Aparicio Arnay, MaríaYeste Vizcaíno, NataliaSoria, NereaCambra, JorgeIsabel Redondo, BeatrizPiñeiro, CarlosGonzalez Bulnes, Antonio2025-03-282025-03-282025Aparicio-Arnay, M., Yeste-Vizcaíno, N., Soria, N., Cambra, J., Isabel, B., Piñeiro, C., & Gonzalez-Bulnes, A. (2025). Effects of Precision Feeding on Economic and Productive Yields of Hyperprolific Lactating Sows Allocated at Different Farrowing Pens. Animals : an open access journal from MDPI, 15(5), 763. https://doi.org/10.3390/ani1505076310.3390/ani15050763https://hdl.handle.net/20.500.14352/119033Author Contributions: Conceptualization: M.A.-A., N.Y.-V., C.P., B.I. and A.G.-B.; methodology, M.A.-A., N.Y.-V., N.S., J.C. and A.G.-B.; formal analysis, M.A.-A., N.Y.-V. and A.G.-B.; investigation, M.A.-A., N.Y.-V., N.S., J.C., C.P., B.I. and A.G.-B.; writing—original draft preparation, M.A.-A. and A.G.-B.; writing—review and editing, N.Y.-V., N.S., J.C., C.P. and B.I. All authors have read and agreed to the published version of the manuscript.The results obtained using precision feeding in maternities (electronic sow feeders, ESFs) may be affected by the type of farrowing pen, as the design of the pen may modify the behavior of the sows. Hence, the aim of the present study was to determine the effects and possible interactions of electronic feeding systems in different types of farrowing pens (traditional, socialization and loose housing pens) on the productive and economic yields of lactating hyperprolific sows under commercial farm conditions. The results showed an overall lower feed disappearance in sows fed with ESFs and, consequently, a lower amount of feed per weaned piglet and per kg of weaned piglet, with evidence of improved welfare and no negative effects on body weight, condition at weaning or reproductive yields in the following cycle. These effects were, however, modulated by the type of pen and the type of bawl feeder; this finding highlights the need for improvement in the design of facilities and especially feeders to allow the sow a better use of available feedengAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/journal article2076-2615https://doi.org/10.3390/ani1505076340076046open access636.082.4Farrowing penLactationNutritionPrecision feedingSwineProducción animal3104 Producción Animal