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Articles by Yahya Kuyucuoglu
Total Records ( 2 ) for Yahya Kuyucuoglu
  Esra Seker , Yahya Kuyucuoglu and Selahattin Konak
  The aim of this study was to examine the bacterial flora of nasal cavity in apparently healthy and unhealthy Holstein cattle and determine the antimicrobial susceptibilities of Pasteurella multocida and Mannheimia haemolytica strains isolated from samples. Nasal swab samples were collected from 100 Holstein cattle, 70 of these were apparently healthy and 30 were unhealthy with the following respiratory signs: nasal discharge, coughing and dyspnoea. A total of 220 bacterial isolates were detected on Columbia blood agar plates, 102 (46.4%) of these were recovered from healthy and 118 (53.6%) from unhealthy Holstein cattle. The most frequently isolated species from the nasal cavity of the healthy animals sampled were Staphylococcus epidermidis (32.9%) and S. aureus (24.3%), while the most prevalent species in unhealthy cattle were Pseudomonas aeruginosa (40.0%), P. multocida (40.0%) and M. haemolytica (100.0%). According to antibiotic susceptibility test results, enrofloxacin (95.0%) was the most effective antibiotic on P. multocida isolates, while 95.0% of M. haemolytica isolates were susceptible to gentamicin. Among the P. multocida isolates the highest resistance was found against to kanamycin (70.0%), while erythromycin resistance were detected as 90.0% for M. haemolytica isolates.
  Yahya Kuyucuoglu , Beytullah Kenar , Selahattin Konak , Zeki Gurler and Ulap Acaroz
  This study investigated the occurrence and antimicrobial resistance profiles of E. coli and E. coli O157:H7 isolated from cattle and calves faeces samples in Afyonkarahisar. A total of 45 E. coli and 14 E. coli O157:H7 species was isolated. All the E. coli isolates were found to be resistant to the penicillin. However, E. coli O157:H7 species were found to be resistant to the penicillin, ertiyromisin and neomycin. Most of E. coli isolates were found to be resistant to the eritromisin (97.7%), neomycin (95.6%), tetracyclin (73.3%) and ampicillin (60.0%). The tetracyclin to the considerably resistance were seen in both pathogens although, ampicillin resistance was relatively higher in E. coli than in E. coli O157:H7 species. This study observed that cephalothin and cefoxitim resistances were found to highly different the E. coli and E. coli O157:H7 strains. In addition the lowest frequency of resistance was seen against both cefoxitim and ciprofloxacin (7.2%).
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