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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
28/02/2024 |
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Actualizado : |
28/02/2024 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
GONZÁLEZ, M.; RESQUÍN, F.; BALMELLI, G. |
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Afiliación : |
MILENA GONZÁLEZ CHAVEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOSE FERNANDO RESQUIN PEREZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GUSTAVO DANIEL BALMELLI HERNANDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Estimation of genetic parameters for productive traits in Eucalyptus tereticornis and implications for breeding. [Estimación de parámetros genéticos para características productivas en Eucalyptus tereticornis e implicancias en el mejoramiento genético.]. |
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Fecha de publicación : |
2023 |
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Fuente / Imprenta : |
Bosque (Valdivia). 2023, 44(3): 493-502. http://doi.org/10.4067/S0717-92002023000300493 -- OPEN ACCESS. |
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ISSN : |
0304-8799 (print); e-ISSN 0717-9200 |
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DOI : |
10.4067/S0717-92002023000300493 |
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Idioma : |
Inglés |
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Notas : |
Article history: Recibido 10 April 2022; Aceptado 07 July 2023. -- Correspondence: Balmelli, G.; Instituto Nacional de Investigación Agropecuaria (INIA), Programa de Producción Forestal, Estación Experimental INIA Tacuarembó, Tacuarembó, Uruguay; email:gbalmelli@inia.org.uy --
Document type: Article - Gold Open Access. -- Publisher: Universidad Austral de Chile. -- Funding: The funding of this work came from INIA Uruguay. -- |
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Contenido : |
ABSTRACT.- Eucalyptus tereticornis exhibits adaptation to a wide range of soils and environments, making it suitable for various protective and productive purposes throughout the territory of Uruguay. Due to the absence of a locally improved seed source, INIA began a tree breeding program in 2007 using genetic material from two sources: the natural distribution area of the species and local plantations. The performance of the genetic pool was evaluated at different sites over a nine-year growth period. The objectives of this study were to estimate genetic parameters (heritability, genetic correlations, and genotype-by-environment interaction) for growth and stem form traits and to estimate the genetic gains achievable through selection at different ages, in order to guide the breeding strategy for E. tereticornis. The genotype-environment interaction for volume and survival exhibited moderate to low levels, with Type B genetic correlations ranging from 0.68 to 0.82. The combined analysis of the trials revealed that heritability increased with the age of measurement for all traits, with values ranging from low to moderate for growth variables (0.04 - 0.23) and stem form (stem straightness and forking) showing low values (0.05 - 0.12). Genetic correlations between growth traits at different ages and volume at 9 years were positive and high (0.32 - 0.99), while the correlations between stem form (stem straightness and forking) and volume were low to moderate (0.30 - 0.56). The results obtained suggest that it is possible establish a single breeding unit and that through early selection, genetic gains can be maximized, evaluation costs reduced, and improved seed obtained in a shorter timeframe. © 2023, Universidad Austral de Chile. All rights reserved. .-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- RESUMEN.- Eucalyptus tereticornis se adapta a una amplia variedad de suelos y ambientes, utilizado en todo el territorio uruguayo con fines protectores y productivos. Dada la inexistencia de una fuente de semilla localmente mejorada, en 2007 el INIA inició un programa de mejoramiento a partir de dos fuentes genéticas: el área de distribución natural y las plantaciones locales. Se evaluó el desempeño genético en diferentes sitios hasta el noveno año de crecimiento. Los objetivos de este estudio fueron: estimar los parámetros genéticos para las variables de crecimiento y forma del fuste, y estimar las ganancias genéticas esperadas mediante selección a diferentes edades. La interacción genotipo por medio ambiente para volumen y supervivencia fue de moderada a baja (correlaciones Tipo B entre 0,68 a 0,82). El análisis conjunto de los ensayos mostró que la heredabilidad aumentó con la edad de medición para todas las características, con valores bajos a moderados para las variables de crecimiento (0,04 a 0,23) y valores bajos (0,05 a 0,12) para la forma del fuste (rectitud y bifurcación). Las correlaciones genéticas entre las características de crecimiento a diferentes edades y el volumen a los 9 años fueron positivas y altas (0,32 a 0,99) mientras que las correlaciones entre la forma del fuste (rectitud y bifurcación) y el volumen fueron bajas a moderadas (0,30 a 0,56). Los resultados obtenidos sugieren que es posible manejar una sola unidad de mejoramiento y a través de la selección temprana maximizar las ganancias genéticas, reducir costos de evaluación y obtener semilla mejorada en menor tiempo. MenosABSTRACT.- Eucalyptus tereticornis exhibits adaptation to a wide range of soils and environments, making it suitable for various protective and productive purposes throughout the territory of Uruguay. Due to the absence of a locally improved seed source, INIA began a tree breeding program in 2007 using genetic material from two sources: the natural distribution area of the species and local plantations. The performance of the genetic pool was evaluated at different sites over a nine-year growth period. The objectives of this study were to estimate genetic parameters (heritability, genetic correlations, and genotype-by-environment interaction) for growth and stem form traits and to estimate the genetic gains achievable through selection at different ages, in order to guide the breeding strategy for E. tereticornis. The genotype-environment interaction for volume and survival exhibited moderate to low levels, with Type B genetic correlations ranging from 0.68 to 0.82. The combined analysis of the trials revealed that heritability increased with the age of measurement for all traits, with values ranging from low to moderate for growth variables (0.04 - 0.23) and stem form (stem straightness and forking) showing low values (0.05 - 0.12). Genetic correlations between growth traits at different ages and volume at 9 years were positive and high (0.32 - 0.99), while the correlations between stem form (stem straightness and forking) and volume were low to moderate (0.30 - 0.56). The ... Presentar Todo |
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Palabras claves : |
Correlaciones genéticas; Early selection; Ganancia genética; Genetic correlations; Genetic gain; Heredabilidad; Heritability; Partnership for the goals - Goal 17; Selección temprana; SISTEMA FORESTAL - INIA; Sustainable Development Goals (SDGs). |
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Asunto categoría : |
K01 Ciencias forestales - Aspectos generales |
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URL : |
https://www.scielo.cl/pdf/bosque/v44n3/0717-9200-bosque-44-03-493.pdf
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Marc : |
LEADER 05098naa a2200313 a 4500
001 1064477
005 2024-02-28
008 2023 bl uuuu u00u1 u #d
022 $a0304-8799 (print); e-ISSN 0717-9200
024 7 $a10.4067/S0717-92002023000300493$2DOI
100 1 $aGONZÁLEZ, M.
245 $aEstimation of genetic parameters for productive traits in Eucalyptus tereticornis and implications for breeding. [Estimación de parámetros genéticos para características productivas en Eucalyptus tereticornis e implicancias en el mejoramiento genético.].$h[electronic resource]
260 $c2023
500 $aArticle history: Recibido 10 April 2022; Aceptado 07 July 2023. -- Correspondence: Balmelli, G.; Instituto Nacional de Investigación Agropecuaria (INIA), Programa de Producción Forestal, Estación Experimental INIA Tacuarembó, Tacuarembó, Uruguay; email:gbalmelli@inia.org.uy -- Document type: Article - Gold Open Access. -- Publisher: Universidad Austral de Chile. -- Funding: The funding of this work came from INIA Uruguay. --
520 $aABSTRACT.- Eucalyptus tereticornis exhibits adaptation to a wide range of soils and environments, making it suitable for various protective and productive purposes throughout the territory of Uruguay. Due to the absence of a locally improved seed source, INIA began a tree breeding program in 2007 using genetic material from two sources: the natural distribution area of the species and local plantations. The performance of the genetic pool was evaluated at different sites over a nine-year growth period. The objectives of this study were to estimate genetic parameters (heritability, genetic correlations, and genotype-by-environment interaction) for growth and stem form traits and to estimate the genetic gains achievable through selection at different ages, in order to guide the breeding strategy for E. tereticornis. The genotype-environment interaction for volume and survival exhibited moderate to low levels, with Type B genetic correlations ranging from 0.68 to 0.82. The combined analysis of the trials revealed that heritability increased with the age of measurement for all traits, with values ranging from low to moderate for growth variables (0.04 - 0.23) and stem form (stem straightness and forking) showing low values (0.05 - 0.12). Genetic correlations between growth traits at different ages and volume at 9 years were positive and high (0.32 - 0.99), while the correlations between stem form (stem straightness and forking) and volume were low to moderate (0.30 - 0.56). The results obtained suggest that it is possible establish a single breeding unit and that through early selection, genetic gains can be maximized, evaluation costs reduced, and improved seed obtained in a shorter timeframe. © 2023, Universidad Austral de Chile. All rights reserved. .-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- RESUMEN.- Eucalyptus tereticornis se adapta a una amplia variedad de suelos y ambientes, utilizado en todo el territorio uruguayo con fines protectores y productivos. Dada la inexistencia de una fuente de semilla localmente mejorada, en 2007 el INIA inició un programa de mejoramiento a partir de dos fuentes genéticas: el área de distribución natural y las plantaciones locales. Se evaluó el desempeño genético en diferentes sitios hasta el noveno año de crecimiento. Los objetivos de este estudio fueron: estimar los parámetros genéticos para las variables de crecimiento y forma del fuste, y estimar las ganancias genéticas esperadas mediante selección a diferentes edades. La interacción genotipo por medio ambiente para volumen y supervivencia fue de moderada a baja (correlaciones Tipo B entre 0,68 a 0,82). El análisis conjunto de los ensayos mostró que la heredabilidad aumentó con la edad de medición para todas las características, con valores bajos a moderados para las variables de crecimiento (0,04 a 0,23) y valores bajos (0,05 a 0,12) para la forma del fuste (rectitud y bifurcación). Las correlaciones genéticas entre las características de crecimiento a diferentes edades y el volumen a los 9 años fueron positivas y altas (0,32 a 0,99) mientras que las correlaciones entre la forma del fuste (rectitud y bifurcación) y el volumen fueron bajas a moderadas (0,30 a 0,56). Los resultados obtenidos sugieren que es posible manejar una sola unidad de mejoramiento y a través de la selección temprana maximizar las ganancias genéticas, reducir costos de evaluación y obtener semilla mejorada en menor tiempo.
653 $aCorrelaciones genéticas
653 $aEarly selection
653 $aGanancia genética
653 $aGenetic correlations
653 $aGenetic gain
653 $aHeredabilidad
653 $aHeritability
653 $aPartnership for the goals - Goal 17
653 $aSelección temprana
653 $aSISTEMA FORESTAL - INIA
653 $aSustainable Development Goals (SDGs)
700 1 $aRESQUÍN, F.
700 1 $aBALMELLI, G.
773 $tBosque (Valdivia). 2023, 44(3): 493-502. http://doi.org/10.4067/S0717-92002023000300493 -- OPEN ACCESS.
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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 : |
05/04/2019 |
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Actualizado : |
15/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
-- - -- |
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Autor : |
HERD, R. M.; VELAZCO, J.I.; SMITH, H.; ARTHUR, P. F.; HINE, B.; ODDY, H.; DOBOS, R. C.; HEGARTY, R. S. |
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Afiliación : |
ROBERT M. HERD, NSW Department of Primary Industries, Livestock Industries Centre. Environmental and Rural Science, University of New England; JOSÉ IGNACIO VELAZCO DE LOS REYES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. Environmental and Rural Science, University of New England.; HELEN SMITH, Local Land Services Agency; PAUL F. ARTHUR, NSW Department of Primary Industries; BRAD HINE, CSIRO Agriculture and Food, F.D McMaster Laboratory; HUTTON ODDY, NSW Department of Primary Industries, Livestock Industries Centre; ROBIN C. DOBOS, NSW Department of Primary Industries, Livestock Industries Centre; ROGER S. HEGARTY, Environmental and Rural Science, University of New England. |
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Título : |
Genetic variation in residual feed intake is associated with body composition, behavior, rumen, heat production, hematology, and immune competence traits in Angus cattle. |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
Journal of Animal Science: 2019, skz077, Corrected Proof, Available online 20 february 2019. In Press. |
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DOI : |
10.1093/jas/skz077 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: 05 November 2018//Revision Received: 04 February 2019// Accepted: 20 February 2019. |
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Contenido : |
This experiment was to evaluate a suite of biological traits likely to be associated with genetic variation in residual feed intake (RFI) in Angus cattle. Twenty nine steers and 30 heifers bred to be divergent in postweaning RFI (RFIp) and that differed in midparent RFIp-EBV (RFIp-EBVmp) by more than 2 kg DMI/d were used in this study. A 1-unit (1 kg DM/d) decrease in RFIp-EBVmp was accompanied by a 0.08 kg (SE = 0.03; P < 0.05) increase in ADG, a 0.58 kg/d (0.17; P < 0.01) decrease in DMI, a 0.89 kg/kg (0.22; P < 0.001) decrease in FCR, and a 0.62 kg/d (0.12; P < 0.001) decrease in feedlot RFI (RFIf). Ultrasonically scanned depths of subcutaneous fat at the rib and rump sites, measured at the start and end of the RFI test, all had strong positive correlations with RFIp-EBVmp, DMI, and RFIf (all r values ?0.5 and P < 0.001). Variation in RFIp-EBVmp was significantly correlated (P < 0.05) with flight speed (r = ?0.32), number of visits to feed bins (r = 0.45), and visits to exhaled-emission monitors (r = ?0.27), as well as the concentrations of propionate (r = ?0.32) and valerate (r = ?0.31) in rumen fluid, white blood cell (r = ?0.51), lymphocyte (r = ?0.43), and neutrophil (r = ?0.31) counts in blood. RFIp-EBVmp was also correlated with the cellular immune response to vaccination (r = 0.25; P < 0.1) and heat production in fasted cattle (r = ?0.46; P < 0.001). Traits that explained significant variation (P < 0.05) in DMI over the RFI test were midtest metabolic-BW (44.7%), rib fat depth at the end of test (an additional 18%), number of feeder visits (additional 5.7%), apparent digestibility of the ration by animals (additional 2.4%) and white blood-cell count (2.1%), and the cellular immune response to vaccine injection (additional 1.1%; P < 0.1), leaving ~23% of the variation in DMI unexplained. The same traits (BW excluded) explained 33%, 12%, 3.6%, 3.7%, and 3.1%, and together explained 57% of the variation in RFIf. This experiment showed that genetic variation in RFI was accompanied by variation in estimated body composition, behavior, rumen, fasted heat production, hematology, and immune competence traits, and that variation in feedlot DMI and RFIf was due to differences in BW, scanned fatness, and many other factors in these cattle fed ad libitum and able to display any innate differences in appetite, temperament, feeding behavior, and activity. MenosThis experiment was to evaluate a suite of biological traits likely to be associated with genetic variation in residual feed intake (RFI) in Angus cattle. Twenty nine steers and 30 heifers bred to be divergent in postweaning RFI (RFIp) and that differed in midparent RFIp-EBV (RFIp-EBVmp) by more than 2 kg DMI/d were used in this study. A 1-unit (1 kg DM/d) decrease in RFIp-EBVmp was accompanied by a 0.08 kg (SE = 0.03; P < 0.05) increase in ADG, a 0.58 kg/d (0.17; P < 0.01) decrease in DMI, a 0.89 kg/kg (0.22; P < 0.001) decrease in FCR, and a 0.62 kg/d (0.12; P < 0.001) decrease in feedlot RFI (RFIf). Ultrasonically scanned depths of subcutaneous fat at the rib and rump sites, measured at the start and end of the RFI test, all had strong positive correlations with RFIp-EBVmp, DMI, and RFIf (all r values ?0.5 and P < 0.001). Variation in RFIp-EBVmp was significantly correlated (P < 0.05) with flight speed (r = ?0.32), number of visits to feed bins (r = 0.45), and visits to exhaled-emission monitors (r = ?0.27), as well as the concentrations of propionate (r = ?0.32) and valerate (r = ?0.31) in rumen fluid, white blood cell (r = ?0.51), lymphocyte (r = ?0.43), and neutrophil (r = ?0.31) counts in blood. RFIp-EBVmp was also correlated with the cellular immune response to vaccination (r = 0.25; P < 0.1) and heat production in fasted cattle (r = ?0.46; P < 0.001). Traits that explained significant variation (P < 0.05) in DMI over the RFI test were midtest metabolic-BW (44.7%), r... Presentar Todo |
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Palabras claves : |
BODY COMPOSITION; CATTLE; DIGESTIBILITY; FEED EFFICIENCY; IMMUNE COMPETENCE. |
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Thesagro : |
PRODUCCIÓN ANIMAL. |
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Asunto categoría : |
L51 Fisiología Animal - Nutrición |
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Marc : |
LEADER 03460naa a2200301 a 4500
001 1059701
005 2019-10-15
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1093/jas/skz077$2DOI
100 1 $aHERD, R. M.
245 $aGenetic variation in residual feed intake is associated with body composition, behavior, rumen, heat production, hematology, and immune competence traits in Angus cattle.$h[electronic resource]
260 $c2019
500 $aArticle history: Received: 05 November 2018//Revision Received: 04 February 2019// Accepted: 20 February 2019.
520 $aThis experiment was to evaluate a suite of biological traits likely to be associated with genetic variation in residual feed intake (RFI) in Angus cattle. Twenty nine steers and 30 heifers bred to be divergent in postweaning RFI (RFIp) and that differed in midparent RFIp-EBV (RFIp-EBVmp) by more than 2 kg DMI/d were used in this study. A 1-unit (1 kg DM/d) decrease in RFIp-EBVmp was accompanied by a 0.08 kg (SE = 0.03; P < 0.05) increase in ADG, a 0.58 kg/d (0.17; P < 0.01) decrease in DMI, a 0.89 kg/kg (0.22; P < 0.001) decrease in FCR, and a 0.62 kg/d (0.12; P < 0.001) decrease in feedlot RFI (RFIf). Ultrasonically scanned depths of subcutaneous fat at the rib and rump sites, measured at the start and end of the RFI test, all had strong positive correlations with RFIp-EBVmp, DMI, and RFIf (all r values ?0.5 and P < 0.001). Variation in RFIp-EBVmp was significantly correlated (P < 0.05) with flight speed (r = ?0.32), number of visits to feed bins (r = 0.45), and visits to exhaled-emission monitors (r = ?0.27), as well as the concentrations of propionate (r = ?0.32) and valerate (r = ?0.31) in rumen fluid, white blood cell (r = ?0.51), lymphocyte (r = ?0.43), and neutrophil (r = ?0.31) counts in blood. RFIp-EBVmp was also correlated with the cellular immune response to vaccination (r = 0.25; P < 0.1) and heat production in fasted cattle (r = ?0.46; P < 0.001). Traits that explained significant variation (P < 0.05) in DMI over the RFI test were midtest metabolic-BW (44.7%), rib fat depth at the end of test (an additional 18%), number of feeder visits (additional 5.7%), apparent digestibility of the ration by animals (additional 2.4%) and white blood-cell count (2.1%), and the cellular immune response to vaccine injection (additional 1.1%; P < 0.1), leaving ~23% of the variation in DMI unexplained. The same traits (BW excluded) explained 33%, 12%, 3.6%, 3.7%, and 3.1%, and together explained 57% of the variation in RFIf. This experiment showed that genetic variation in RFI was accompanied by variation in estimated body composition, behavior, rumen, fasted heat production, hematology, and immune competence traits, and that variation in feedlot DMI and RFIf was due to differences in BW, scanned fatness, and many other factors in these cattle fed ad libitum and able to display any innate differences in appetite, temperament, feeding behavior, and activity.
650 $aPRODUCCIÓN ANIMAL
653 $aBODY COMPOSITION
653 $aCATTLE
653 $aDIGESTIBILITY
653 $aFEED EFFICIENCY
653 $aIMMUNE COMPETENCE
700 1 $aVELAZCO, J.I.
700 1 $aSMITH, H.
700 1 $aARTHUR, P. F.
700 1 $aHINE, B.
700 1 $aODDY, H.
700 1 $aDOBOS, R. C.
700 1 $aHEGARTY, R. S.
773 $tJournal of Animal Science: 2019, skz077, Corrected Proof, Available online 20 february 2019. In Press.
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