Farm Animal Welfare

Pig Wean-to-Service Interval Welfare

The wean-to-service interval in sows affects both sow welfare and subsequent reproductive performance - nutrition during lactation is key.

Key Facts

Short wean-to-service intervals correlate with better overall sow welfare status
Sows with excessive body condition loss during lactation show longer wean-to-service intervals
Nutritional support during peak lactation maintains condition and reproductive recovery
High-yielding modern sows are at greatest risk of excessive lactation catabolism
Monitoring back fat at weaning predicts subsequent reproductive performance

Welfare Considerations

Excessive body condition loss during lactation represents a welfare failure for sows - indicating inadequate nutritional support during a period of extreme metabolic demand. Targeted nutrition strategies that maintain condition protect both sow welfare and reproductive efficiency.

What You Can Do

Advocate for sow body condition monitoring at weaning as a welfare indicator
Support research into nutritional strategies for high-yielding modern sow genetics
Engage with breed companies about lactation nutrition requirements in modern sow genetics