Integrating welfare traits into tilapia genetic improvement programs represents a next-generation approach to improving the lives of billions of farmed fish through selection rather than management alone.
Genetic welfare integration in tilapia represents a paradigm shift from managing welfare through environmental modification alone to additionally selecting for genetically based welfare-relevant traits. Animals that are genetically less stress-reactive experience less welfare compromise during the handling events that are unavoidable in commercial aquaculture production cycles. Disease-resistant lines suffer less from the pathogen challenges that are an inherent part of high-density production environments. The scale of tilapia production means that even modest genetic improvement in welfare-relevant traits translates to welfare benefits for billions of individual fish across production cycles. Investment in welfare phenotyping and trait integration in leading breeding programs creates a legacy of improved welfare that propagates through commercial lines globally.