Authors: Francine DE QUELEN, Etienne LABUSSIERE, Aur?lie WILFART, Florence GARCIA-LAUNAY, Guillaume Nunes, Fabrice Beline, Fabrice Guiziou, Jean-Yves DOURMAD
Download file: https://library.csbe-scgab.ca/docs/meetings/2021/CSBE21400.pdf
Published in: CSBE-SCGAB Technical Conferences » 5th CIGR and AGM Quebec City 2021 » 4th international Symposium on Gas Emissions and Dust from Livestock (EMILI)
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Description: Animal feeding has a major contribution to the environmental impacts (EI) of pig production. Including EI of feed ingredients into the feed formulation constraints has been proposed as a way to reduce the impacts of pig production. The objective of this study was to test the ability of innovative formulation methodologies in growing pigs to reduce the environmental impacts of pig production by an integrated evaluation over the chain of production of effluent to their recycling and valorization.
We compared two different formulation methodologies: least-cost formulation (control diet) and multiobjective (MO) formulation (ecodiet) considering feed cost and environmental impacts calculated by Life Cycle Assessment (LCA). Twelve pigs (40kg initial BW) were housed individually in were housed individually in metabolism cage equipped for collection of excreta, and fed one of the two diets (6 pigs per diet). Following 14 days of adaptation to the diet, total slurry was collected per pig for 7 subsequent days. Collected slurries were characterized (pH, dry matter, organic matter (OM), total carbon, total nitrogen).
At feed level, the ecodiet reduced climate change by 25%, energy demand by 10%, acidification by 17%, eutrophication by 11% and land occupation by 1% in comparison with the control diet. The amount of OM excreted per pig per day was significantly different between treatments (182.7g with the control diet vs 217.6g with the ecodiet). In view of this difference, we will measure the biomethane potential (BMP, L CH4/kg OM) based on the maximum methane-producing capacity of slurry.
Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: 4th international Symposium on Gas Emissions and Dust from Livestock (EMILI) 4 - Mitigation Strategies
Publication type: Presentation
Language 1: en
Rights: Canadian Society for Bioengineering