Simpson’s Index of Diversity (1-D) among isolates from poultry faeces and farm environment.

a Isolates from faeces and rinse water (‘Flocks) or isolates from the farm environmental (‘Environment’) b Diversity was analysed for three combinations of isolate characteristics: phylogenetic subgroup and ESBL-genotype; (Phylo/ESBL); ST, phylogenetic subgroup, ESBL-genotype and ABR profile (ST/Phylo/ESBL/ABR) and ESBL-genotype and ABR profile (ESBL/ABR) * = At the same characteristics level, the difference between broiler and laying hen farms is statistically significant (P<0.05) using the Mann-Whitney U test ° = Within farm type and at the same characteristics level, the difference between ‘Flocks’ and ‘Environment’ is statistically significant (P<0.05) using the Wilcoxon Signed Ranks test. Simpson’s Index of Diversity (1-D) among isolates from poultry faeces and farm environment.