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A study of fluctuations in Escherichia coli sensitivity patterns from pigs fed a halquinol supplemented diet
Author(s) -
COSGROVE R. F.,
FORSTER T. C.,
JONES G. T.,
PICKLES R. W.
Publication year - 1981
Publication title -
journal of veterinary pharmacology and therapeutics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.527
H-Index - 60
eISSN - 1365-2885
pISSN - 0140-7783
DOI - 10.1111/j.1365-2885.1981.tb00708.x
Subject(s) - escherichia coli , sensitivity (control systems) , food science , zoology , biology , genetics , gene , engineering , electronic engineering
Escherichia coli isolated from pigs fed on a medicated diet containing 120 p.p.m. halquinol did not develop any resistance to this addition over a 6‐week period. Sensitivity patterns of the E. coli isolates to eight antimicrobial substances, although fluctuating slightly during the test period (but no more than a control group), did not significantly alter. However, the patterns did change significantly when for 17 days after the completion of the halquinol trial the pigs were fed a normal commercial ration medicated with a commonly used feed additive containing chlortetracycline hydrochloride, procaine penicillin and sulphadimidine.