UJI RESISTENSI ANTIBIOTIK β-LAKTAM PADA BAKTERI Escherichia coli YANG DIISOLASI DARI SUSU DI PETERNAKAN SAPI PERAH KALIWARON, SURABAYA

Milk is a good media for development of pathogenic bacteria that easily contaminated from environment. One species of bacteria widely studied is Escherichia coli. These bacteria are normally grow in the digestive tract. but in certain circumstances may be pathogens that cause gastrointestinal diseases both humans and animals with clinical symptoms of diarrhea. Escherichia coli infection performed an act of treatment with antibiotics, and the use antibiotics making a problem of bacterial resistance to antibiotics. The aim of this research was determine Escherichia coli contamination in milk and its antibiotic resistance pattern to -lactam antibiotics. Milk samples were taken from milk cans belong to the farmers at Kaliwaron dairy’s farm in Surabaya. 10 samples of milk can there were 5 positive samples contained Escherichia coli tested for 4 antibiotics that had been planted in the EMBA media and was confirmed by Indol test. These isolates were identified as Escherichia coli tested for antibiotic Ampicillin, Cefpodoxime, Aztreonam and Cefepime resistance by diffuse disc nietl-od. The isolates of Escherichia coli from Kaliwaron dairy were resistance to Ampicillin, Cefpodoxime, and Aztreonam