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Compound- and context-dependent effects of antibiotics on greenhouse gas emissions from livestock.
Danielsson, Rebecca; Lucas, Jane; Dahlberg, Josef; Ramin, Mohammad; Agenäs, Sigrid; Bayat, Ali-Reza; Tapio, Ilma; Hammer, Tobin; Roslin, Tomas.
Afiliação
  • Danielsson R; Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, 75007 Uppsala, Sweden.
  • Lucas J; Department of Soil and Water Systems, University of Idaho, 875 Perimeter Dr, Moscow, ID 83844, USA.
  • Dahlberg J; Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, 75007 Uppsala, Sweden.
  • Ramin M; Department of Agricultural Research for Northern Sweden, Swedish University of Agricultural Sciences, 901 83 Umeå, Sweden.
  • Agenäs S; Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, 75007 Uppsala, Sweden.
  • Bayat AR; Production Systems, Natural Resources Institute Finland, 31600 Jokioinen, Finland.
  • Tapio I; Production Systems, Natural Resources Institute Finland, 31600 Jokioinen, Finland.
  • Hammer T; Department of Ecology and Evolutionary Biology, University of Colorado at Boulder, Boulder, CO 80309, USA.
  • Roslin T; Department of Ecology, Swedish University of Agricultural Sciences, 75651 Uppsala, Sweden.
R Soc Open Sci ; 6(10): 182049, 2019 Oct.
Article em En | MEDLINE | ID: mdl-31824677
ABSTRACT
The use of antibiotics in livestock production may trigger ecosystem disservices, including increased emissions of greenhouse gases. To evaluate this, we conducted two separate animal experiments, administering two widely used antibiotic compounds (benzylpenicillin and tetracycline) to dairy cows over a 4- or 5-day period locally and/or systemically. We then recorded enteric methane production, total gas production from dung decomposing under aerobic versus anaerobic conditions, prokaryotic community composition in rumen and dung, and accompanying changes in nutrient intake, rumen fermentation, and digestibility resulting from antibiotic administration. The focal antibiotics had no detectable effect on gas emissions from enteric fermentation or dung in aerobic conditions, while they decreased total gas production from anaerobic dung. Microbiome-level effects of benzylpenicillin proved markedly different from those previously recorded for tetracycline in dung, and did not differ by the mode of administration (local or systemic). Antibiotic effects on gas production differed substantially between dung maintained under aerobic versus anaerobic conditions and between compounds. These findings demonstrate compound- and context-dependent impacts of antibiotics on methane emissions and underlying processes, and highlight the need for a global synthesis of data on agricultural antibiotic use before understanding their climatic impacts.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Revista: R Soc Open Sci Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Suécia

Texto completo: 1 Base de dados: MEDLINE Idioma: En Revista: R Soc Open Sci Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Suécia