Genomic selection technology is transforming dairy breeding — allowing welfare traits like lameness resistance, udder health and longevity to be incorporated into breeding indices alongside production. This represents a welfare opportunity.
Genomic selection for welfare traits represents one of the most powerful long-term welfare interventions available for dairy cattle. Unlike management changes that require individual farm adoption, genetic improvement is heritable and cumulative — welfare gains accumulate across generations. Including lameness resistance, mastitis resistance and longevity in selection indices alongside milk yield and fertility progressively shifts the entire dairy population toward better welfare genetics. Farmer adoption of welfare-focused bull selection is growing but economic pressures still prioritise production over welfare traits in selection decisions. Industry-level agreements to include minimum welfare trait weighting in bull indices — as now exists in UK's PLI (Profitable Lifetime Index) — are the most scalable welfare intervention in dairy breeding.