Litter size isn’t only about the sow 
New PIC analysis shows the AI boar (“service sire”) can have a small but measurable impact on piglets born alive—an effect that becomes usable with big, well-corrected datasets. Using ~80,000 litters, ~40,000 sows and ~1,600 boars (2020–2024), PIC found up to ~2% differences in liveborn piglets linked to sire lines—small, but valuable when applied systematically in breeding. 
Read more here:The sire effect on litter size: small, but usable for breeding When talking about litter size in practice, the sow is the focus – rightly so. Maternal line genetics, body condition,...
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