EFFECT OF OPPORTUNISTIC AND PATHOGENIC MICROORGANISMS IN CATTLE IN THE CONDITIONS OF THE SAMARA REGION
Species composition of the microbiocenosis of the gastrointestinal tract of purebred and hybrid F1 cows consisted of resident Enterococcus faecalis, Bifidobacterium bifidum, Lac-tobacillus delbrueckii, Escherichia coli, Serratia marcescens and transient Citrobacter freundii, Enterobacter cloacae, Yersinia en-terocolitica, Salmonella enteritidis microorganisms. All the isolated microorganism cultures had specific biological properties, showed sensitivity to cefepime, cefozopran, cefquin and metro-nidazole (trichopol). At the same time, the drugs with cefepime and metronidazole (trichopolum) showed the greatest effect on conditionally pathogenic and pathogenic microorganisms.