Compositions for gut health

A method for improving one or more metrics in an animal selected from the group consisting of increased bodyweight gain, intestinal health status, decreased feed conversion ratio (FCR), improved gut barrier integrity, reduced mortality, reduced pathogen infection, and reduced pathogen shedding in feces comprising administering an effective amount of a bacterial consortium comprising (a) Lactobacillus reuteri strain S1 deposited at Westerdijk Fungal Biodiversity Institute (WFDB) under number CBS 145921 and comprising the 16S ribosomal RNA nucleotide sequence of SEQ ID NO:

• 7;
• (b) Lactobacillus reuteri strain S2 deposited at WFDB under number CBS 145922 and comprising the 16S ribosomal RNA nucleotide sequence of SEQ ID NO:
• 8;
• and (c) Lactobacillus reuteri strain S3 deposited at WFDB under number CBS 145923 and comprising the 16S ribosomal RNA nucleotide sequence of SEQ ID NO:
• 9 to the animal, thereby improving the one or more metrics in the animal, wherein one or more of the bacterial strains in the bacterial consortium further comprise one or more inactivated or deleted antimicrobial resistance (AMR) genes selected from the group consisting of InuC and vatE, and wherein the one or more AMR genes is located within 10 kilobases of a transposon or other mobile genetic element.