comparative analysis on antibiotic resistance characteristics of listeria spp. and enterococcus spp. isolated from laying hens and eggs in conventional and organic keeping systems in bavaria, investigating the prevalence and antimicrobial resistance characteristics of gram-positive bacteria from organic and conventional keeping systems of laying hens, it was to be determined to what extent these properties are influenced by the different systems. for this purpose, a total of 799 cloacal swabs and 800 egg samples were examined. prevalences for all selected bacteria from cloacal swabs were much the same for both organic and caged birds: listeria spp.1.3%[org] versus 1.6%[con]; enter ...201019486494
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