Pig Neonatal Welfare and Piglet Mortality

Piglet mortality in the first week of life is one of the highest welfare cost areas in pig production, with crushing by sows, starvation, and hypothermia causing preventable deaths in millions of piglets annually.

Key Facts

Pre-weaning mortality in commercial pig production averages 10-15% of live-born piglets
Crushing by the sow accounts for approximately 50% of pre-weaning deaths in confined systems
Farrowing crates prevent most sow crushing but severely restrict sow movement and natural behavior
Loose farrowing systems that protect piglets while allowing sow movement show comparable mortality with good management
Hypothermia is a major cause of death — piglets have minimal fat reserves and limited thermoregulatory capacity
Colostrum intake within 12 hours is essential for survival — failure to nurse in time is fatal
High-prolificacy genetics in modern sows has increased litter sizes faster than piglet birth weight, increasing mortality risk

Welfare Considerations

Neonatal piglet welfare involves a fundamental welfare conflict: protecting piglets from crushing requires restricting sow movement in ways that compromise her welfare, while allowing sow freedom increases piglet mortality. Intensive systems have resolved this conflict in favor of piglet survival at severe cost to sow welfare in farrowing crates. Welfare-progressive solutions including free-farrowing pens with protective design elements seek to protect both. The genuine challenge of this trade-off should not obscure the fact that many piglet deaths also involve suffering — hypothermia, starvation, and injury from crushing are not instantaneous deaths — making piglet welfare an independent priority alongside sow welfare.

What You Can Do

Support research into free-farrowing system designs that protect both sow and piglet welfare
Advocate for welfare standards that move beyond farrowing crates with adequate transition support
Choose pork from producers using free-farrowing systems that address both sow and piglet welfare
Engage with retailers about their supplier requirements for farrowing system welfare standards
Back producer transition funding making free-farrowing system adoption economically viable