“MS-SowPerf+” : a novel tool for reproductive performance assessment in sow replacement

The present study aims to transform the previously published MilkScore prediction model for performance assessment of lactating sows into a practical management tool for application on pig farms. Routinely collected reproductive data, litter birth weights and sow parity number provide the basis for the performance assessment, which is used to derive the replacement recommendation for lactating sows. The developed tool, named MS-SowPerf⁺ (MilkScore-​SowPerformance⁺), comprises three main components: data processing, performance calculation and categorization, and replacement recommendation. Primarily basic performance data are required as input parameters. The formula for calculating the reproductive performance is embedded within the MS-SowPerf⁺, making it straightforward and user-friendly for farmers. The parity-specific assessment considers age-related performance trends, supporting longevity and data-driven replacement decisions. Moreover, the MS-SowPerf⁺ model is designed to be expandable, with potential integration of additional performance parameters such as health data or sows body weight loss, to further optimize performance assessment and replacement recommendations. Overall, the MS-SowPerf⁺ provides a practical and data-driven solution for sow management, with strong potential to evolve into a comprehensive decision-support system as developments in precision livestock farming and on-farm data collection continue to advance.