Réduire la durée de contention de 7 à 3 jours après la mise bas pour des truies logées en bâtiment : quelles conséquences zootechniques et comportementales ?

Abstract : The study was carried out on 32 crossbred sows (LW x LR) kept individually in conventional farrowing crates and then freed 3 (C3) or 7 days (C7) after farrowing. After that time sows and their litters had free access to a small courtyard on fully slatted floor. Two sows and their litters shared the same courtyard (5.3 m²). Reproduction and growth performances were measured on all animals. Behavioural activities and space use was observed on 24 sows and their litters. There was no impact of time of release on the number of crushed piglets per litter (0.63±0.24 for C3 vs. 0.63±0.18 for C7). Sows and piglets released at 3 days post‐partum used the courtyard more progressively than the others released at 7 days. A late release induced stronger behavioural modifications: sows released at 7 days were more often standing and exploring and less often resting than sows released at 3 days. More cross sucklings were observed for sows released at 3 days than for those released at 7 days (+30 points; P<0.001). However, there was no consequence on piglet weight or on daily piglet weight gain. Over the whole lactation period, piglets from the 3 day released sows had more foot injuries (4.9±0.2 for C3 vs. 3.9±0.2 for C7) but these were minor injuries.
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Aude Dubois, Morgan Dupont, Cécilia Houdelier, Sophie Lumineau, Marie-Christine Meunier-Salaün. Réduire la durée de contention de 7 à 3 jours après la mise bas pour des truies logées en bâtiment : quelles conséquences zootechniques et comportementales ?. 44es Journées de la Recherche Porcine, Feb 2012, Paris, France. pp.261-266. ⟨hal-01317999⟩

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