Farm Animals

Broiler Leg Health: Genetics, Management, and Welfare

Leg health problems are one of the most significant welfare issues in broiler chickens. The combination of rapid growth, heavy body weight, and litter conditions creates a perfect storm for lameness.

Key Facts

Around 25% of commercial broilers show detectable lameness before slaughter
Valgus-varus deformity affects up to 10% of some fast-growing breeds
Poor leg health correlates with higher mortality and lower welfare scores
Slower-growing breeds show significantly lower lameness prevalence
Stocking density and litter quality are major management factors affecting leg health
Good gait scoring using the Bristol scale enables objective monitoring

Welfare Considerations

Lame broilers experience chronic pain that reduces their access to feed and water and their ability to express normal behaviours. Lameness in the final weeks before slaughter represents a welfare crisis for affected individuals. Breed selection and management practices that prioritise leg health are among the most impactful interventions available to producers.

What You Can Do

Implement regular gait scoring using the Bristol Gait Scoring system
Consider slower-growing breeds or higher welfare standard breeds
Manage litter quality carefully to prevent footpad dermatitis and hock burns
Avoid stocking densities that increase competition and lying time
Support retailer and certification schemes that require gait score monitoring