An evaluation of production orders for medicated feedingstuffs for pigs given in 1998 in Schleswig-Holstein showed aminoglycosides, colistin and beta-lactam antibiotics as regularly used antibiotical ingredients. The presented study analyses the production orders which include these antibiotics more in detail particularly with regard to the prescribed dosages. In part, there were deviations to the rules of good clinical practise for the use of anitbiotics. The applied dosage of spectinomycin and apramycin was often lower than suggested in the literature. The low oral bioavailability of amoxicillin was not considered when using amoxicillin in medicated feedingstuffs.
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