Factors associated with intramammary infection in dairy cows caused by coagulase-negative staphylococci, Staphylococcus aureus, Streptococcus uberis, Streptococcus dysgalactiae, Corynebacterium bovis, or Escherichia coli
Keywords: آزمایش واکنش زنجیره ای پلیمراز; dairy cow; bovine mastitis; pathogen; risk factor; polymerase chain reaction assay;