Summary

Many producers wonder if boosting vitamin levels in gestating sow diets could improve litter performance and piglet health. It's an appealing idea, especially given ongoing challenges with sow productivity and piglet survival.

Researchers fed 66 sows and gilts either a standard vitamin diet or a high-vitamin diet across two reproductive cycles, tracking litter size, piglet weights, and immunity levels.

Overall, there were no consistent differences between the two groups. A few minor variations appeared, but nothing that held up reliably across both cycles.

The good news? Current industry vitamin practices appear to be doing their job. Producers don't need to invest in higher vitamin premixes expecting a performance boost. That said, researchers suggest more work is needed, particularly looking at vitamin levels across both gestation and lactation, which could open the door to more targeted feeding strategies down the road.