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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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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
23/07/2020 |
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Actualizado : |
23/07/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
TALMÓN, D.; GARCIA-ROCHE, M; MENDOZA, A.; MATTIAUDA, D.A.; CARRIQUIRY, M |
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Afiliación : |
DANIEL TALMÓN, Daniel Talmón Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, 12900 Montevideo, Uruguay; MERCEDES GARCIA-ROCHE, Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, 12900 Montevideo, Uruguay.; ALEJANDRO FRANCISCO MENDOZA AGUIAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DIEGO A MATTIAUDA, Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, 12900 Montevideo, Uruguay; MARIANA CARRIQUIRY, Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, 12900 Montevideo, Uruguay. |
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Título : |
Energy partitioning and energy efficiency of two Holstein genotypes under a mixed pasture-based system during mid and late lactation. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Livestock Science, September 2020, Volume 239, Article 104166. Doi: https://doi.org/10.1016/j.livsci.2020.104166 |
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DOI : |
10.1016/j.livsci.2020.104166 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 28 February 2020; Received in revised form 9 July 2020; Accepted 9 July 2020. Corresponding author:
E-mail address: danieltalmon94@gmail.com (D. Talmón). |
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Contenido : |
Abstract:
The objective was to evaluate the effect of the Holstein genotype (North American Holstein vs. New Zealand Holstein; NAH vs. NZH, respectively) in a pasture-based system on heat production (HP), energy partitioning between maintenance and production (milk and tissue) and energy efficiency during two different stages of lactation. Twenty-eight Holstein dairy cows (14 cows of each genotype) with similar calving date (May 5, 2018 ± 23 days) were managed in a pasture-based system and supplemented with one third of the predicted total dry matter intake as concentrate. Heat production, retained energy in milk and tissue, metabolizable energy intake (MEI) and the proportion of MEI retained in milk + tissue (RE/MEI) were measured at 115 and 192 ± 19 days in milk and residual HP was estimated by the difference between measured HP and predicted HP based on NRC (2001) model according to body weight, body condition score and milk production. The NAH cows were 60 ± 15 kg heavier and produced 4.7 ± 1.0 kg/d more milk with lower percentages of fat and protein than NZH cows. However, there were no differences in fat or protein yield per day between genotypes. Metabolizable energy intake, retained energy in milk and tissue, HP and RE/MEI were not different between genotypes at 115 days in milk. Nevertheless, at 192 days in milk the MEI, HP and residual HP were lower in NZH than NAH, whereas RE/MEI was not different when both genotypes were managed under a pasture-based system with one third of the consumed diet as concentrate. The capacity of NZH cows to maintain the same RE/MEI than NAH cows at 192 days in milk despite of the lower MEI, was due to a lower metabolizable energy requirement for maintenance (853 vs. 729 kJ/body weight0.75 per day for NAH and NZH, respectively). Indeed, the lower energy requirement for maintenance in NZH was associated with a lower fasting heat production since kl were not different between genotypes. Thus, NZH cows could have a lower proportion of their body as protein mass or a lower relative mass of the internal organs involved with digestive and circulatory functions. However, further investigation is necessary to understand the differences in maintenance energy requirements between the Holstein genotypes. MenosAbstract:
The objective was to evaluate the effect of the Holstein genotype (North American Holstein vs. New Zealand Holstein; NAH vs. NZH, respectively) in a pasture-based system on heat production (HP), energy partitioning between maintenance and production (milk and tissue) and energy efficiency during two different stages of lactation. Twenty-eight Holstein dairy cows (14 cows of each genotype) with similar calving date (May 5, 2018 ± 23 days) were managed in a pasture-based system and supplemented with one third of the predicted total dry matter intake as concentrate. Heat production, retained energy in milk and tissue, metabolizable energy intake (MEI) and the proportion of MEI retained in milk + tissue (RE/MEI) were measured at 115 and 192 ± 19 days in milk and residual HP was estimated by the difference between measured HP and predicted HP based on NRC (2001) model according to body weight, body condition score and milk production. The NAH cows were 60 ± 15 kg heavier and produced 4.7 ± 1.0 kg/d more milk with lower percentages of fat and protein than NZH cows. However, there were no differences in fat or protein yield per day between genotypes. Metabolizable energy intake, retained energy in milk and tissue, HP and RE/MEI were not different between genotypes at 115 days in milk. Nevertheless, at 192 days in milk the MEI, HP and residual HP were lower in NZH than NAH, whereas RE/MEI was not different when both genotypes were managed under a pasture-based system with ... Presentar Todo |
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Palabras claves : |
CALORIMETRÍA INDIRECTA; DAIRY CATTLE; ENERGY EXPENDTURE; GASTO DE ENERGÍA; GRAZING SYSTEM; HOLSTEIN-FRIESIAN; INDIRECT CALORIMETRY; SISTEMA DE PASTOREO. |
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Thesagro : |
VACAS LECHERAS. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 03441naa a2200301 a 4500
001 1061235
005 2020-07-23
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1016/j.livsci.2020.104166$2DOI
100 1 $aTALMÓN, D.
245 $aEnergy partitioning and energy efficiency of two Holstein genotypes under a mixed pasture-based system during mid and late lactation.$h[electronic resource]
260 $c2020
500 $aArticle history: Received 28 February 2020; Received in revised form 9 July 2020; Accepted 9 July 2020. Corresponding author: E-mail address: danieltalmon94@gmail.com (D. Talmón).
520 $aAbstract: The objective was to evaluate the effect of the Holstein genotype (North American Holstein vs. New Zealand Holstein; NAH vs. NZH, respectively) in a pasture-based system on heat production (HP), energy partitioning between maintenance and production (milk and tissue) and energy efficiency during two different stages of lactation. Twenty-eight Holstein dairy cows (14 cows of each genotype) with similar calving date (May 5, 2018 ± 23 days) were managed in a pasture-based system and supplemented with one third of the predicted total dry matter intake as concentrate. Heat production, retained energy in milk and tissue, metabolizable energy intake (MEI) and the proportion of MEI retained in milk + tissue (RE/MEI) were measured at 115 and 192 ± 19 days in milk and residual HP was estimated by the difference between measured HP and predicted HP based on NRC (2001) model according to body weight, body condition score and milk production. The NAH cows were 60 ± 15 kg heavier and produced 4.7 ± 1.0 kg/d more milk with lower percentages of fat and protein than NZH cows. However, there were no differences in fat or protein yield per day between genotypes. Metabolizable energy intake, retained energy in milk and tissue, HP and RE/MEI were not different between genotypes at 115 days in milk. Nevertheless, at 192 days in milk the MEI, HP and residual HP were lower in NZH than NAH, whereas RE/MEI was not different when both genotypes were managed under a pasture-based system with one third of the consumed diet as concentrate. The capacity of NZH cows to maintain the same RE/MEI than NAH cows at 192 days in milk despite of the lower MEI, was due to a lower metabolizable energy requirement for maintenance (853 vs. 729 kJ/body weight0.75 per day for NAH and NZH, respectively). Indeed, the lower energy requirement for maintenance in NZH was associated with a lower fasting heat production since kl were not different between genotypes. Thus, NZH cows could have a lower proportion of their body as protein mass or a lower relative mass of the internal organs involved with digestive and circulatory functions. However, further investigation is necessary to understand the differences in maintenance energy requirements between the Holstein genotypes.
650 $aVACAS LECHERAS
653 $aCALORIMETRÍA INDIRECTA
653 $aDAIRY CATTLE
653 $aENERGY EXPENDTURE
653 $aGASTO DE ENERGÍA
653 $aGRAZING SYSTEM
653 $aHOLSTEIN-FRIESIAN
653 $aINDIRECT CALORIMETRY
653 $aSISTEMA DE PASTOREO
700 1 $aGARCIA-ROCHE, M
700 1 $aMENDOZA, A.
700 1 $aMATTIAUDA, D.A.
700 1 $aCARRIQUIRY, M
773 $tLivestock Science, September 2020, Volume 239, Article 104166. Doi: https://doi.org/10.1016/j.livsci.2020.104166
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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 actual : |
29/01/2020 |
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Actualizado : |
23/03/2020 |
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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 : |
KOLMER, J.A.; HERMAN, A.; ORDOÑEZ, M.E.; GERMAN, S.; MORGOUNOV, A.; PRETORIUS, Z.; VISSER, B.; ANISKSTER, Y.; ACEVEDO, M. |
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Afiliación : |
J. A. KOLMER, United States Department of Agriculture - Agricultural Research Service, Cereal Disease Laboratory, St. Paul, MN, United States; A. HERMAN, Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, United States; M. E. ORDOÑEZ, Pontificia Universidad Católica del Ecuador, Quito, Ecuador; SILVIA ELISA GERMAN FAEDO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; A. MORGOUNOV, International Wheat and Maize Improvement Center, Ankara, Turkey; Z. PRETORIUS, University of the Free State, Faculty of Natural and Agricultural Sciences, Bloemfontein, South Africa; B. VISSER, University of the Free State, Faculty of Natural and Agricultural Sciences, Bloemfontein, South Africa; Y. ANIKSTER, Institute for Cereal Crop Improvement, Tel Aviv University, Tel Aviv, Israel; M. ACEVEDO, International Programs-CALS, Cornell University, Ithaca, NY, United States. |
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Título : |
Endemic and panglobal genetic groups, and divergence of host-associated forms in worldwide collections of the wheat leaf rust fungus Puccinia triticina as determined by genotyping by sequencing. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Heredity, 1 March 2020, Volume 124, Issue 3, Pages 397-409. Doi: https://doi.org/10.1038/s41437-019-0288-x |
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ISSN : |
0018-067X |
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DOI : |
10.1038/s41437-019-0288-x |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: 5 September 2019 / Revised: 3 December 2019 / Accepted: 3 December 2019 / Published online: 20 December 2019.
Supplementary information The online version of this article (https://doi.org/10.1038/s41437-019-0288-x) contains supplementary material, which is available to authorized users. |
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Contenido : |
ABSTRACT.
The wheat leaf rust fungus, Puccinia triticina, is found in the major wheat growing regions of the world and is a leading cause of yield loss in wheat. Populations of P. triticina are highly variable for virulence to resistance genes in wheat and adapt quickly to resistance genes in wheat cultivars. The objectives of this study were to determine the genetic relatedness of worldwide collections of P. triticina using restriction site associated genotyping by sequencing. A total of 558 isolates of P. triticina from wheat producing regions in North America, South America, Europe, the Middle East, Ethiopia, Russia, Pakistan, Central Asia, China, New Zealand, and South Africa were characterized at 6745 single nucleotide loci. Isolates were also tested for virulence to 20 near-isogenic lines that differ for leaf rust resistance genes. Populations that were geographically proximal were also more closely related for genotypes. In addition, groups of isolates within regions that varied for genotype were similar to groups from other regions, which indicated past and recent migration across regions. Isolates from tetraploid durum wheat in five different regions were highly related with distinct genotypes compared to isolates from hexaploid common wheat. Based on a molecular clock, isolates from durum wheat found only in Ethiopia were the first to diverge from a common ancestor form of P. triticina that is found on the wild wheat relative Aegilops speltoides, followed by the divergence of isolates found worldwide that are virulent to durum wheat, and then by isolates found on common wheat.
© 2019, The Author(s), under exclusive licence to The Genetics Society. MenosABSTRACT.
The wheat leaf rust fungus, Puccinia triticina, is found in the major wheat growing regions of the world and is a leading cause of yield loss in wheat. Populations of P. triticina are highly variable for virulence to resistance genes in wheat and adapt quickly to resistance genes in wheat cultivars. The objectives of this study were to determine the genetic relatedness of worldwide collections of P. triticina using restriction site associated genotyping by sequencing. A total of 558 isolates of P. triticina from wheat producing regions in North America, South America, Europe, the Middle East, Ethiopia, Russia, Pakistan, Central Asia, China, New Zealand, and South Africa were characterized at 6745 single nucleotide loci. Isolates were also tested for virulence to 20 near-isogenic lines that differ for leaf rust resistance genes. Populations that were geographically proximal were also more closely related for genotypes. In addition, groups of isolates within regions that varied for genotype were similar to groups from other regions, which indicated past and recent migration across regions. Isolates from tetraploid durum wheat in five different regions were highly related with distinct genotypes compared to isolates from hexaploid common wheat. Based on a molecular clock, isolates from durum wheat found only in Ethiopia were the first to diverge from a common ancestor form of P. triticina that is found on the wild wheat relative Aegilops speltoides, followed by the di... Presentar Todo |
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Palabras claves : |
TRITICUM; WHEAT. |
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Thesagro : |
TRIGO. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 02936naa a2200289 a 4500
001 1060708
005 2020-03-23
008 2020 bl uuuu u00u1 u #d
022 $a0018-067X
024 7 $a10.1038/s41437-019-0288-x$2DOI
100 1 $aKOLMER, J.A.
245 $aEndemic and panglobal genetic groups, and divergence of host-associated forms in worldwide collections of the wheat leaf rust fungus Puccinia triticina as determined by genotyping by sequencing.$h[electronic resource]
260 $c2020
500 $aArticle history: Received: 5 September 2019 / Revised: 3 December 2019 / Accepted: 3 December 2019 / Published online: 20 December 2019. Supplementary information The online version of this article (https://doi.org/10.1038/s41437-019-0288-x) contains supplementary material, which is available to authorized users.
520 $aABSTRACT. The wheat leaf rust fungus, Puccinia triticina, is found in the major wheat growing regions of the world and is a leading cause of yield loss in wheat. Populations of P. triticina are highly variable for virulence to resistance genes in wheat and adapt quickly to resistance genes in wheat cultivars. The objectives of this study were to determine the genetic relatedness of worldwide collections of P. triticina using restriction site associated genotyping by sequencing. A total of 558 isolates of P. triticina from wheat producing regions in North America, South America, Europe, the Middle East, Ethiopia, Russia, Pakistan, Central Asia, China, New Zealand, and South Africa were characterized at 6745 single nucleotide loci. Isolates were also tested for virulence to 20 near-isogenic lines that differ for leaf rust resistance genes. Populations that were geographically proximal were also more closely related for genotypes. In addition, groups of isolates within regions that varied for genotype were similar to groups from other regions, which indicated past and recent migration across regions. Isolates from tetraploid durum wheat in five different regions were highly related with distinct genotypes compared to isolates from hexaploid common wheat. Based on a molecular clock, isolates from durum wheat found only in Ethiopia were the first to diverge from a common ancestor form of P. triticina that is found on the wild wheat relative Aegilops speltoides, followed by the divergence of isolates found worldwide that are virulent to durum wheat, and then by isolates found on common wheat. © 2019, The Author(s), under exclusive licence to The Genetics Society.
650 $aTRIGO
653 $aTRITICUM
653 $aWHEAT
700 1 $aHERMAN, A.
700 1 $aORDOÑEZ, M.E.
700 1 $aGERMAN, S.
700 1 $aMORGOUNOV, A.
700 1 $aPRETORIUS, Z.
700 1 $aVISSER, B.
700 1 $aANISKSTER, Y.
700 1 $aACEVEDO, M.
773 $tHeredity, 1 March 2020, Volume 124, Issue 3, Pages 397-409. Doi: https://doi.org/10.1038/s41437-019-0288-x
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