Hock burns in broiler chickens are a direct indicator of poor litter quality and welfare. They are measurable, preventable, and used as a regulatory tool in some European countries.
Hock burns are not an inevitable byproduct of chicken farming — they are a management failure with known causes and known solutions. Farms with good litter management, appropriate stocking densities, and well-maintained ventilation systems produce broilers with dramatically lower hock burn scores. The correlation between hock burn prevalence and stocking density makes them a reliable indicator of overall welfare conditions. The fact that slaughterhouse monitoring programs in the EU can track hock burns at population level demonstrates that welfare measurement at scale is achievable. The persistence of high hock burn rates across the industry reflects prioritization of stocking density and production efficiency over animal welfare.