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Reducing pig aggression in group housing

An animal behavior specialist is researching how genetics and management practices can reduce pig aggression in group housing.

Sarah Ison with Michigan State University tells Brownfield legislation in some states including Michigan and Ohio requires phasing out gestation stalls which means sows will be grouped together.  “Regrouping unfamiliar animals is avoided at all costs because those pigs fight, it’s not good for them, their immune system can be compromised and when they’re fighting, they’re not eating, so there’s a reduction in productivity.”

Ison is surveying producers to find out what they do to reduce pig aggression and will be applying the results to improve sow environments and their welfare.  “Sows having three to six maybe litters during their life on the farm, they’re potentially going to have to be regrouped with unfamiliar sows that many times.  Using the knowledge we have about pigs of all stages is really important to try and find out what we can do to reduce this problem.”

She says early findings show mixing litters of piglets at an early age and providing enrichment toys, similar to pet toys, can promote social skills, and providing getaway areas can protect pigs in aggressive environments.

Ison spoke with Brownfield during the recent Michigan Pork Symposium in Lansing.

AUDIO: Interview with Sarah Ison

 

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