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| Registros recuperados : 223 | |
| 25. |  | LEGARRA, A.; AGUILAR, I.; COLLEAU, J.J. Short communication: Methods to compute genomic inbreeding for ungenotyped individuals. Journal of Dairy Science, April 2020, Volume 103, Issue 4, Pages 3363-3367. Doi: https://doi.org/10.3168/jds.2019-17750 Article history: Received October 15, 2019. / Accepted December 18, 2019.
Corresponding author: A. Legarra - email: andres.legarra@inra.fr
This study was partially funded by the INRA (Paris, France) SELGEN funding metaprogram (Project...| Biblioteca(s): INIA Las Brujas. |
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| 27. | | LEGARRA, A.; AGUILAR, I.; MISZTAL, I. Single step methods with a view towards poultry breeding. Volume Species Breeding: Poultry, 324. In: Proceedings of the World Congress on Genetics Applied to Livestock Production, 10., Vancouver, BC, Canada, August 17-22, 2014. p.324. Acknowledgements: This work has been financed by X-Gen and GenSSeq actions from SelGen metaprogram (INRA).| Biblioteca(s): INIA Las Brujas. |
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| 30. | | FRANCO, J.; FEED, O.; AGUILAR, I.; GIMENO, D.; NAVAJAS, E. ¿Afectamos la calidad del producto al cruzar? Calidad de la carne: pH y terneza. ln: INIA Tacuarembó. Seminario de actualización técnica, 23 de agosto, 2002. Cruzamientos en bovinos para carnes: Resultados FPTA 083. Tacuarembó, (Uruguay): INIA; Facultad de Agronomía, 2002. p. 63-67 (INIA Serie Actividades de Difusión ; 295) INIA Tacuarembó; Universidad de la República (Uruguay). Facultad de Agronomía; Universidad de la República (Uruguay). Facultad de Química; Frigorífico Tacuarembó; Universidad de la República (Uruguay). Facultad de Veterinaria; Caja...| Biblioteca(s): INIA Tacuarembó. |
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| 31. | | PRAVIA, M.I.; NAVAJAS, E.; AGUILAR, I.; RAVAGNOLO, O. Alternative models to predict residual feed intake in Hereford breed and effects on their breeding values accuracy. [48] Part 6 - Challenges - resource allocation and genetics of feed intake and efficiency. In: Proceedings of the World Congress on Genetics Applied to Livestock Production (WCGALP), 12., Rotterdam, the Netherlands, 3-8 July 2022. doi: https://doi.org/10.3920/978-90-8686-940-4_48 240-243. Article history: Published online: February 9, 2023 -- Corresponding author: María Isabel Pravia, email: mpravia@inia.org.uy| Biblioteca(s): INIA Las Brujas. |
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| 32. | | MASUDA, Y.; AGUILAR, I.; TSURUTA, S.; MISZTAL, I. Acceleration of computations in AI REML for single-step GBLUP models. Volume Methods and Tools: Statistical methods - linear and nonlinear models (Posters), 703. In: Proceedings of the World Congress on Genetics Applied to Livestock Production, 10., Vancouver, BC, Canada, August 17-22, 2014. p.703.| Biblioteca(s): INIA Las Brujas. |
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| 36. | | FRANCO, J.; FEED, O.; GIMENO, D.; AGUILAR, I.; AVENDAÑO, S. Como cambia el rendimiento carnicero con los cruzamientos: calidad de la canal. ln: INIA Tacuarembó. Seminario de actualización técnica, 23 de agosto, 2002. Cruzamientos en bovinos para carnes: Resultados FPTA 083. Tacuarembó, (Uruguay): INIA; Facultad de Agronomía, 2002. p. 31-37 (INIA Serie Actividades de Difusión ; 295) INIA Tacuarembó; Universidad de la República (Uruguay). Facultad de Agronomía; Universidad de la República (Uruguay). Facultad de Química; Frigorífico Tacuarembó; Universidad de la República (Uruguay). Facultad de Veterinaria; Caja Notarial| Biblioteca(s): INIA Tacuarembó. |
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| 39. | | AGUILAR, I.; MISZTAL, I.; LEGARRA, A.; TSURUTA, S. Efficient computations of genomic relationship matrix and other matrices used in the single-step evaluation. Volume Methods and tools: Software and bioinformatics - Lecture Sessions, 0768. In: Proceedings of the World Congress on Genetics Applied to Livestock Production, 9., Leipzig, Germany, August 1-6, 2010. p. 0768. Acknowledgments: This study was partially funded by the Holstein Association USA Inc. and by AFRI grants 2009-65205-05665 and 2010-65205-20366 from the USDA NIFA Animal Genome Program. The authors thank P.M. VanRaden from Animal...| Biblioteca(s): INIA Las Brujas. |
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| 40. | | BERMANN, M.; MISZTAL, I.; LOURENCO, D.; AGUILAR, I.; LEGARRA, A. Definition of reliabilities for models with metafounders. [289] Part 17 - Challenges - improving genomic prediction. In: Proceedings of the World Congress on Genetics Applied to Livestock Production (WCGALP), 12., Rotterdam, the Netherlands, 3-8 July 2022. doi: https://doi.org/10.3920/978-90-8686-940-4_289 1217-1220. Article history: Published online: February 9, 2023. -- Corresponding author: A. Legarra, email: andres.legarra@inrae.fr -- Acknowledgment: This work received financing from European Unions' Horizon 2020 Research & Innovation Programme,...| Biblioteca(s): INIA Las Brujas. |
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| Registros recuperados : 223 | |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela; INIA Las Brujas. |
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Fecha actual : |
21/02/2014 |
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Actualizado : |
18/06/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
A - 1 |
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Autor : |
PSZCZOLA, M.; AGUILAR, I.; MISZTAL, I. |
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Afiliación : |
M. PSZCZOLA, Animal and Dairy Science Department, University of Georgia, United States; Animal Breeding and Genetics Group, Wageningen Institute of Animal Sciences, Wageningen University, Netherlands; IGNACIO AGUILAR GARCIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; I. MISZTAL, Animal and Dairy Science Department, University of Georgia, United States. |
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Título : |
Short communication: Trends for monthly changes in days open in Holsteins. |
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Fecha de publicación : |
2009 |
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Fuente / Imprenta : |
Journal of Dairy Science, 2009, 92 (9): 4689-4696. OPEN ACCESS. |
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ISSN : |
0022-0302 |
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DOI : |
10.3168/jds.2008-1985 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received December 17, 2008. // Accepted May 5, 2009. |
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Contenido : |
ABSTRACT.
A reaction norm approach was used to estimate trends for days open (DO) with a model that indirectly accounted for heat stress. Data included 3.4 million first-parity records of DO of US Holsteins. A fixed effect model included herd-year, month of calving within region (MOC), age class, and regression on 305-d milk yield. An index calculated from the standardized solutions to MOC derived from the fixed effect model was treated as a proxy for an index on heat stress (SI). The lowest index for any region was set to zero. The highest index was 1.00 for the Southeast, 0.56 for the Northeast, 0.54 for the Midwest, 0.33 for the Northwest, and 0.42 for the Southwest. In all regions except the Northwest, the highest DO and the corresponding highest indices were in March-April. Compared with the fixed model, the reaction norm model also included the effect of an animal and a random regression on the SI; the 2 animal solutions are subsequently referred to as an intercept and a slope. Genetic trends were calculated for cows and sires separately. For cows, the trend for the intercept was -0.1 d/yr, whereas the trend for the slope was 1 d/yr. For sires, the same trends were -0.3 and 1.5, respectively. Official proofs were used to characterize the 100 top and 100 bottom bulls with at least 50 daughters for the intercept and the slope. Compared with the top bulls, the bottom bulls for the intercept gave 56 kg more milk and their type performance index was higher by 212 points. For the slope, the same numbers were -435 kg and -242 points, respectively. Trends for seasonal changes of days open are unfavorable.
© American Dairy Science Association, 2009. MenosABSTRACT.
A reaction norm approach was used to estimate trends for days open (DO) with a model that indirectly accounted for heat stress. Data included 3.4 million first-parity records of DO of US Holsteins. A fixed effect model included herd-year, month of calving within region (MOC), age class, and regression on 305-d milk yield. An index calculated from the standardized solutions to MOC derived from the fixed effect model was treated as a proxy for an index on heat stress (SI). The lowest index for any region was set to zero. The highest index was 1.00 for the Southeast, 0.56 for the Northeast, 0.54 for the Midwest, 0.33 for the Northwest, and 0.42 for the Southwest. In all regions except the Northwest, the highest DO and the corresponding highest indices were in March-April. Compared with the fixed model, the reaction norm model also included the effect of an animal and a random regression on the SI; the 2 animal solutions are subsequently referred to as an intercept and a slope. Genetic trends were calculated for cows and sires separately. For cows, the trend for the intercept was -0.1 d/yr, whereas the trend for the slope was 1 d/yr. For sires, the same trends were -0.3 and 1.5, respectively. Official proofs were used to characterize the 100 top and 100 bottom bulls with at least 50 daughters for the intercept and the slope. Compared with the top bulls, the bottom bulls for the intercept gave 56 kg more milk and their type performance index was higher by 212 points. Fo... Presentar Todo |
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Palabras claves : |
DAIRY CATTLE; DAYS OPEN; DÍAS ABIERTOS; ESTRÉS TÉRMICO; FERTILIDAD; FERTILITY; HEAT STRESS; REPRODUCCIÓN ANIMAL; VACAS LECHERAS; VACAS VACÍAS. |
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Thesagro : |
GANADO LECHERO. |
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Asunto categoría : |
--
L53 Fisiología Animal - Reproducción |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/12195/1/Pszczola-M.-2009.-Jr.Dairy-Science.pdf
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Marc : |
LEADER 02577naa a2200313 a 4500
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008 2009 bl uuuu u00u1 u #d
022 $a0022-0302
024 7 $a10.3168/jds.2008-1985$2DOI
100 1 $aPSZCZOLA, M.
245 $aShort communication$bTrends for monthly changes in days open in Holsteins.
260 $c2009
500 $aArticle history: Received December 17, 2008. // Accepted May 5, 2009.
520 $aABSTRACT. A reaction norm approach was used to estimate trends for days open (DO) with a model that indirectly accounted for heat stress. Data included 3.4 million first-parity records of DO of US Holsteins. A fixed effect model included herd-year, month of calving within region (MOC), age class, and regression on 305-d milk yield. An index calculated from the standardized solutions to MOC derived from the fixed effect model was treated as a proxy for an index on heat stress (SI). The lowest index for any region was set to zero. The highest index was 1.00 for the Southeast, 0.56 for the Northeast, 0.54 for the Midwest, 0.33 for the Northwest, and 0.42 for the Southwest. In all regions except the Northwest, the highest DO and the corresponding highest indices were in March-April. Compared with the fixed model, the reaction norm model also included the effect of an animal and a random regression on the SI; the 2 animal solutions are subsequently referred to as an intercept and a slope. Genetic trends were calculated for cows and sires separately. For cows, the trend for the intercept was -0.1 d/yr, whereas the trend for the slope was 1 d/yr. For sires, the same trends were -0.3 and 1.5, respectively. Official proofs were used to characterize the 100 top and 100 bottom bulls with at least 50 daughters for the intercept and the slope. Compared with the top bulls, the bottom bulls for the intercept gave 56 kg more milk and their type performance index was higher by 212 points. For the slope, the same numbers were -435 kg and -242 points, respectively. Trends for seasonal changes of days open are unfavorable. © American Dairy Science Association, 2009.
650 $aGANADO LECHERO
653 $aDAIRY CATTLE
653 $aDAYS OPEN
653 $aDÍAS ABIERTOS
653 $aESTRÉS TÉRMICO
653 $aFERTILIDAD
653 $aFERTILITY
653 $aHEAT STRESS
653 $aREPRODUCCIÓN ANIMAL
653 $aVACAS LECHERAS
653 $aVACAS VACÍAS
700 1 $aAGUILAR, I.
700 1 $aMISZTAL, I.
773 $tJournal of Dairy Science, 2009, 92 (9): 4689-4696. OPEN ACCESS.
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