16S-V4 metagenomics: 10^2 CFU Salmonella-spiked caecal content DNA extracted directly replicate A
DNA extracted with DNeasy PowerSoil Pro Kit (Qiagen). V4 variable region amplified by PCR with primers 515F-806R (Caporaso 2011) and sequencing libraries were prepared according to the 16S Metagenomic Sequencing Library Preparation protocol.