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 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
07/02/2023 |
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Actualizado : |
24/04/2023 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
DA CUNHA, L. L.; BREMM, C.; SAVIAN, J.V.; ZUBIETA, Á. S.; ROSSETTO, J.; CARVALHO, P. C. DE F. |
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Afiliación : |
LAIS LEAL DA CUNHA, LAIS LEAL, Grazing Ecology Research Group, Federal University of Rio Grande Do Sul, RS, Porto Alegre, Brazil; CAROLINA BREMM, State Foundation of Agricultural Research, Rua Gonçalves Dias, 570, Bairro Menino Deus, RS, Porto Alegre, Brazil; JEAN VICTOR SAVIAN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ÁNGEL SANCHEZ ZUBIETA, Grazing Ecology Research Group, Federal University of Rio Grande Do Sul, RS, Porto Alegre, Brazil; JUSIANE ROSSETTO, Grazing Ecology Research Group, Federal University of Rio Grande Do Sul, RS, Porto Alegre, Brazil; PAULO CÉSAR DE FACCIO CARVALHO, Grazing Ecology Research Group, Federal University of Rio Grande Do Sul, RS, Porto Alegre, Brazil. |
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Título : |
Relevance of sward structure and forage nutrient contents in explaining methane emissions from grazing beef cattle and sheep. |
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Fecha de publicación : |
2023 |
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Fuente / Imprenta : |
Science of the Total Environment, 2023. Volume 869, Article number 161695. doi: https://doi.org/10.1016/j.scitotenv.2023.161695 |
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ISSN : |
0048-9697 |
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DOI : |
10.1016/j.scitotenv.2023.161695 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 18 March 2022; Received in revised form 30 December 2022; Accepted 15 January 2023; Available online 21 January 2023; To be published 15 April 2023. -- Corresponding author: da Cunha, L.L.; Grazing Ecology Research Group, Department of Forage Plants and Agrometeorology, Faculty of Agronomy, Federal University of Rio Grande Do Sul, Bento Gonçalves Ave., 7712, RS, Porto Alegre, Brazil; email:laiscvet@gmail.com -- Editor: Kuishuang Feng -- |
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Contenido : |
ABSTRACT.- Forage nutrient contents are an important factor explaining the dry matter intake (DMI), average daily gain (ADG), and methane emissions (CH4) of ruminants fed indoors. However, for grazing animals, the forage nutrient contents might be limited in explaining such response variables. We aimed to verify the explanatory power of forage nutrient contents and sward structure on daily intake, performance, and CH4 emissions by sheep and beef cattle grazing different grassland types in southern Brazil. We analyzed data from five grazing trials using sheep and beef cattle grazing on Italian ryegrass (Lolium multiflorum), mixed Italian ryegrass and black oat (Lolium multiflorum + Avena strigosa), pearl millet (Pennisetum americanum), and multispecies native grassland. We used mixed models, including the forage nutrient contents [crude protein (CP), neutral detergent fiber (NDF), and acid detergent fiber (ADF)], sward structure (sward height and herbage mass) and their interactions, as fixed effects and trial, season, methodologies, animal species, grassland type, and paddock, as random effects. The model for DMI (kg DM/LW0.75) had an adjusted coefficient of determination (R2adj) of 71.6 %, where 11.3, 23.1, and 37.2 % of the R2adj were explained by the forage nutrient contents, sward structure, and their interaction, respectively. The ADG (kg/LW0.75) model presented an R2adj of 74.2 %, with 12.5 % explained by forage nutrient contents, 29.3 % by sward structure, and 32.4 % by their interaction. The daily CH4 emission (g/LW0.75) model had a lower adjusted coefficient of determination (R2adj = 47.6 %), with 16.8 % explained by forage nutrient contents and 30.8 % explained by sward structure, but no effect of the interaction. Our results show that in grazing ecosystems, the forage nutrient contents explain a small fraction, and the greater explanatory power for DMI, ADG, and CH4 emissions models is related to sward structure descriptors, such as sward height and herbage mass. Moreover, the interaction between these variables explains most of the variation. In conclusion, forage nutrient contents and sward structure have different influences on DMI, ADG, and CH4 emissions by grazing ruminants. Because of its relevance to daily CH4 emissions, offering an optimal sward structure to grazing animals is a major climate-smart strategy to improve animal production and mitigate CH4 emissions in pastoral ecosystems. © 2023 Elsevier B.V. MenosABSTRACT.- Forage nutrient contents are an important factor explaining the dry matter intake (DMI), average daily gain (ADG), and methane emissions (CH4) of ruminants fed indoors. However, for grazing animals, the forage nutrient contents might be limited in explaining such response variables. We aimed to verify the explanatory power of forage nutrient contents and sward structure on daily intake, performance, and CH4 emissions by sheep and beef cattle grazing different grassland types in southern Brazil. We analyzed data from five grazing trials using sheep and beef cattle grazing on Italian ryegrass (Lolium multiflorum), mixed Italian ryegrass and black oat (Lolium multiflorum + Avena strigosa), pearl millet (Pennisetum americanum), and multispecies native grassland. We used mixed models, including the forage nutrient contents [crude protein (CP), neutral detergent fiber (NDF), and acid detergent fiber (ADF)], sward structure (sward height and herbage mass) and their interactions, as fixed effects and trial, season, methodologies, animal species, grassland type, and paddock, as random effects. The model for DMI (kg DM/LW0.75) had an adjusted coefficient of determination (R2adj) of 71.6 %, where 11.3, 23.1, and 37.2 % of the R2adj were explained by the forage nutrient contents, sward structure, and their interaction, respectively. The ADG (kg/LW0.75) model presented an R2adj of 74.2 %, with 12.5 % explained by forage nutrient contents, 29.3 % by sward structure, and 32.4 % ... Presentar Todo |
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Palabras claves : |
Forage chemical composition; Grasslands; Livestock; Pastoral ecosystems; Sward height. |
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Asunto categoría : |
A50 Investigación agraria |
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Marc : |
LEADER 03850naa a2200277 a 4500
001 1063954
005 2023-04-24
008 2023 bl uuuu u00u1 u #d
022 $a0048-9697
024 7 $a10.1016/j.scitotenv.2023.161695$2DOI
100 1 $aDA CUNHA, L. L.
245 $aRelevance of sward structure and forage nutrient contents in explaining methane emissions from grazing beef cattle and sheep.$h[electronic resource]
260 $c2023
500 $aArticle history: Received 18 March 2022; Received in revised form 30 December 2022; Accepted 15 January 2023; Available online 21 January 2023; To be published 15 April 2023. -- Corresponding author: da Cunha, L.L.; Grazing Ecology Research Group, Department of Forage Plants and Agrometeorology, Faculty of Agronomy, Federal University of Rio Grande Do Sul, Bento Gonçalves Ave., 7712, RS, Porto Alegre, Brazil; email:laiscvet@gmail.com -- Editor: Kuishuang Feng --
520 $aABSTRACT.- Forage nutrient contents are an important factor explaining the dry matter intake (DMI), average daily gain (ADG), and methane emissions (CH4) of ruminants fed indoors. However, for grazing animals, the forage nutrient contents might be limited in explaining such response variables. We aimed to verify the explanatory power of forage nutrient contents and sward structure on daily intake, performance, and CH4 emissions by sheep and beef cattle grazing different grassland types in southern Brazil. We analyzed data from five grazing trials using sheep and beef cattle grazing on Italian ryegrass (Lolium multiflorum), mixed Italian ryegrass and black oat (Lolium multiflorum + Avena strigosa), pearl millet (Pennisetum americanum), and multispecies native grassland. We used mixed models, including the forage nutrient contents [crude protein (CP), neutral detergent fiber (NDF), and acid detergent fiber (ADF)], sward structure (sward height and herbage mass) and their interactions, as fixed effects and trial, season, methodologies, animal species, grassland type, and paddock, as random effects. The model for DMI (kg DM/LW0.75) had an adjusted coefficient of determination (R2adj) of 71.6 %, where 11.3, 23.1, and 37.2 % of the R2adj were explained by the forage nutrient contents, sward structure, and their interaction, respectively. The ADG (kg/LW0.75) model presented an R2adj of 74.2 %, with 12.5 % explained by forage nutrient contents, 29.3 % by sward structure, and 32.4 % by their interaction. The daily CH4 emission (g/LW0.75) model had a lower adjusted coefficient of determination (R2adj = 47.6 %), with 16.8 % explained by forage nutrient contents and 30.8 % explained by sward structure, but no effect of the interaction. Our results show that in grazing ecosystems, the forage nutrient contents explain a small fraction, and the greater explanatory power for DMI, ADG, and CH4 emissions models is related to sward structure descriptors, such as sward height and herbage mass. Moreover, the interaction between these variables explains most of the variation. In conclusion, forage nutrient contents and sward structure have different influences on DMI, ADG, and CH4 emissions by grazing ruminants. Because of its relevance to daily CH4 emissions, offering an optimal sward structure to grazing animals is a major climate-smart strategy to improve animal production and mitigate CH4 emissions in pastoral ecosystems. © 2023 Elsevier B.V.
653 $aForage chemical composition
653 $aGrasslands
653 $aLivestock
653 $aPastoral ecosystems
653 $aSward height
700 1 $aBREMM, C.
700 1 $aSAVIAN, J.V.
700 1 $aZUBIETA, Á. S.
700 1 $aROSSETTO, J.
700 1 $aCARVALHO, P. C. DE F.
773 $tScience of the Total Environment, 2023. Volume 869, Article number 161695. doi: https://doi.org/10.1016/j.scitotenv.2023.161695
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
21/07/2025 |
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Actualizado : |
21/07/2025 |
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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 : |
VILARÓ, M.; REYNO, R.; CONDON, F.; DO CANTO, J.; TRUJILLO, C.; BARRIOS, P.G.; RIVAS, M. |
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Afiliación : |
MARIANA VILARÓ, Centro Universitario Regional del Este, Ruta Nacional No. 9 intersección con Ruta No. 15, Rocha, Uruguay; RAFAEL ALEJANDRO REYNO PODESTA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ORCID: https://orcid.org/0000-0001-9619-8477; FEDERICO CONDON PRIANO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ORCID: https://orcid.org/0000-0002-3374-3607; JAVIER DO CANTO FAGUNDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ORCID: https://orcid.org/0000-0003-2268-5592; CRISTINA TRUJILLO, Facultad de Agronomía, Universidad de La República, Avda. Garzón 780, Montevideo, Uruguay; PABLO GONZÁLEZ BARRIOS, Facultad de Agronomía, Universidad de La República, Avda. Garzón 780, Montevideo, Uruguay; MERCEDES RIVAS, Centro Universitario Regional del Este, Ruta Nacional No. 9 intersección con Ruta No. 15, Rocha, Uruguay; Facultad de Agronomía, Universidad de La República, Avda. Garzón 780, Montevideo, Uruguay. |
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Título : |
New insights into the breeding system of Bromus auleticus (Poaceae): pollination methods and reproductive success. (Research article). |
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Fecha de publicación : |
2025 |
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Fuente / Imprenta : |
Genetic Resources and Crop Evolution, 2025. https://doi.org/10.1007/s10722-025-02505-w -- [Article In Press]. |
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ISSN : |
0925-9864 |
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DOI : |
https://doi.org/10.1007/s10722-025-02505-w |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 29 April 2025; Accepted 26 May 2025; Published online 18 June 2025. -- Corresponding author: M. Vilaró, Centro Universitario Regional del Este, Ruta Nacional No. 9 intersección con Ruta No. 15, Rocha, Uruguay, Email: mvilaro@fagro.edu.uy -- Funding: This work was partially funded by the Comisión
Sectorial de Investigación Científica - CSIC (Sectoral Committee for Scientific Research) of the Universidad de la República (University of the Republic), Centro Universitario Regional del Este - CURE Rocha (Eastern Regional University Centre) and Instituto Nacional de Investigación Agropecuaria - INIA Uruguay (National Institute for Agricultural Research). The first author received financial support from the Graduate Academic Committee (Comisión Académica de Posgrados) of the University of the Republic. -- Supplementary Information: The online version contains supplementary material available at https://doi.org/10.1007/s10722- 025- 02505-w . -- |
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Contenido : |
ABSTRACT.- Bromus auleticus is a perennial grass native to the campos of South America, valued for its persistence, productivity and forage quality. Conservation and breeding efforts are constrained by limited knowledge of its reproductive aspects. Although allogamy and genetic incompatibility have been reported, these traits have not been sufficiently corroborated across multiple populations. This work aimed to determine the reproductive system of B. auleticus, assess the presence of genetic incompatibility and explore the possibility of obtaining recombinants between contrasting ecotypes. Between 2018 and 2022, seed set and germination of seeds obtained with different pollination methods were compared, pollen-pistil interactions and pollen viability analysis were performed and a hybridization technique was developed. Open pollination treatments showed the highest seed set (48.7%) and germination (56.8%) as well as the highest pollen-pistil compatibility. In self-pollination, the average seed set was 3.13%, germination was intermediate (35.8%) and pollen-pistil interactions were mostly partially compatible or not compatible. These results confirmed that the five accessions show genetic incompatibility, although this mechanism is not strict and requires further study. Inter-accession crosses yielded 1.96% seed set, while intra-accession crosses produced 0.46%. Pollen viability was not a limiting factor in seed formation. This study presents the first report of controlled hybridizations among B. auleticus ecotypes from Uruguay and provides a comprehensive description of the techniques employed. These results have implications for conservation strategies, as well as applications in breeding and seed production, particularly for the selection of crosses with high pollen-stigma compatibility and seed set. © The Author(s), under exclusive licence to Springer Nature B.V. 2025. MenosABSTRACT.- Bromus auleticus is a perennial grass native to the campos of South America, valued for its persistence, productivity and forage quality. Conservation and breeding efforts are constrained by limited knowledge of its reproductive aspects. Although allogamy and genetic incompatibility have been reported, these traits have not been sufficiently corroborated across multiple populations. This work aimed to determine the reproductive system of B. auleticus, assess the presence of genetic incompatibility and explore the possibility of obtaining recombinants between contrasting ecotypes. Between 2018 and 2022, seed set and germination of seeds obtained with different pollination methods were compared, pollen-pistil interactions and pollen viability analysis were performed and a hybridization technique was developed. Open pollination treatments showed the highest seed set (48.7%) and germination (56.8%) as well as the highest pollen-pistil compatibility. In self-pollination, the average seed set was 3.13%, germination was intermediate (35.8%) and pollen-pistil interactions were mostly partially compatible or not compatible. These results confirmed that the five accessions show genetic incompatibility, although this mechanism is not strict and requires further study. Inter-accession crosses yielded 1.96% seed set, while intra-accession crosses produced 0.46%. Pollen viability was not a limiting factor in seed formation. This study presents the first report of controlled hyb... Presentar Todo |
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Palabras claves : |
ÁREA DE PASTURAS Y FORRAJES - INIA; Campos; Forage genetic resources; Genetic incompatibility; Hybridization techniques; INIA LA ESTANZUELA; INIA TACUAREMBÓ; Pollen viability; Seed set; SISTEMA AGRÍCOLA-GANADERO - INIA. |
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Asunto categoría : |
F30 Genética vegetal y fitomejoramiento |
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Marc : |
LEADER 04024naa a2200349 a 4500
001 1065301
005 2025-07-21
008 2025 bl uuuu u00u1 u #d
022 $a0925-9864
024 7 $ahttps://doi.org/10.1007/s10722-025-02505-w$2DOI
100 1 $aVILARÓ, M.
245 $aNew insights into the breeding system of Bromus auleticus (Poaceae)$bpollination methods and reproductive success. (Research article).$h[electronic resource]
260 $c2025
500 $aArticle history: Received 29 April 2025; Accepted 26 May 2025; Published online 18 June 2025. -- Corresponding author: M. Vilaró, Centro Universitario Regional del Este, Ruta Nacional No. 9 intersección con Ruta No. 15, Rocha, Uruguay, Email: mvilaro@fagro.edu.uy -- Funding: This work was partially funded by the Comisión Sectorial de Investigación Científica - CSIC (Sectoral Committee for Scientific Research) of the Universidad de la República (University of the Republic), Centro Universitario Regional del Este - CURE Rocha (Eastern Regional University Centre) and Instituto Nacional de Investigación Agropecuaria - INIA Uruguay (National Institute for Agricultural Research). The first author received financial support from the Graduate Academic Committee (Comisión Académica de Posgrados) of the University of the Republic. -- Supplementary Information: The online version contains supplementary material available at https://doi.org/10.1007/s10722- 025- 02505-w . --
520 $aABSTRACT.- Bromus auleticus is a perennial grass native to the campos of South America, valued for its persistence, productivity and forage quality. Conservation and breeding efforts are constrained by limited knowledge of its reproductive aspects. Although allogamy and genetic incompatibility have been reported, these traits have not been sufficiently corroborated across multiple populations. This work aimed to determine the reproductive system of B. auleticus, assess the presence of genetic incompatibility and explore the possibility of obtaining recombinants between contrasting ecotypes. Between 2018 and 2022, seed set and germination of seeds obtained with different pollination methods were compared, pollen-pistil interactions and pollen viability analysis were performed and a hybridization technique was developed. Open pollination treatments showed the highest seed set (48.7%) and germination (56.8%) as well as the highest pollen-pistil compatibility. In self-pollination, the average seed set was 3.13%, germination was intermediate (35.8%) and pollen-pistil interactions were mostly partially compatible or not compatible. These results confirmed that the five accessions show genetic incompatibility, although this mechanism is not strict and requires further study. Inter-accession crosses yielded 1.96% seed set, while intra-accession crosses produced 0.46%. Pollen viability was not a limiting factor in seed formation. This study presents the first report of controlled hybridizations among B. auleticus ecotypes from Uruguay and provides a comprehensive description of the techniques employed. These results have implications for conservation strategies, as well as applications in breeding and seed production, particularly for the selection of crosses with high pollen-stigma compatibility and seed set. © The Author(s), under exclusive licence to Springer Nature B.V. 2025.
653 $aÁREA DE PASTURAS Y FORRAJES - INIA
653 $aCampos
653 $aForage genetic resources
653 $aGenetic incompatibility
653 $aHybridization techniques
653 $aINIA LA ESTANZUELA
653 $aINIA TACUAREMBÓ
653 $aPollen viability
653 $aSeed set
653 $aSISTEMA AGRÍCOLA-GANADERO - INIA
700 1 $aREYNO, R.
700 1 $aCONDON, F.
700 1 $aDO CANTO, J.
700 1 $aTRUJILLO, C.
700 1 $aBARRIOS, P.G.
700 1 $aRIVAS, M.
773 $tGenetic Resources and Crop Evolution, 2025. https://doi.org/10.1007/s10722-025-02505-w -- [Article In Press].
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