000145679 001__ 145679
000145679 005__ 20241122130823.0
000145679 0247_ $$2doi$$a10.1093/jas/skae225
000145679 0248_ $$2sideral$$a139841
000145679 037__ $$aART-2024-139841
000145679 041__ $$aeng
000145679 100__ $$aLlorens, Berta
000145679 245__ $$aPrecision feeding as a tool to reduce the environmental footprint of pig production systems: a life cycle assessment
000145679 260__ $$c2024
000145679 5060_ $$aAccess copy available to the general public$$fUnrestricted
000145679 5203_ $$aNitrogen and phosphorus excretion are major sources of environmental contamination in growing-finishing pig operations. Nutrient excretion can be reduced by feeding pigs daily-tailored diets to their estimated nutrient requirements using individual precision feeding (IPF) techniques. This study modeled and evaluated the environmental impact of moving from conventional group three-phase feeding (CGF) to IPF systems in Quebec, Canada, using life-cycle assessment with Simapro software. The cradle-to-farm model included inputs and outputs of each sub-phase: raw materials/feedstuffs production, feed mill processing, transport, animal rearing, and manure management. The model was identical for both treatments in all aspects except for the production of feeds and barn and manure emissions in the growing-finishing phases. All feed ingredients originated from Quebec, simulating agricultural practices using real management data from an average farm in Quebec. Based on observed pig growth data, the CGF and IPF systems were compared in the growing-finishing phase. IPF diets were modeled as the blend of two feeds (i.e. A and B), while CGF diets were stablished according to the industry. The evaluated impact categories were global warming potential (GWP), eutrophication potential (EP), and acidification potential (AP). The functional unit was 1 tonne of feed at the feed mill gate and 1 tonne of finished pig live weight at the farm gate. A Monte Carlo analysis determined the uncertainty of the growth performance results. Feeding programs were compared using analysis of variance. Corn was associated with elevated GWP and AP impacts, leading to higher impacts for diets with higher corn content. Feed B, which contained 83% corn, resulted in impacts of 645 kg of CO2-eq., 8.53 kg SO2-eq., and 4.89 kg PO4-eq. Diets with higher EP impact had a higher percentage of soybean meal. Feed A contained 25% of this ingredient and had an impact of 608 kg CO2-eq., 6.98 kg SO2-eq., and 5.57 kg PO4-eq. CGF diets had environmental impacts between those of feeds A and B. Compared to CGF, applying IPF programs during the growing-finishing phase decreased GWP by 7.6%, AP by 16.2% and EP by 13.0%. IPF significantly reduced the environmental impact in all categories through the more efficient use of nutritional resources by pigs. IPF could help to improve the sustainability of growing-finishing pig operations in Quebec and likely other regions using corn and soybean-based diets.
000145679 540__ $$9info:eu-repo/semantics/embargoedAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000145679 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000145679 700__ $$aPomar, Candido
000145679 700__ $$aGoyette, Bernard
000145679 700__ $$aRajagopal, Rajinikanth
000145679 700__ $$aAndretta, Ines
000145679 700__ $$0(orcid)0000-0002-3005-2675$$aLatorre, Maria Angeles$$uUniversidad de Zaragoza
000145679 700__ $$aRemus, Aline
000145679 7102_ $$12008$$2700$$aUniversidad de Zaragoza$$bDpto. Produc.Animal Cienc.Ali.$$cÁrea Producción Animal
000145679 773__ $$g102 (2024), skae225,$$pJ. anim. sci.$$tJournal of Animal Science$$x0021-8812
000145679 8564_ $$s1194260$$uhttps://zaguan.unizar.es/record/145679/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2025-08-08
000145679 8564_ $$s542956$$uhttps://zaguan.unizar.es/record/145679/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2025-08-08
000145679 909CO $$ooai:zaguan.unizar.es:145679$$particulos$$pdriver
000145679 951__ $$a2024-11-22-11:52:29
000145679 980__ $$aARTICLE