Bacteria and their antibiograms
Overgoor, G.H.
Tijdschrift Voor Diergeneeskunde 106(17): 868-872
1981
ISSN/ISBN: 0040-7453 PMID: 7281158 Document Number: 172259
The antibiograms of pathogenic bacteria isolated from pigs and cattle in Gelderland over six years (1974-1979) were studied. Since the introduction of Escherichia coli vaccine, the involvement of pathogenic E. coli in piglet neonatal diarrhoea has been greatly reduced, although serotype O149K91 K88 still dominated. E. coli showed increased sensitivity to streptomycin and tetracycline over the period, but increased resistance to trimethoprim-sulfa. The sensitivity patterns of Pasteurella multocida, B. bronchiseptica, Haemophilus parahaemolyticus, streptococci and Salmonella typhimurium showed little change. Serotype K99+ E. coli of bovine origin became less sensitive to ampicillin and trimethoprim-sulfa. Salmonellosis caused by S. dublin increased as a result of increased resistance to chloramphenicol, tetracycline, furazolidone and trimethoprim-sulfa. S. typhimurium also became less sensitive to chloramphenicol, ampicillin and trimethoprim-sulfa, and a correlation was found between sensitivity and phage types; in 1978 only X201 was isolated while, in 1980, X193 and X ORS were involved; the last two were associated with resistance to trimethoprim-sulfa. P. haemolytica, but not P. multocida, became more resistant to penicillin, streptomycin, tetracycline and sulfonamide.