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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 La Estanzuela; INIA Las Brujas. |
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Fecha : |
05/11/2014 |
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Actualizado : |
06/02/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
GARCIA, J.; PIÑEIRO, G.; ARANA, S.; SANTIÑAQUE, F.H. |
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Afiliación : |
JAIME ANTONIO GARCIA RADICH, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; G. PIÑEIRO, IFEVA/Cátedra de Ecología, Facultad de Agronomía, UBA/CONICET, Buenos Aires, Argentina; S. ARANA, Facultad de Agronomía, EEMAC, Paysandú, Uruguay; F.H. SANTIÑAQUE, Facultad de Agronomía, EEMAC, Paysandú, Uruguay. |
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Título : |
Moisture deficit and defoliation effects on white clover yield and demography. |
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Fecha de publicación : |
2010 |
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Fuente / Imprenta : |
Crop Science, 2010, v. 50, no.5, p. 2009-2020. |
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ISSN : |
0011-183X |
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DOI : |
10.2135/cropsci2009.10.0614 |
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Idioma : |
Inglés |
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Notas : |
Article history: Published online 16 June 2010. / Published September, 2010. |
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Contenido : |
ABSTRACT.
Moisture stress and high temperatures during the summer are major factors limiting white clover (Trifolium repens L.) productivity in Uruguay. Our objective was to determine the influence of irrigation and defoliation on the growth of white clover. Two white clover cultivars were sown with tall fescue [Schedonorus arundinaceus (Schreb.) Dumort = Lolium arundinaceum (Schreb.) Darbysh.] and subjected to three defoliation regimes with and without low volume irrigations during the summer. Dry matter (DM) yield, botanical composition, number of stolons, and volunteer seedlings were recorded for 3 yr. Irrigation was the main factor affecting clover growth. Clover yields under irrigation were 5.0, 7.4, and 6.9 Mg DM ha-1 in the first, second, and third year compared with 3.0, 5.1, and 1.6 Mg DM ha-1 for the same years in the nonirrigated swards. Defoliation frequency did not affect pasture yields in the nonirrigated swards but the more frequent defoliation produced higher yields under irrigation after the second year. Deferring defoliation during summer did not improve clover yield or persistence. Stolons increased during autumn and winter and decreased in spring and summer. White clover declined after the second summer in the nonirrigated swards while irrigation maintained good clover stand and yield. Profuse seedlings emergences were observed but only 1% survived, suggesting that they were not a reliable mechanism for persistence. Successful reseeding occurred only at the end of the experiment after a severe drought followed by a long wet season.
© Crop Science Society of America. MenosABSTRACT.
Moisture stress and high temperatures during the summer are major factors limiting white clover (Trifolium repens L.) productivity in Uruguay. Our objective was to determine the influence of irrigation and defoliation on the growth of white clover. Two white clover cultivars were sown with tall fescue [Schedonorus arundinaceus (Schreb.) Dumort = Lolium arundinaceum (Schreb.) Darbysh.] and subjected to three defoliation regimes with and without low volume irrigations during the summer. Dry matter (DM) yield, botanical composition, number of stolons, and volunteer seedlings were recorded for 3 yr. Irrigation was the main factor affecting clover growth. Clover yields under irrigation were 5.0, 7.4, and 6.9 Mg DM ha-1 in the first, second, and third year compared with 3.0, 5.1, and 1.6 Mg DM ha-1 for the same years in the nonirrigated swards. Defoliation frequency did not affect pasture yields in the nonirrigated swards but the more frequent defoliation produced higher yields under irrigation after the second year. Deferring defoliation during summer did not improve clover yield or persistence. Stolons increased during autumn and winter and decreased in spring and summer. White clover declined after the second summer in the nonirrigated swards while irrigation maintained good clover stand and yield. Profuse seedlings emergences were observed but only 1% survived, suggesting that they were not a reliable mechanism for persistence. Successful reseeding occurred only at ... Presentar Todo |
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Palabras claves : |
DEFOLIACIÓN; TRIFOLIUM REPENS. |
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Thesagro : |
ESTRÉS HIDRICO; MATERIA SECA; PASTURAS; TREBOL BLANCO; URUGUAY. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 02442naa a2200277 a 4500
001 1051304
005 2020-02-06
008 2010 bl uuuu u00u1 u #d
022 $a0011-183X
024 7 $a10.2135/cropsci2009.10.0614$2DOI
100 1 $aGARCIA, J.
245 $aMoisture deficit and defoliation effects on white clover yield and demography.$h[electronic resource]
260 $c2010
500 $aArticle history: Published online 16 June 2010. / Published September, 2010.
520 $aABSTRACT. Moisture stress and high temperatures during the summer are major factors limiting white clover (Trifolium repens L.) productivity in Uruguay. Our objective was to determine the influence of irrigation and defoliation on the growth of white clover. Two white clover cultivars were sown with tall fescue [Schedonorus arundinaceus (Schreb.) Dumort = Lolium arundinaceum (Schreb.) Darbysh.] and subjected to three defoliation regimes with and without low volume irrigations during the summer. Dry matter (DM) yield, botanical composition, number of stolons, and volunteer seedlings were recorded for 3 yr. Irrigation was the main factor affecting clover growth. Clover yields under irrigation were 5.0, 7.4, and 6.9 Mg DM ha-1 in the first, second, and third year compared with 3.0, 5.1, and 1.6 Mg DM ha-1 for the same years in the nonirrigated swards. Defoliation frequency did not affect pasture yields in the nonirrigated swards but the more frequent defoliation produced higher yields under irrigation after the second year. Deferring defoliation during summer did not improve clover yield or persistence. Stolons increased during autumn and winter and decreased in spring and summer. White clover declined after the second summer in the nonirrigated swards while irrigation maintained good clover stand and yield. Profuse seedlings emergences were observed but only 1% survived, suggesting that they were not a reliable mechanism for persistence. Successful reseeding occurred only at the end of the experiment after a severe drought followed by a long wet season. © Crop Science Society of America.
650 $aESTRÉS HIDRICO
650 $aMATERIA SECA
650 $aPASTURAS
650 $aTREBOL BLANCO
650 $aURUGUAY
653 $aDEFOLIACIÓN
653 $aTRIFOLIUM REPENS
700 1 $aPIÑEIRO, G.
700 1 $aARANA, S.
700 1 $aSANTIÑAQUE, F.H.
773 $tCrop Science, 2010$gv. 50, no.5, p. 2009-2020.
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INIA Las Brujas (LB) |
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| Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha actual : |
08/11/2018 |
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Actualizado : |
13/02/2020 |
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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 : |
DINI, Y.; CAJARVILLE, C.; GERE, J.I.; FERNANDEZ. S.; FRAGA, M.; PRAVIA, M.I.; NAVAJAS, E.; CIGANDA, V. |
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Afiliación : |
YOANA DINI, Departamento de Nutrición Animal, Facultad de Veterinaria, Universidad de la República, San José, Uruguay.; CECILIA CAJARVILLE, Departamento de Nutrición Animal, Facultad de Veterinaria, Universidad de la República, San José, Uruguay.; J I GERE, UIDI, Facultad Regional Buenos Aires, Universidad Tecnológica Nacional. Ciudad Autónoma de Buenos Aires, Argentina.; S FERNANDEZ, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay.; MARTIN FRAGA COTELO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARIA ISABEL PRAVIA NIN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ELLY ANA NAVAJAS VALENTINI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; VERONICA SOLANGE CIGANDA BRASCA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Association between residual feed intake and enteric methane emissions in Hereford steers. |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
Translational Animal Science, v. 3, Issue 1, 1 January 2019, Pages 65-72. Doi: https://doi.10.1093/tas/txy111. |
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DOI : |
10.1093/tas/txy111 |
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Idioma : |
Inglés |
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Notas : |
Article history: Published: 01 October 2018 // Received: 12 September 2018. |
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Contenido : |
Abstract:
The objective of this study was to quantify the emissions of enteric CH4 from growing Hereford steers raised under feedlot conditions based on contrasting levels of residual feed intake (RFI). A repeated measurements experiment was conducted over 20 d to determine CH4 production from two groups of nine Hereford steers, with contrasting RFI values (mean ± SD): low RFI (LRFI group; −0.78 ± 0.22 kg DMI/d) vs. high RFI (HRFI group; 0.83 ± 0.34 kg DMI/d). Steers were selected from a larger contemporary population in which the RFI was evaluated. Steers were maintained under confined conditions with ad libitum access to water and feed, comprising a total mixed ration of 55% sorghum silage, 21% barley silage, 21% corn grain, and 3% protein?mineral?vitamin?premix, provided twice a day. Before the beginning of CH4 measurements, the live weight of both groups of animals was determined, which on average (±SEM) was 357.0 ± 5.11 and 334.0 ± 10.17 kg in the LRFI and HRFI groups, respectively. Methane emission (g/d) was measured on each animal with the sulfur hexafluoride (SF6) tracer technique, during two consecutive periods of 5 d. Individual daily intake and feeding behavior characteristics were measured using a GrowSafe automated feeding system (Model 6000, GrowSafe Systems Ltd, Airdrie, Alberta, Canada). Methanogens in the ruminal content were quantified using quantitative polymerase chain reaction with primers targeting the mcrA gene. Methane emission was near 27% lower in animals with LRFI when expressed in absolute terms (g/d; 26.8%; P = 0.009), by unit of dry matter intake (g CH4/kg; 27.9%, P = 0.021), or as % of gross energy intake (26.7%; P = 0.027). These differences could not be explained by differences in amount of total of methanogens (average = 9.82 log10 units; P = 0.857). However, there were some differences in animal feeding behavior that could explain these differences (e.g., LRFI animals tended to spend less time in feeders). Our results suggest that, in Hereford steers, the selection by RFI values is a promising mitigation strategy for the reduction of the emission of enteric CH4. MenosAbstract:
The objective of this study was to quantify the emissions of enteric CH4 from growing Hereford steers raised under feedlot conditions based on contrasting levels of residual feed intake (RFI). A repeated measurements experiment was conducted over 20 d to determine CH4 production from two groups of nine Hereford steers, with contrasting RFI values (mean ± SD): low RFI (LRFI group; −0.78 ± 0.22 kg DMI/d) vs. high RFI (HRFI group; 0.83 ± 0.34 kg DMI/d). Steers were selected from a larger contemporary population in which the RFI was evaluated. Steers were maintained under confined conditions with ad libitum access to water and feed, comprising a total mixed ration of 55% sorghum silage, 21% barley silage, 21% corn grain, and 3% protein?mineral?vitamin?premix, provided twice a day. Before the beginning of CH4 measurements, the live weight of both groups of animals was determined, which on average (±SEM) was 357.0 ± 5.11 and 334.0 ± 10.17 kg in the LRFI and HRFI groups, respectively. Methane emission (g/d) was measured on each animal with the sulfur hexafluoride (SF6) tracer technique, during two consecutive periods of 5 d. Individual daily intake and feeding behavior characteristics were measured using a GrowSafe automated feeding system (Model 6000, GrowSafe Systems Ltd, Airdrie, Alberta, Canada). Methanogens in the ruminal content were quantified using quantitative polymerase chain reaction with primers targeting the mcrA gene. Methane emission was near 27% lowe... Presentar Todo |
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Palabras claves : |
ENTERIC METHANE; FEEDING BEHAVIOUR; METHANOGENS; RESIDUAL FEED INTAKE; STEERS. |
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Thesagro : |
GASES DE EFECTO INVERNADERO; HEREFORD; NOVILLOS. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 03166naa a2200325 a 4500
001 1059292
005 2020-02-13
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1093/tas/txy111$2DOI
100 1 $aDINI, Y.
245 $aAssociation between residual feed intake and enteric methane emissions in Hereford steers.$h[electronic resource]
260 $c2019
500 $aArticle history: Published: 01 October 2018 // Received: 12 September 2018.
520 $aAbstract: The objective of this study was to quantify the emissions of enteric CH4 from growing Hereford steers raised under feedlot conditions based on contrasting levels of residual feed intake (RFI). A repeated measurements experiment was conducted over 20 d to determine CH4 production from two groups of nine Hereford steers, with contrasting RFI values (mean ± SD): low RFI (LRFI group; −0.78 ± 0.22 kg DMI/d) vs. high RFI (HRFI group; 0.83 ± 0.34 kg DMI/d). Steers were selected from a larger contemporary population in which the RFI was evaluated. Steers were maintained under confined conditions with ad libitum access to water and feed, comprising a total mixed ration of 55% sorghum silage, 21% barley silage, 21% corn grain, and 3% protein?mineral?vitamin?premix, provided twice a day. Before the beginning of CH4 measurements, the live weight of both groups of animals was determined, which on average (±SEM) was 357.0 ± 5.11 and 334.0 ± 10.17 kg in the LRFI and HRFI groups, respectively. Methane emission (g/d) was measured on each animal with the sulfur hexafluoride (SF6) tracer technique, during two consecutive periods of 5 d. Individual daily intake and feeding behavior characteristics were measured using a GrowSafe automated feeding system (Model 6000, GrowSafe Systems Ltd, Airdrie, Alberta, Canada). Methanogens in the ruminal content were quantified using quantitative polymerase chain reaction with primers targeting the mcrA gene. Methane emission was near 27% lower in animals with LRFI when expressed in absolute terms (g/d; 26.8%; P = 0.009), by unit of dry matter intake (g CH4/kg; 27.9%, P = 0.021), or as % of gross energy intake (26.7%; P = 0.027). These differences could not be explained by differences in amount of total of methanogens (average = 9.82 log10 units; P = 0.857). However, there were some differences in animal feeding behavior that could explain these differences (e.g., LRFI animals tended to spend less time in feeders). Our results suggest that, in Hereford steers, the selection by RFI values is a promising mitigation strategy for the reduction of the emission of enteric CH4.
650 $aGASES DE EFECTO INVERNADERO
650 $aHEREFORD
650 $aNOVILLOS
653 $aENTERIC METHANE
653 $aFEEDING BEHAVIOUR
653 $aMETHANOGENS
653 $aRESIDUAL FEED INTAKE
653 $aSTEERS
700 1 $aCAJARVILLE, C.
700 1 $aGERE, J.I.
700 1 $aFERNANDEZ. S.
700 1 $aFRAGA, M.
700 1 $aPRAVIA, M.I.
700 1 $aNAVAJAS, E.
700 1 $aCIGANDA, V.
773 $tTranslational Animal Science$gv. 3, Issue 1, 1 January 2019, Pages 65-72. Doi: https://doi.10.1093/tas/txy111.
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