Effects of divergent lines on feed efficiency and physical activity on lameness and osteochondrosis in growing pigs
| Autor: | Meunier-Salaün, Marie-Christine, Karhapää, M., Siljander-Rasi, H., Cantaloube, Emma, Archimbaud, Lucile, Brossard, Ludovic, Le Floc'h, Nathalie, Boudon, Anne |
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| Přispěvatelé: | ProdInra, Archive Ouverte, Physiologie, Environnement et Génétique pour l'Animal et les Systèmes d'Elevage [Rennes] (PEGASE), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Natural Resources Institute Finland, AGROCAMPUS OUEST-Institut National de la Recherche Agronomique (INRA) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | 52. International Congress of International Society for Applied Ethology (ISAE) 52. International Congress of International Society for Applied Ethology (ISAE), Jul 2018, Charlottetown, Canada. Wageningen Academic Publishers, 2018, Proceedings of the 52nd Congress of the International Society for Applied Ethology. Ethology for health and welfare 52. International Congress of International Society for Applied Ethology (ISAE), Jul 2018, Charlottetown, Canada. Wageningen Academic Publishers, 2018 |
| Popis: | Locomotion disorders have been identified as a significant production disease for growing and finishing pigs, and a sign of reduced animal welfare (EU PROHEALTH project). Amongst them, lameness is a complex problem including animal-based and resources-based causes. Osteochondrosis (OC) is a very frequent disease in pigs, affecting cartilage. The study assessed the occurrence of lameness and OC in two divergent lines of Large-White selected according to a feed efficiency trait (HRFI, LRFI; high or low residual feed intake), submitted to constraints on the physical activity. Two experimental groups of 80 pigs (40 LRFI and 40 HRFI, ratio 1:1 of females and castrated males) were housed on partly slatted flooring in a room equipped withan electronic weighing device allowing pig access to electronic self-feeders, crossing a sorter. Pigs were equipped with ear tags for their individual electronic identification at the sorter and automatic feeders. The identification determined the side of the room to which the animal was directed after the sorter exit, and thus defined the distance to come back to the sorter (short: spontaneous activity, long: increased activity). Three times, at the beginning (wk3), middle (wk7) and end (wk13) of the growing-fattening period, video recordings were made during the 12 h daylight for screening the posture (standing, sitting, lying). Lameness was assessed weekly using a visual gait scoring (lameness score, 0: no, 1: lame). At slaughter, (weight of 100kg, between 21 and 22 wks of age), post-mortem quantification of OC lesions was performed on surfaces of both proximal and distal condyles of the humerus and femur (score 0 no lesion; score 5 severe lesion with loose fragment of cartilage). According to the variables, data were analyzed using a χ2 test or variance analysis with the main factors line, physical activity, sex, replicate and their interactions. The LRFI line showed fewer pigs standing during the daylight period at the three recording times (22.5±0.6 vs 28.3±0.6% of standing pigs during a 30 min interval, P |
| Databáze: | OpenAIRE |
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