1987, Cilt 3, Sayı 1, Sayfa(lar) 167-177
Researchizs on biochemical, antibiotics sensitivity and transferable drug - resistance ( R - factor) characteristics of E. c ali strains isolated from diarrheal calves in Konya region.
Mehmet ATEŞ1, İ. Yavuz SEZEN2, Osman ERGANİŞ3, Mehmet ÇORLU4
1S. Ü. Veteriner Fakültesi Mikrobiyoloji Anabilim Dalı, Konya
2S. Ü. Veteriner .Fakültesi Mikrobiyoloji Anabilim Dalı, Konya
3S. Ü. Vet. Fak. Mikrobiyoloji Anabilim Dalı, Konya
4S. Ü. Veteriner Fakültesi Mikrobiyoloji Anabilim Dalı, Konya
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In this study, same biochemical characteristics, different antibiotics resistance states and R- factor transmissibility of 51 E. coli strain.s isolated from calves with diarrhea up to one week age were examined.

Biochemical characteristics of the strains were found to be as follows: The rates for glucose, lactose, mannitol dulsitol, arabinose and adonitol fermentation tests were 100 %, 100%, 100 %, 54.9 %, 98.1 % and 21.6 % respectively and the rates for urease production, citrate utilization, tryp- tophane deaminase, H2S, indol and .motility tests were 100 %, 0.0 %, 0.0 %, 0.0 %, 100%, 0.0 %, 96.1% and 80.4% respectively. It was observed that only one of the whore strains ( 1.96 %) passessed a hemolytic activity.

According to the results of disk diffusion method, antiıbiotic resistance rates of E. coli strains were determined as follows 70.5 % for tetracyline, 86.2 % for oxytetracycline and neomisin, 98.1 % for erytromisin, 54.9% for ampisilin, 49.0 % for streptomisin, 23.4 % for chloramphenicole and 5.9% for nalidixic acide.

Of the strains 94.1 per cent were resistant to more than 3 antibiotics.

The rates of R – plasmid transmission of the strain were found to be 27.1 per cent.