Straw Bedding for Pigs: A Simple Welfare Improvement with Large Impact

Providing straw bedding to farmed pigs addresses multiple welfare needs simultaneously — rooting, thermoregulation, comfort and play — making it one of the most evidence-based and cost-effective welfare interventions available in pig production.

Key Facts

Straw is the most researched and evidence-supported enrichment material for pigs
Pigs provided with straw show significantly lower rates of tail biting, aggression and stereotypic behaviour
Straw allows expression of rooting and foraging behaviour that pigs are strongly motivated to perform
Straw provides thermal insulation and lying comfort that significantly improves welfare in cold housing conditions
The main barriers to straw use in intensive systems are slurry handling infrastructure and cost
Straw-bedded systems have lower medication use and better animal health outcomes across multiple indicators
Some countries including Sweden and Switzerland have straw requirements embedded in their animal welfare regulations
Research shows that even small amounts of straw — 100 grams per pig per day — significantly reduce tail biting compared to no provision

Welfare Considerations

The evidence for straw as a welfare improvement for pigs is among the strongest in farm animal welfare science. The behaviour it enables — rooting, foraging and nesting — are among the most motivated in the pig behavioural repertoire, and their frustration in barren systems causes the chronic stress and redirected behaviours that characterise poor welfare. Straw provision addresses root causes of tail biting rather than managing consequences through painful tail docking. The fact that most intensive pig production globally occurs without any straw or equivalent enrichment, despite the robust evidence base for its benefits, reflects a systemic subordination of welfare to production economics. Countries that have mandated straw provision demonstrate it is compatible with viable commercial production.

What You Can Do

Support pig welfare certification standards that require straw or equivalent long-fibre enrichment provision
Advocate for regulatory requirements for enrichment material provision in pig farming legislation
Choose pork products from farms using bedded or deep-litter systems that provide appropriate enrichment
Support campaigns opposing tail docking as a substitute for providing enrichment that addresses root causes of tail biting
Raise awareness that the absence of straw in most pig systems is a significant and correctable welfare deficit
Encourage retailers to source from producers committed to providing straw or equivalent enrichment for all pigs