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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha : |
21/02/2014 |
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Actualizado : |
22/02/2014 |
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Autor : |
Aguilar González, C.; Ruz Sánchez, J. |
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Título : |
Modelos de Simulación en Agricultura |
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Fecha de publicación : |
1992 |
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Fuente / Imprenta : |
Santiago (Chile): Pontificia Universidad Católica de Chile, 1992. |
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Páginas : |
54 p. |
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Idioma : |
Español |
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Thesagro : |
AGRICULTURA; ANALISIS ECONOMICO; MODELOS DE SIMULACION; MODELOS MATEMATICOS. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 00488nam a2200169 a 4500
001 1016232
005 2014-02-22
008 1992 bl uuuu u00u1 u #d
100 1 $aAGUILAR GONZÁLEZ, C.
245 $aModelos de Simulación en Agricultura
260 $aSantiago (Chile): Pontificia Universidad Católica de Chile$c1992
300 $a54 p.
650 $aAGRICULTURA
650 $aANALISIS ECONOMICO
650 $aMODELOS DE SIMULACION
650 $aMODELOS MATEMATICOS
700 1 $aRUZ SÁNCHEZ, J.
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Registro original : |
INIA Tacuarembó (TBO) |
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 | Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha actual : |
21/09/2020 |
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Actualizado : |
13/04/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
ZUBIETA, Á.S.;; SAVIAN, J.V.; DE SOUZA FILHO, W.; WALLAU, M.O.; GÓMEZ, A.M.; BINDELLE, J.;; BONNET, O.J.F.; DE FACCIO CARVALHO, P.C. |
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Afiliación : |
Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Brazil.; JEAN VICTOR SAVIAN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Grazing Ecology Research Group, Federal University of Rio Grande do Sul, RS, Brazil.; Agronomy Department, University of Florida, USA.; Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Brazil. // Facultad de Ciencias Agrarias, Departamento de Producción Animal, Universidad Nacional de Colombia, Medellín, Colombia; Precision Livestock and Nutrition Unit, Gembloux Agro-Bio Tech, TERRA, Teaching and Research Centre, University of Liège, Gembloux, Belgium; Grazing Ecology Research Group, Federal University of Rio Grande do Sul, RS, Brazil.; Grazing Ecology Research Group, Federal University of Rio Grande do Sul, RS, Brazil. |
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Título : |
Does grazing management provide opportunities to mitigate methane emissions by ruminants in pastoral ecosystems? (Review). |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Science of the Total Environment, 1 February 2021, Volume 754, Article number 142029. DOI: https://doi-org.proxy.timbo.org.uy/10.1016/j.scitotenv.2020.142029 |
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DOI : |
10.1016/j.scitotenv.2020.142029 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 18 May 2020 // Received in revised form 26 August 2020 // Accepted 26 August 2020 // Available online 31 August 2020 |
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Contenido : |
Agriculture, and livestock production in particular, is criticized for being a contributor to global environmental change, including emissions of greenhouse gases (GHG). Methane (CH4) from grazing ruminants accounts for most of livestock's carbon footprint because a large share of them are reared under suboptimal grazing conditions,
usually resulting in both low herbage intake and animal performance. Consequently, the CH4 quota attributed to animal maintenance is spread across fewor no animal outputs, increasing the CH4 intensity [g CH4/kg live weight (LW) gain or g CH4/kg milk yield]. In this review, the generalized idea relating tropical pastureswith low
quality and intrinsically higher CH4 intensity is challenged by showing evidence that emissions from animals grazing tropical pastures can equal those of temperate grasses. We demonstrate the medium-to-high mitigation potential of some grazing management strategies to mitigate CH4 emissions from grazing ruminants and stress the predominant role that sward canopy structure (e.g., height) has over animal behavioral responses (e.g., intake rate), daily forage intake and resulting CH4 emissions. From this ecological perspective, we identify a grazing management concept aiming to offer the best sward structure that allows animals to optimize their
daily herbage intake, creating opportunities to reduce CH4 intensity.We showthe trade-off between animal performance and CH4 intensity, stressing that mitigation is substantial when grazing management is conducted under light-to-moderate intensities and optimize herbage intake and animal performance. Weconclude that optimizing LW gain of grazing sheep and cattle to a threshold of 0.14 and 0.7 kg/day, respectively, would dramatically reduce CH4 intensity to approximately 0.2 kg CH4/kg LW gain, as observed in some intensive feeding systems. This could represent a mitigation potential of around 55% for livestock commodities in pasture-based systems. Our results offer newinsights to the debate concerning mitigation of environmental impacts of pastoral ecosystems. MenosAgriculture, and livestock production in particular, is criticized for being a contributor to global environmental change, including emissions of greenhouse gases (GHG). Methane (CH4) from grazing ruminants accounts for most of livestock's carbon footprint because a large share of them are reared under suboptimal grazing conditions,
usually resulting in both low herbage intake and animal performance. Consequently, the CH4 quota attributed to animal maintenance is spread across fewor no animal outputs, increasing the CH4 intensity [g CH4/kg live weight (LW) gain or g CH4/kg milk yield]. In this review, the generalized idea relating tropical pastureswith low
quality and intrinsically higher CH4 intensity is challenged by showing evidence that emissions from animals grazing tropical pastures can equal those of temperate grasses. We demonstrate the medium-to-high mitigation potential of some grazing management strategies to mitigate CH4 emissions from grazing ruminants and stress the predominant role that sward canopy structure (e.g., height) has over animal behavioral responses (e.g., intake rate), daily forage intake and resulting CH4 emissions. From this ecological perspective, we identify a grazing management concept aiming to offer the best sward structure that allows animals to optimize their
daily herbage intake, creating opportunities to reduce CH4 intensity.We showthe trade-off between animal performance and CH4 intensity, stressing that mitigation is substantial when g... Presentar Todo |
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Palabras claves : |
ANIMAL PRODUCTION; CARBON FOOTPRINT; CLIMATE SMART LIVESTOCK; EMISSION INTENSITY; GRASSLAND; SWARD STRUCTURE. |
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Asunto categoría : |
P01 Conservación de la naturaleza y recursos de La tierra |
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Marc : |
LEADER 03249naa a2200301 a 4500
001 1061328
005 2021-04-13
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1016/j.scitotenv.2020.142029$2DOI
100 1 $aZUBIETA, Á.S.;
245 $aDoes grazing management provide opportunities to mitigate methane emissions by ruminants in pastoral ecosystems? (Review).$h[electronic resource]
260 $c2020
500 $aArticle history: Received 18 May 2020 // Received in revised form 26 August 2020 // Accepted 26 August 2020 // Available online 31 August 2020
520 $aAgriculture, and livestock production in particular, is criticized for being a contributor to global environmental change, including emissions of greenhouse gases (GHG). Methane (CH4) from grazing ruminants accounts for most of livestock's carbon footprint because a large share of them are reared under suboptimal grazing conditions, usually resulting in both low herbage intake and animal performance. Consequently, the CH4 quota attributed to animal maintenance is spread across fewor no animal outputs, increasing the CH4 intensity [g CH4/kg live weight (LW) gain or g CH4/kg milk yield]. In this review, the generalized idea relating tropical pastureswith low quality and intrinsically higher CH4 intensity is challenged by showing evidence that emissions from animals grazing tropical pastures can equal those of temperate grasses. We demonstrate the medium-to-high mitigation potential of some grazing management strategies to mitigate CH4 emissions from grazing ruminants and stress the predominant role that sward canopy structure (e.g., height) has over animal behavioral responses (e.g., intake rate), daily forage intake and resulting CH4 emissions. From this ecological perspective, we identify a grazing management concept aiming to offer the best sward structure that allows animals to optimize their daily herbage intake, creating opportunities to reduce CH4 intensity.We showthe trade-off between animal performance and CH4 intensity, stressing that mitigation is substantial when grazing management is conducted under light-to-moderate intensities and optimize herbage intake and animal performance. Weconclude that optimizing LW gain of grazing sheep and cattle to a threshold of 0.14 and 0.7 kg/day, respectively, would dramatically reduce CH4 intensity to approximately 0.2 kg CH4/kg LW gain, as observed in some intensive feeding systems. This could represent a mitigation potential of around 55% for livestock commodities in pasture-based systems. Our results offer newinsights to the debate concerning mitigation of environmental impacts of pastoral ecosystems.
653 $aANIMAL PRODUCTION
653 $aCARBON FOOTPRINT
653 $aCLIMATE SMART LIVESTOCK
653 $aEMISSION INTENSITY
653 $aGRASSLAND
653 $aSWARD STRUCTURE
700 1 $aSAVIAN, J.V.
700 1 $aDE SOUZA FILHO, W.
700 1 $aWALLAU, M.O.
700 1 $aGÓMEZ, A.M.
700 1 $aBINDELLE, J.;
700 1 $aBONNET, O.J.F.
700 1 $aDE FACCIO CARVALHO, P.C.
773 $tScience of the Total Environment, 1 February 2021, Volume 754, Article number 142029. DOI: https://doi-org.proxy.timbo.org.uy/10.1016/j.scitotenv.2020.142029
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