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Insights into Enteric Methane Emissions in Conventional and Organic Dairy Grazing Systems in Island Regions

2025-05-28Artigo de investigação Acesso aberto
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datacite.subject.fosCiências Naturais::Ciências Biológicas
datacite.subject.sdg15:Proteger a Vida Terrestre
dc.contributor.authorNunes, Hélder
dc.contributor.authorMaduro Dias, cristiana
dc.contributor.authorAbreu, Adriana
dc.contributor.authorSilveira de Borba, Alfredo Emilio
dc.contributor.authorDrumonde Melo, Catarina Alexandra
dc.contributor.editorFailla, Sebastiana
dc.date.accessioned2026-01-26T14:15:41Z
dc.date.available2026-01-26T14:15:41Z
dc.date.issued2025-05-28
dc.description.abstractABSTRACT: Pasture-based dairy systems are a cornerstone of agricultural practices in the Azores, contributing significantly to both the local economy and environmental sustainability. However, the environmental impact of these systems, particularly in terms of methane (CH4) emissions, remains a major challenge, especially given the need to balance productivity with ecological preservation. This study aimed to compare enteric methane emissions, floristic composition, productivity, and nutritional quality between conventional and organic pasture systems in the Azores. Data were collected from representative dairy farms over a 12-month period, with pasture samples analyzed monthly to assess floristic diversity, dry matter productivity, and nutritional quality (crude protein and digestibility). Methane emissions were estimated using the IPCC Tier 2 methodology, incorporating data on animal performance, diet composition, and energy intake to calculate CH4 emissions per cow per year. The results showed that organic pastures had greater floristic diversity (5.10 ± 0.25 species/m2) than conventional pastures (4.00 ± 0.23 species/m2). However, conventional systems exhibited higher dry matter productivity (22.85 g/m2 vs. 15.35 g/m2) and incorporated corn silage, which enhanced digestible energy and reduced methane emissions (81.33 kg CH4/cow/year) compared to organic systems (89.17 kg CH4/cow/year). Although organic pastures had higher crude protein content (20.65%), their lower digestibility contributed to higher methane emissions. This study underscores the trade-offs between environmental sustainability, pasture productivity, and methane mitigation in pasture-based dairy systems, highlighting the need for integrated management approaches that balance ecological and production goals.por
dc.identifier.citationNunes, H. P. B., Maduro Dias, C., Abreu, A., Borba, A., & Melo, C. D. (2025). Insights into enteric methane emissions in conventional and organic dairy grazing systems in island regions. Sustainability, 17(11), 4944. https://doi.org/10.3390/su17114944
dc.identifier.doi10.3390/su17114944
dc.identifier.eissn2071-1050
dc.identifier.urihttp://hdl.handle.net/10400.3/8827
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.relation.hasversionhttps://www.mdpi.com/2071-1050/17/11/4944
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subjectenteric methane
dc.subjectdairy production
dc.subjectorganic farming
dc.subjectconventional systems
dc.subjectAzores
dc.subjectpasture management
dc.titleInsights into Enteric Methane Emissions in Conventional and Organic Dairy Grazing Systems in Island Regionseng
dc.typeresearch article
dspace.entity.typePublication
oaire.citation.endPage15
oaire.citation.issue11
oaire.citation.startPage1
oaire.citation.titleSustainability
oaire.citation.volume17
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameMaduro Dias
person.familyNameSilveira de Borba
person.familyNameDrumonde Melo
person.givenNamecristiana
person.givenNameAlfredo Emilio
person.givenNameCatarina Alexandra
person.identifier.ciencia-idFF15-FAF0-D97C
person.identifier.ciencia-idB218-BDCE-C8CD
person.identifier.ciencia-idD71C-8487-7785
person.identifier.orcid0000-0002-6655-8109
person.identifier.orcid0000-0003-0691-6725
person.identifier.scopus-author-id57296397600
relation.isAuthorOfPublication870a2d20-78c6-470e-8c37-e35c7ad832dd
relation.isAuthorOfPublicationeb1e30b4-9609-40ca-8468-a2eb3eaabb76
relation.isAuthorOfPublication9e2c1e53-8c26-44c6-bacb-415dd42245dd
relation.isAuthorOfPublication.latestForDiscovery870a2d20-78c6-470e-8c37-e35c7ad832dd

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