Farm Animal Welfare

Pig Wean-to-Service Interval Welfare

The wean-to-service interval affects both sow welfare and reproductive efficiency, with nutritional and management factors influencing the speed of reproductive recovery.

Key Facts

Sows need to return to oestrus quickly after weaning to maintain reproductive efficiency
Body condition at weaning predicts wean-to-service interval and conception rate
Flushing with high energy diet after weaning accelerates oestrus return
Extended WSI increases the proportion of sow life spent unproductively
Poor WSI often reflects inadequate lactation nutrition causing excessive body condition loss

Welfare Considerations

Wean-to-service interval management affects sow welfare through its relationship to overall body condition and metabolic state during the reproductive cycle. Proactive nutritional management that prevents excessive lactation weight loss protects both welfare and reproductive performance.

What You Can Do

Monitor sow body condition at weaning and adjust post-weaning nutrition accordingly
Advocate for sow welfare standards that include body condition management requirements
Support pig research into optimal nutritional strategies for reproductive welfare