Approche expérimentale de deux systèmes de production porcine différenciés par le mode de logement : Contribution à la recherche d’un développement durable.

Abstract : Systemic comparison of two pig production systems differentiated by animal housing conditions, either on slatted floor or on litter bedding : Contribution to a more sustainable development.In the context of sustainable development pig breeders, facing new questions and new issues, ask more diversified and complex questions and need new references on their production systems. To answer to their demand the Chambre d'Agriculture of Brittany has set up a systemic experimental approach. The pig production systems compared in this experiment were built using a participative approach.The definition and prioritization of the objectives was the first step in designing the systems. The social demand was the most important in the choice of the two systems which differ for animal housing, on slatted floor or on litter bedding, and for manure management, as slurry or as solid manure, with expected effects on animal welfare and environment. Management and decision rules were then defined for each system and sub-system. In each system gestating sows were housed either in small groups (4-8 sows) with an individual feeding stall, of in a large group (24 sows) with and automated feeding stall. On slated floor, 11 pigs were housed per post-weaning or fattening pen, with an area per pig corresponding to either the EU regulation or 1/3 more. On litter bedding, 42 pigs were housed per post-weaning or fattening pen with either straw or sawdust as bedding material. Post-weaning piglets were fed dry feed ad libitum in a feeder. Fattening pigs were fed either ad libitum with dry feed or restrictedly with two meals of mash feed per day. Performance and sustainability of the different raising systems were evaluated from the data collected from January 2006 -the creation of the herd- until May 2008. Average animal performances were high and similar for the two systems and the different housing and feeding strategies: 10.9 piglets weaned/litter, 159 days of age at slaughter, 2.50 kg/kg feed conversion ratio during fattening, 2.1% mortality from weaning to slaughter. Last and final summary in the thesis.
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Frédéric Paboeuf. Approche expérimentale de deux systèmes de production porcine différenciés par le mode de logement : Contribution à la recherche d’un développement durable.. Sciences agricoles. AgroParisTech, 2011. Français. ⟨NNT : 2011AGPT0042⟩. ⟨pastel-00736564⟩

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