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Effect of three husbandry systems on environmental impact of organic pigs

Rudolph, Gwendolyn; Hörtenhuber, Stefan; Bochicchio, Davide; Butler, Gillian; Brandhofer, Roland; Dippel, Sabine; Dourmad, Jean-Yves; Edwards, Sandra; Früh, Barbara; Meier, Matthias; Prunier, Armelle; Winckler, Christoph; Zollitsch, Werner and Leeb, Christine (2018) Effect of three husbandry systems on environmental impact of organic pigs. Sustainability, p. 3796.

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Document available online at: https://hal.inrae.fr/hal-02621627


Summary

This study examined the environmental impact of the three common organic pig husbandry systems, indoor (n = 24), partly outdoor (n = 30), and outdoor (n = 10), in eight European countries. Global warming (GWP), acidification (AP), and eutrophication potential (EP) was assessed per 1000 kg pig live weight on 64 farrow-to-finish pig production chains (cradle to farm gate). GWP, AP, and EP varied greatly, and the most important source was feed production, followed by housing. GWP did not differ between systems (p = 0.934), but AP in indoor systems and EP in outdoor systems were higher than in partly outdoor systems (p = 0.006 and p = 0.010, respectively). The higher AP in indoor systems can mainly be explained by NH3 arising from manure spreading, while PO4-eq arising from feed consumption and emissions on pasture accounted for the higher EP in outdoor systems. Associations of farm characteristics with (reduced) environmental impacts were mainly found for AP and EP, and included: (Increasing) farm size, numbers of piglets born and weaned per litter, (bought-in) mineral feed, and high-protein by-products, the latter probably connected to beneficial effects of appropriate dietary digestible lysine levels and feed conversion ratio. Increasing carcass weights and dietary cereal proportions were associated with higher environmental impacts. Overall, variation was mostly higher within than between systems, and measures to mitigate environmental impact were identified.


EPrint Type:Journal paper
Keywords:pig (en), organic (en), Global warming (en), acidification (fr), eutrophication potential (fr)
Subjects:"Organics" in general
Research affiliation: France > INRAe - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement
ISSN:ISSN: 2071-1050
DOI:10.3390/su10103796
Related Links:https://hal.inrae.fr/hal-02621627/document
Project ID:HAL-INRAe
Deposited By: PENVERN, Servane
ID Code:41148
Deposited On:12 Aug 2021 10:37
Last Modified:12 Aug 2021 10:37
Document Language:English

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