Genetic selection has substantially increased sow prolificity over the past decades. Today, modern sows produce 2 to 4 more piglets per litter, with averages reaching 14 to 16 piglets in many countries. However, these gains in productivity come with new challenges, including reduced sow longevity, impaired fertility, and higher culling and mortality rates.
At the same time, larger litters have not translated into better survival, as piglet mortality continues to rise, generating economic losses. These issues often originate early, starting with gilt selection and preparation for reproductive life. In particular, nutrition of the nulliparous sow is a critical foundation, as diets must support both foetal development and the continued growth of the young sow. Feeding quality at this stage therefore directly influences current performance and future reproductive cycles.
This booklet explores how targeted nutritional strategies can help secure long term sow and litter performance in high prolific systems.

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