| 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, germany. | by 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 ... | 2010 | 19486494 |