Commercial sows experience multiple pregnancies annually in conditions that cause cumulative welfare costs. Understanding the full reproductive welfare cycle informs more comprehensive welfare assessment.
Commercial sow welfare involves cumulative welfare costs across multiple reproductive cycles. Each pregnancy, parturition, and lactation places metabolic demands on the sow that, when repeated frequently over years, contribute to early culling due to leg problems, prolapse, and reproductive failure. The welfare cost of high reproductive output — multiple litters per year for several years — is rarely calculated explicitly in welfare assessments that focus on housing conditions alone. Weaning causes abrupt mammary engorgement pain and the distress of maternal separation. The relationship between reproductive intensity and welfare is direct — more litters means more welfare costs, while market pressure drives maximum litter frequency. Welfare-oriented breeding programs that balance reproductive output with sow longevity and health reduce cumulative welfare burden.