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| Registros recuperados : 7 | |
| 1. |  | Martins, C.E.N.; Quadros, F.L.F.de Botanal : desenvolvimento de uma planilha electrônica para avaliação de disponibilidade de matéria seca e composição florística de pastagens ln: Reunión del Grupo Técnico Regional del Cono Sur en Mejoramiento y Utilización de los Recursos Forrajeros del Area Tropical y Subtropical, Grupo Campos, 20., 2004, Salto, UY Saldanha, S.; Bemhaja, M.; Moliterno, E.; Olmos, F.; Uriarte, G., ed. Sustentabilidad, desarrollo y conservación de los ecosistemas : memorias. Salto: UdelaR. Regional Norte, 2004. p. 229-231| Biblioteca(s): INIA La Estanzuela. |
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| 2. | | FAGUNDES, R.Z.; QUADROS, F.L.F.; JAURENA, M. Efeito das condições climáticas e da oferta de forragem na resposta da recria bovina em campos nativos de fertilidade contrastante. [Resumen]. In: Reunión del Grupo Técnico en Forrajeras del Cono Sur, Grupo Campos, 24, 2017, Tacuarembó, Uruguay; Ayala, W.; Boggiano, P.; Álvarez, O.; eds. Bioma campos : Retomando un camino de oportunidades para una producción ganadera sustentable. Memorias. Tacuarembó (Uruguay): Grupo Campos, 2017.| Biblioteca(s): INIA Tacuarembó. |
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| 3. | | Martins, C.E.N.; Quadros, F.L.F.de Programa para estimativa da massa de forragem ln: Reunión del Grupo Técnico Regional del Cono Sur en Mejoramiento y Utilización de los Recursos Forrajeros del Area Tropical y Subtropical, Grupo Campos, 20., 2004, Salto, UY Saldanha, S.; Bemhaja, M.; Moliterno, E.; Olmos, F.; Uriarte, G., ed. Sustentabilidad, desarrollo y conservación de los ecosistemas : memorias. Salto: UdelaR. Regional Norte, 2004. p. 227-228| Biblioteca(s): INIA La Estanzuela. |
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| 4. | | Martins, C.E.N.; Quadros, F.L.F.de; Bandinelli, D.G.; Maixner, A.R.; Brum, M.da S.; Simões, L.F.C. Densidade de forragem nos estratos verticais de uma pastagen de aveia e azevém submetida a diferentes níveis de biomassa de lâmina foliar verde ln: Reunión del Grupo Técnico Regional del Cono Sur en Mejoramiento y Utilización de los Recursos Forrajeros del Area Tropical y Subtropical, Grupo Campos, 20., 2004, Salto, UY Saldanha, S.; Bemhaja, M.; Moliterno, E.; Olmos, F.; Uriarte, G., ed. Sustentabilidad, desarrollo y conservación de los ecosistemas : memorias. Salto: UdelaR. Regional Norte, 2004. p. 181-183| Biblioteca(s): INIA La Estanzuela. |
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| 5. | | CRUZ, P.; LEZANA, L.; DURANTE, M.; JAURENA, M.; FIGARI, M.; DE OLIVEIRA, L.B.; THEAU, J.-P.; MASSA, E.; VIEGAS, J.; DE QUADROS, F.L.F. A functional classification of 63 common poaceae in the "campos" grasslands of South America. [Una clasificación funcional de 63 Poáceas comunes de los pastizales naturales de Sudamérica]. Ecologia Austral, August 2019, Volume 29, Issue 2, Pages 239-248. OPEN ACCESS. Article history: Recibido: 23 de Marzo de 2018 // Aceptado: 26 de Febrero de 2019.| Biblioteca(s): INIA Tacuarembó. |
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| 6. | | Everling, D.M.Quadros, F.L.F.Viégas, J.Sanchez, L.M.B.Gonçalves, M.B.F.Lovatto, P.A.Rorato, P.R.N., eds. Modelos para a tomada de decisoes na produçao de bovinos e ovinos Santa Maria, RS (Brasil): Embrapa Pecuária Sul, 2002. 176 p.| Biblioteca(s): INIA Tacuarembó. |
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| 7. | | JAURENA, M.; DURANTE, M.; DEVINCENZI, T.; SAVIAN, J.V.; BENDERSKY, D.; MOOJEN, F.G.; PEREIRA, M.; SOCA, P.; QUADROS, F.L.F.; PIZZIO, R.; NABINGER, C.; CARVALHO, P.C.F.; LATTANZI, F. Native Grasslands at the Core: A New Paradigm of Intensification for the Campos of Southern South America to Increase Economic and Environmental Sustainability Front. Sustain. Food Syst., 05 March 2021, OPEN ACCESS. DOI: https://doi.org/10.3389/fsufs.2021.547834 Article history: Received: 31 March 2020, Accepted: 07 January 2021, Published: 05 March 2021. ACKNOWLEDGMENTS: The authors gratefully acknowledge Fiorella Cazulli for the
English corrections.Correspondence: Martín Jaurena...| Biblioteca(s): INIA Tacuarembó. |
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| Registros recuperados : 7 | |
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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 : |
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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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