Gut microbiome health is increasingly recognized as foundational to farm animal welfare, immunity, and productivity — with management practices that support microbiome health improving overall welfare outcomes.
Gut microbiome science is revealing the biological mechanisms connecting management practices to welfare outcomes in ways previously unexplained. Stress disrupts the gut microbiome, which increases disease susceptibility, which causes more stress — a vicious cycle that explains why stressed animals in intensive systems have such high disease rates. Early life microbiome colonization is shaped by whether animals have appropriate social contact, diverse environments, and maternal exposure. Management practices that support gut health — reducing antibiotic disruption, providing dietary diversity, minimizing stress — improve welfare through mechanisms that include but go beyond direct behavioral responses.