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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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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
25/07/2016 |
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Actualizado : |
09/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
VELAZCO, J.I.; HERD, R.M.; COTTLE, D.J.; HEGARTY, R.S. |
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Afiliación : |
JOSÉ IGNACIO VELAZCO DE LOS REYES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. University of New England, Australia.; Department of Primary Industries, Australia.; University of New England, Australia; University of New England, Australia. |
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Título : |
Daily methane emissions and emission intensity of grazing beef cattle genetically divergent for residual feed intake. |
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Fecha de publicación : |
2017 |
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Fuente / Imprenta : |
Animal Production Science, 2017, v. 57, p. 627-635. |
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DOI : |
10.1071/AN15111 |
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Idioma : |
Inglés |
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Notas : |
Article history: Submitted: 27 February 2015 Accepted: 15 January 2016 Published (Preview): 27 May 2016. |
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Contenido : |
Abstract:
As daily methane production (DMP; g CH4/day) is strongly correlated with dry matter intake (DMI), the breeding of cattle that require less feed to achieve a desired rate of average daily gain (ADG) by selection for a low residual feed intake (RFI) can be expected to reduce DMP and also emission intensity (EI; g CH4/kg ADG). An xperiment was conducted to compare DMP and EI of Angus cattle genetically divergent for RFI and 400-day weight (400dWT). In a 6-week grazing study, 64 yearling-age cattle (30 steers, 34 heifers) were grazed on temperate pastures, with heifers and steers grazing separate paddocks. Liveweight (LW) was monitored weekly and DMP of individual cattle was measured by a GreenFeed emission monitoring unit in each paddock. Thirty-nine of the possible 64 animals had emission data recorded for 15 or more days, and only data for these animals were analysed. For these cattle, regression against their mid-parent estimated breeding value (EBV) for post-weaning RFI (RFI-EBV) showed that a lower RFI-EBV was associated with higher LW at the start of experiment. Predicted dry matter intake (pDMI), predicted DMP (pDMP) and measured DMP (mDMP) were all egatively correlated with RFI-EBV (P < 0.05), whereas ADG, EI, predicted CH4 yield (pMY; g CH4/kg DMI) were not correlated with RFI-EBV (P > 0.1). Daily CH4 production was positively correlated with animal LW and ADG (P < 0.05). The associations between ADG and its dependent traits EI and pMY and predicted feed conversion ratio (kg pDMI/kg ADG) were strongly negative (r = ?0.82, ?0.57 and ?0.85, P < 0.001) implying that faster daily growth by cattle was accompanied by lower EI, MY and feed conversion ratio. These results show that cattle genetically divergent for RFI do not necessarily differ in ADG, EI or pMY on pasture and that, if heavier, cattle with lower RFI-EBV can actually have higher DMP while grazing moderate quality pastures. MenosAbstract:
As daily methane production (DMP; g CH4/day) is strongly correlated with dry matter intake (DMI), the breeding of cattle that require less feed to achieve a desired rate of average daily gain (ADG) by selection for a low residual feed intake (RFI) can be expected to reduce DMP and also emission intensity (EI; g CH4/kg ADG). An xperiment was conducted to compare DMP and EI of Angus cattle genetically divergent for RFI and 400-day weight (400dWT). In a 6-week grazing study, 64 yearling-age cattle (30 steers, 34 heifers) were grazed on temperate pastures, with heifers and steers grazing separate paddocks. Liveweight (LW) was monitored weekly and DMP of individual cattle was measured by a GreenFeed emission monitoring unit in each paddock. Thirty-nine of the possible 64 animals had emission data recorded for 15 or more days, and only data for these animals were analysed. For these cattle, regression against their mid-parent estimated breeding value (EBV) for post-weaning RFI (RFI-EBV) showed that a lower RFI-EBV was associated with higher LW at the start of experiment. Predicted dry matter intake (pDMI), predicted DMP (pDMP) and measured DMP (mDMP) were all egatively correlated with RFI-EBV (P < 0.05), whereas ADG, EI, predicted CH4 yield (pMY; g CH4/kg DMI) were not correlated with RFI-EBV (P > 0.1). Daily CH4 production was positively correlated with animal LW and ADG (P < 0.05). The associations between ADG and its dependent traits EI and pMY and predicted feed conv... Presentar Todo |
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Palabras claves : |
CH4; FEED CONSERVATION EFFICIENCY; GRAZING CATTLE; GREENHOUSE GASES; MEASUREMENT; RFI. |
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Thesagro : |
GASES DE EFECTO INVERNADERO; MEDIDAS; METANO; PASTOREO DE GANADO. |
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Asunto categoría : |
T01 Polución |
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Marc : |
LEADER 02893naa a2200301 a 4500
001 1055090
005 2019-10-09
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1071/AN15111$2DOI
100 1 $aVELAZCO, J.I.
245 $aDaily methane emissions and emission intensity of grazing beef cattle genetically divergent for residual feed intake.$h[electronic resource]
260 $c2017
500 $aArticle history: Submitted: 27 February 2015 Accepted: 15 January 2016 Published (Preview): 27 May 2016.
520 $aAbstract: As daily methane production (DMP; g CH4/day) is strongly correlated with dry matter intake (DMI), the breeding of cattle that require less feed to achieve a desired rate of average daily gain (ADG) by selection for a low residual feed intake (RFI) can be expected to reduce DMP and also emission intensity (EI; g CH4/kg ADG). An xperiment was conducted to compare DMP and EI of Angus cattle genetically divergent for RFI and 400-day weight (400dWT). In a 6-week grazing study, 64 yearling-age cattle (30 steers, 34 heifers) were grazed on temperate pastures, with heifers and steers grazing separate paddocks. Liveweight (LW) was monitored weekly and DMP of individual cattle was measured by a GreenFeed emission monitoring unit in each paddock. Thirty-nine of the possible 64 animals had emission data recorded for 15 or more days, and only data for these animals were analysed. For these cattle, regression against their mid-parent estimated breeding value (EBV) for post-weaning RFI (RFI-EBV) showed that a lower RFI-EBV was associated with higher LW at the start of experiment. Predicted dry matter intake (pDMI), predicted DMP (pDMP) and measured DMP (mDMP) were all egatively correlated with RFI-EBV (P < 0.05), whereas ADG, EI, predicted CH4 yield (pMY; g CH4/kg DMI) were not correlated with RFI-EBV (P > 0.1). Daily CH4 production was positively correlated with animal LW and ADG (P < 0.05). The associations between ADG and its dependent traits EI and pMY and predicted feed conversion ratio (kg pDMI/kg ADG) were strongly negative (r = ?0.82, ?0.57 and ?0.85, P < 0.001) implying that faster daily growth by cattle was accompanied by lower EI, MY and feed conversion ratio. These results show that cattle genetically divergent for RFI do not necessarily differ in ADG, EI or pMY on pasture and that, if heavier, cattle with lower RFI-EBV can actually have higher DMP while grazing moderate quality pastures.
650 $aGASES DE EFECTO INVERNADERO
650 $aMEDIDAS
650 $aMETANO
650 $aPASTOREO DE GANADO
653 $aCH4
653 $aFEED CONSERVATION EFFICIENCY
653 $aGRAZING CATTLE
653 $aGREENHOUSE GASES
653 $aMEASUREMENT
653 $aRFI
700 1 $aHERD, R.M.
700 1 $aCOTTLE, D.J.
700 1 $aHEGARTY, R.S.
773 $tAnimal Production Science, 2017$gv. 57, p. 627-635.
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INIA Treinta y Tres (TT) |
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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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