Study points to peat pellets as promising enrichment for weaned piglets
Bottom line
A new study in Animals tested 8 mm peat pellets as enrichment for weaned piglets and found they outperformed chopped straw on several welfare-related measures. In the trial, 288 piglets were assigned to peat pellets or chopped straw, 12 pigs per pen, with 12 pens per treatment. The paper reports that piglets given peat pellets showed more interaction with the enrichment, fewer ear and tail lesions, and better growth performance during the 28-day post-weaning period. The article was published October 13, 2026, in MDPI’s Animals journal. (mdpi.com)
Why it matters: For veterinary professionals working with swine herds, the finding adds to a growing body of evidence that enrichment can do more than address behavior. Earlier research has linked peat-based enrichment with more exploratory behavior and less aggression after weaning, while a 2026 conference abstract from the University of Helsinki reported lower post-weaning diarrhea and better early growth in piglets given peat pellets. EU guidance also notes that treated peat can function well as enrichment for piglets and weaners, though it should be managed carefully in slatted systems. Taken together, the new paper suggests peat pellets may be a practical option when teams are trying to reduce damaging behaviors without compromising production. (sciencedirect.com)
What to watch: The next question is whether peat pellets hold up across different housing systems, manure-handling setups, and commercial cost structures, and whether follow-up studies confirm health benefits beyond behavior and lesions. (food.ec.europa.eu)
A new Animals study is putting peat pellets on the radar as a welfare tool for weaned piglets. The October 13, 2026 paper, “Peat Pellets as Enrichment Material for Weaned Piglets,” compared 8 mm peat pellets with chopped straw in 288 piglets and found advantages for peat pellets in enrichment use, lesion outcomes, and growth over the 28-day post-weaning period. (mdpi.com)
That matters because weaning remains one of the most stressful points in pig production. Reviews of piglet management and nutrition consistently describe the post-weaning period as a time of impaired growth, intestinal disturbance, and behavior problems as pigs shift from sow’s milk to solid feed and are mixed into new groups. At the same time, enrichment has become a central welfare issue, especially in systems trying to prevent tail biting and other redirected behaviors without creating problems for flooring or slurry systems. (mdpi.com)
In the new study, researchers allocated 288 piglets to one of two edible enrichment treatments: peat pellets or chopped straw. There were 12 weaner pens per treatment and 12 pigs per pen. According to the article summary, the team tracked body weight on days 0, 9, 14, and 28 after weaning, recorded fecal consistency three times weekly, observed behavior on days 8 and 18, and scored ear and tail damage weekly. The published summary indicates that peat pellets increased piglet engagement with the material and improved outcomes versus chopped straw. (mdpi.com)
The findings fit with earlier work on peat-based enrichment. A prior study in Applied Animal Behaviour Science reported that small amounts of peat for suckling and weaner pigs increased exploratory behavior and may reduce aggression after weaning. A 2019 review on pig welfare also described peat as one of several enrichment materials associated with better exploration and lower harmful oral behaviors, while EFSA’s pig welfare opinion cited evidence that enrichment including peat can increase foraging behavior in piglets. (sciencedirect.com)
There’s also emerging evidence that peat pellets may affect more than behavior. A 2026 IPVS conference abstract from University of Helsinki researchers found that piglets given peat pellets from the pre-weaning period through day 64 were heavier at all recorded time points, had lower pre-weaning medical treatment rates, and had less post-weaning diarrhea than controls given sawdust. That abstract evaluated a different protocol and shouldn’t be treated as a direct replication of the Animals paper, but it points in the same direction: peat-based materials may have both enrichment and health-related value during the weaning transition. (researchportal.helsinki.fi)
Why it matters: For veterinarians and technical teams, the practical appeal is that enrichment decisions are rarely just about compliance or optics. They affect behavior, skin and tail lesions, labor, pen hygiene, and sometimes medication use. EU guidance describes treated peat as a material that can work well for piglets and weaners, but also warns that farms need to manage how materials are presented so they don’t interfere with slurry removal in slatted systems. In other words, the welfare upside may be real, but implementation details will determine whether peat pellets are feasible on a given site. (food.ec.europa.eu)
The other takeaway is that the comparator matters. Chopped straw is already a familiar enrichment choice, so a positive result against straw is more meaningful than a result against no enrichment at all. If peat pellets consistently produce more interaction and fewer lesions than straw, veterinarians may have a stronger case for recommending them in herds struggling with post-weaning frustration, ear biting, or tail damage, especially where edible, manipulable materials are preferred. That said, this is still one newly published study, and broader validation in commercial settings will matter before the approach becomes standard. (mdpi.com)
What to watch: Watch for follow-up field studies, cost and manure-system assessments, and whether peat pellets begin showing up in herd protocols as part of broader weaning-health and welfare programs rather than as a standalone enrichment tweak. The most important next step will be replication across production systems and clearer guidance on where peat pellets fit relative to straw, wood, rope, and other commonly used materials. (food.ec.europa.eu)