorganisms was many times higher by the bacteriological method. The express method is specific, reduces the time of research.