Farm Animal Behavioural Needs: Natural Behaviour Expression in Production Systems

Understanding natural behavioural repertoires of farm animals is fundamental to designing housing systems that allow adequate welfare expression.

Key Facts

Behavioural need theory posits that some behaviours are so strongly motivated that animals perform them even without appropriate stimuli
Laying hens show vacuum dust bathing on wire floors demonstrating that the motivation persists without suitable substrate
Sows in farrowing crates perform nest-building movements against bare floors demonstrating the strength of nesting motivation
Research measuring motivation strength through consumer demand theory has quantified which needs matter most to animals
The Five Domains framework incorporates behavioural interaction as a core welfare domain
Natural behaviour expression is now accepted as a welfare indicator in most validated farm animal welfare assessment schemes

Welfare Considerations

Behavioural need science has provided the theoretical and empirical foundation for important welfare improvements in farm animal production. Demonstrating that animals work hard to perform certain behaviours shows these are necessities not luxuries. This evidence has driven housing system reform from battery cages to systems allowing nesting, rooting material for pigs, and pasture access for dairy cattle.

What You Can Do

Support welfare research measuring behavioural motivation strength in farm animal species
Advocate for welfare regulations requiring adequate behavioural expression for each farmed species
Choose products from systems certified to allow natural behaviour expression
Share the science of behavioural needs with people questioning whether housing welfare concerns are evidence-based