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Potential to reduce greenhouse gas emissions through different dairy cattle systems in subtropical regions

Carbon (C) footprint of dairy production, expressed in kg C dioxide (CO(2)) equivalents (CO(2)e) (kg energy-corrected milk (ECM))(-1), encompasses emissions from feed production, diet management and total product output. The proportion of pasture on diets may affect all these factors, mainly in subt...

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Autores principales: Ribeiro-Filho, Henrique M. N., Civiero, Maurício, Kebreab, Ermias
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7302504/
https://www.ncbi.nlm.nih.gov/pubmed/32555654
http://dx.doi.org/10.1371/journal.pone.0234687
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author Ribeiro-Filho, Henrique M. N.
Civiero, Maurício
Kebreab, Ermias
author_facet Ribeiro-Filho, Henrique M. N.
Civiero, Maurício
Kebreab, Ermias
author_sort Ribeiro-Filho, Henrique M. N.
collection PubMed
description Carbon (C) footprint of dairy production, expressed in kg C dioxide (CO(2)) equivalents (CO(2)e) (kg energy-corrected milk (ECM))(-1), encompasses emissions from feed production, diet management and total product output. The proportion of pasture on diets may affect all these factors, mainly in subtropical climate zones, where cows may access tropical and temperate pastures during warm and cold seasons, respectively. The aim of the study was to assess the C footprint of a dairy system with annual tropical and temperate pastures in a subtropical region. The system boundary included all processes up to the animal farm gate. Feed requirement during the entire life of each cow was based on data recorded from Holstein × Jersey cow herds producing an average of 7,000 kg ECM lactation(-1). The milk production response as consequence of feed strategies (scenarios) was based on results from two experiments (warm and cold seasons) using lactating cows from the same herd. Three scenarios were evaluated: total mixed ration (TMR) ad libitum intake, 75, and 50% of ad libitum TMR intake with access to grazing either a tropical or temperate pasture during lactation periods. Considering IPCC and international literature values to estimate emissions from urine/dung, feed production and electricity, the C footprint was similar between scenarios, averaging 1.06 kg CO(2)e (kg ECM)(-1). Considering factors from studies conducted in subtropical conditions and actual inputs for on-farm feed production, the C footprint decreased 0.04 kg CO(2)e (kg ECM)(-1) in scenarios including pastures compared to ad libitum TMR. Regardless of factors considered, emissions from feed production decreased as the proportion of pasture went up. In conclusion, decreasing TMR intake and including pastures in dairy cow diets in subtropical conditions have the potential to maintain or reduce the C footprint to a small extent.
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spelling pubmed-73025042020-06-19 Potential to reduce greenhouse gas emissions through different dairy cattle systems in subtropical regions Ribeiro-Filho, Henrique M. N. Civiero, Maurício Kebreab, Ermias PLoS One Research Article Carbon (C) footprint of dairy production, expressed in kg C dioxide (CO(2)) equivalents (CO(2)e) (kg energy-corrected milk (ECM))(-1), encompasses emissions from feed production, diet management and total product output. The proportion of pasture on diets may affect all these factors, mainly in subtropical climate zones, where cows may access tropical and temperate pastures during warm and cold seasons, respectively. The aim of the study was to assess the C footprint of a dairy system with annual tropical and temperate pastures in a subtropical region. The system boundary included all processes up to the animal farm gate. Feed requirement during the entire life of each cow was based on data recorded from Holstein × Jersey cow herds producing an average of 7,000 kg ECM lactation(-1). The milk production response as consequence of feed strategies (scenarios) was based on results from two experiments (warm and cold seasons) using lactating cows from the same herd. Three scenarios were evaluated: total mixed ration (TMR) ad libitum intake, 75, and 50% of ad libitum TMR intake with access to grazing either a tropical or temperate pasture during lactation periods. Considering IPCC and international literature values to estimate emissions from urine/dung, feed production and electricity, the C footprint was similar between scenarios, averaging 1.06 kg CO(2)e (kg ECM)(-1). Considering factors from studies conducted in subtropical conditions and actual inputs for on-farm feed production, the C footprint decreased 0.04 kg CO(2)e (kg ECM)(-1) in scenarios including pastures compared to ad libitum TMR. Regardless of factors considered, emissions from feed production decreased as the proportion of pasture went up. In conclusion, decreasing TMR intake and including pastures in dairy cow diets in subtropical conditions have the potential to maintain or reduce the C footprint to a small extent. Public Library of Science 2020-06-18 /pmc/articles/PMC7302504/ /pubmed/32555654 http://dx.doi.org/10.1371/journal.pone.0234687 Text en https://creativecommons.org/publicdomain/zero/1.0/ This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 (https://creativecommons.org/publicdomain/zero/1.0/) public domain dedication.
spellingShingle Research Article
Ribeiro-Filho, Henrique M. N.
Civiero, Maurício
Kebreab, Ermias
Potential to reduce greenhouse gas emissions through different dairy cattle systems in subtropical regions
title Potential to reduce greenhouse gas emissions through different dairy cattle systems in subtropical regions
title_full Potential to reduce greenhouse gas emissions through different dairy cattle systems in subtropical regions
title_fullStr Potential to reduce greenhouse gas emissions through different dairy cattle systems in subtropical regions
title_full_unstemmed Potential to reduce greenhouse gas emissions through different dairy cattle systems in subtropical regions
title_short Potential to reduce greenhouse gas emissions through different dairy cattle systems in subtropical regions
title_sort potential to reduce greenhouse gas emissions through different dairy cattle systems in subtropical regions
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7302504/
https://www.ncbi.nlm.nih.gov/pubmed/32555654
http://dx.doi.org/10.1371/journal.pone.0234687
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