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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha : |
21/02/2014 |
Actualizado : |
12/03/2021 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Nacionales |
Autor : |
IRISARRI, P.; PEREYRA, V.; FERNÁNDEZ, A.; TERRA, J.A.; TARLERA, S. |
Afiliación : |
JOSÉ ALFREDO TERRA FERNÁNDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Emisiones de CH4 y N2O en un arrozal: primeras medidas en el sistema productivo uruguayo. [CH4 and N2O Emissions in a rice field: first measurements in the
uruguayan productive system]. |
Fecha de publicación : |
2012 |
Fuente / Imprenta : |
Agrociencia Uruguay, 2012, v.16, no.2, p. 1-10. |
Idioma : |
Español |
Notas : |
Historia del artículo: Recibido: 18/5/12; Aceptado: 4/9/12. |
Contenido : |
RESUMEN
Los arrozales son fuente de dos importantes gases de efecto invernadero (GEI), metano y óxido nitroso. Como un paso inicial hacia la obtención de información local, se midieron las emisiones de CH4 y N2O del suelo y de las plantas de arroz mediante la técnica de la cámara estática en experimentos en invernáculo y a campo en el este de Uruguay. En el experimento en invernáculo, se estudió el efecto del momento de inundación (21 y 45 días después de la emergencia) y de la fertilización
nitrogenada (0 y 50 kg N ha-1) sobre las emisiones. La inundación temprana y la fertilización nitrogenada tendieron a aumentar las emisiones de N2O. En el experimento a campo, se estudió el efecto de la cobertura invernal y de la fertilización nitrogenada (0 y 82 kg N ha-1). Se detectaron mayores flujos de CH4
durante la etapa reproductiva de la planta en el tratamiento fertilizado con cobertura invernal previa de raigrás. El flujo de N2O fue máximo después de los baños. Los resultados indican que el uso del cultivo de cobertura podría incrementar las emisiones de GEI durante el ciclo del arroz. A pesar de las distintas prácticas
de manejo del cultivo empleadas en Uruguay, los flujos de CH4 y N2O se encuentran dentro de los valores informados previamente para arrozales de otras partes del mundo. |
Palabras claves : |
FERTILIZACION N; GASES DE EFECTO INVERNADERO (GEI); GREENHOUSE GASES; N FERTILIZATION; RICE PADDY SOIL; SUELO INUNDADO CULTIVADO CON ARROZ. |
Thesagro : |
ARROZ; GASES; METANO; OXIDO NITROSO; URUGUAY. |
Asunto categoría : |
F01 Cultivo |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/11243/1/Agrociencia-2012-162Irisarri.pdf
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Marc : |
LEADER 02349naa a2200313 a 4500 001 1032764 005 2021-03-12 008 2012 bl uuuu u00u1 u #d 100 1 $aIRISARRI, P. 245 $aEmisiones de CH4 y N2O en un arrozal$bprimeras medidas en el sistema productivo uruguayo. [CH4 and N2O Emissions in a rice field: first measurements in the uruguayan productive system].$h[electronic resource] 260 $c2012 500 $aHistoria del artículo: Recibido: 18/5/12; Aceptado: 4/9/12. 520 $aRESUMEN Los arrozales son fuente de dos importantes gases de efecto invernadero (GEI), metano y óxido nitroso. Como un paso inicial hacia la obtención de información local, se midieron las emisiones de CH4 y N2O del suelo y de las plantas de arroz mediante la técnica de la cámara estática en experimentos en invernáculo y a campo en el este de Uruguay. En el experimento en invernáculo, se estudió el efecto del momento de inundación (21 y 45 días después de la emergencia) y de la fertilización nitrogenada (0 y 50 kg N ha-1) sobre las emisiones. La inundación temprana y la fertilización nitrogenada tendieron a aumentar las emisiones de N2O. En el experimento a campo, se estudió el efecto de la cobertura invernal y de la fertilización nitrogenada (0 y 82 kg N ha-1). Se detectaron mayores flujos de CH4 durante la etapa reproductiva de la planta en el tratamiento fertilizado con cobertura invernal previa de raigrás. El flujo de N2O fue máximo después de los baños. Los resultados indican que el uso del cultivo de cobertura podría incrementar las emisiones de GEI durante el ciclo del arroz. A pesar de las distintas prácticas de manejo del cultivo empleadas en Uruguay, los flujos de CH4 y N2O se encuentran dentro de los valores informados previamente para arrozales de otras partes del mundo. 650 $aARROZ 650 $aGASES 650 $aMETANO 650 $aOXIDO NITROSO 650 $aURUGUAY 653 $aFERTILIZACION N 653 $aGASES DE EFECTO INVERNADERO (GEI) 653 $aGREENHOUSE GASES 653 $aN FERTILIZATION 653 $aRICE PADDY SOIL 653 $aSUELO INUNDADO CULTIVADO CON ARROZ 700 1 $aPEREYRA, V. 700 1 $aFERNÁNDEZ, A. 700 1 $aTERRA, J.A. 700 1 $aTARLERA, S. 773 $tAgrociencia Uruguay, 2012$gv.16, no.2, p. 1-10.
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INIA Treinta y Tres (TT) |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
21/11/2016 |
Actualizado : |
11/10/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
A - B |
Autor : |
UNGERFELD, R.; QUINTANS, G.; HOTZEL, M.J. |
Afiliación : |
DEPARTAMENTO DE FISIOLOGÍA, FACULTAD DE VETERINARIA, UDELAR.; GRACIELA QUINTANS ILARIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; LABORATORIO DE ETOLOGÍA APLICADA, DEPARTAMENTO DE ZOOTECNIA E DESENVOVIMENTO RURAL, UNIVERSIDADE FEDERAL DE SANTA CATARINA, BRAZIL. |
Título : |
Minimizing cows' stress when calves were early weaned using the two-step method with nose flaps. |
Fecha de publicación : |
2016 |
Fuente / Imprenta : |
Animal, 2016, v.10(11), p. 1871-1876. |
DOI : |
10.1017/S1751731116000793 |
Idioma : |
Inglés |
Notas : |
Article history: Received 12 November 2015; accepted 2 March 2016; First published online 29 April 2016. |
Contenido : |
Abstract:
Early weaning may be used in beef cattle production to improve reproduction rates in range conditions. However, weaning causes a stress response in cows, which may be especially strong in early weaning management, as the bond between the cow and the calf is still strong. We hypothesized that weaning calves in two steps, with the aid of anti-sucking devices (nose flaps) would reduce the behavioural stress response in the cows separated from their calves 2 months after parturition. We compared the behaviour frequency and weight change in cows that were weaned abruptly, by separation of the calf on day 0 of the study, or in two steps, consisting of the use of anti-sucking nose flaps for 5 days before permanent separation; a third group was not weaned to serve as control. Thirty-six crossbred multiparous Aberdeen Angus × Hereford cows and their calves (n = 12/treatment) were managed in three paddocks with similar pasture availability, with four dyads from each treatment per paddock. Cows’ vehaviour was observed by direct visual instantaneous sampling, at 10 min intervals from days ?3 to 11. Weaning the calves in two steps clearly attenuated the behavioural stress response observed in abruptly weaned cows, which included reductions in grazing and lying, and increases in pacing, walking and vocalizing. Our results corroborate those previously shown for cows nursing older calves, and indicate that step weaning can reduce the behavioural stress response of cows at weaning, even when the calf is
weaned shortly after birth, when the bond between the cow and calf is still very strong. MenosAbstract:
Early weaning may be used in beef cattle production to improve reproduction rates in range conditions. However, weaning causes a stress response in cows, which may be especially strong in early weaning management, as the bond between the cow and the calf is still strong. We hypothesized that weaning calves in two steps, with the aid of anti-sucking devices (nose flaps) would reduce the behavioural stress response in the cows separated from their calves 2 months after parturition. We compared the behaviour frequency and weight change in cows that were weaned abruptly, by separation of the calf on day 0 of the study, or in two steps, consisting of the use of anti-sucking nose flaps for 5 days before permanent separation; a third group was not weaned to serve as control. Thirty-six crossbred multiparous Aberdeen Angus × Hereford cows and their calves (n = 12/treatment) were managed in three paddocks with similar pasture availability, with four dyads from each treatment per paddock. Cows’ vehaviour was observed by direct visual instantaneous sampling, at 10 min intervals from days ?3 to 11. Weaning the calves in two steps clearly attenuated the behavioural stress response observed in abruptly weaned cows, which included reductions in grazing and lying, and increases in pacing, walking and vocalizing. Our results corroborate those previously shown for cows nursing older calves, and indicate that step weaning can reduce the behavioural stress response of cows at weaning,... Presentar Todo |
Palabras claves : |
ANIMAL WELFARE; BEEF CATTLE; BOS TAURUS; PACING; SUCKING. |
Thesagro : |
BOVINOS DE CARNE; REPRODUCCION ANIMAL. |
Asunto categoría : |
L10 Genética y mejoramiento animal |
Marc : |
LEADER 02421naa a2200253 a 4500 001 1056105 005 2019-10-11 008 2016 bl uuuu u00u1 u #d 024 7 $a10.1017/S1751731116000793$2DOI 100 1 $aUNGERFELD, R. 245 $aMinimizing cows' stress when calves were early weaned using the two-step method with nose flaps.$h[electronic resource] 260 $c2016 500 $aArticle history: Received 12 November 2015; accepted 2 March 2016; First published online 29 April 2016. 520 $aAbstract: Early weaning may be used in beef cattle production to improve reproduction rates in range conditions. However, weaning causes a stress response in cows, which may be especially strong in early weaning management, as the bond between the cow and the calf is still strong. We hypothesized that weaning calves in two steps, with the aid of anti-sucking devices (nose flaps) would reduce the behavioural stress response in the cows separated from their calves 2 months after parturition. We compared the behaviour frequency and weight change in cows that were weaned abruptly, by separation of the calf on day 0 of the study, or in two steps, consisting of the use of anti-sucking nose flaps for 5 days before permanent separation; a third group was not weaned to serve as control. Thirty-six crossbred multiparous Aberdeen Angus × Hereford cows and their calves (n = 12/treatment) were managed in three paddocks with similar pasture availability, with four dyads from each treatment per paddock. Cows’ vehaviour was observed by direct visual instantaneous sampling, at 10 min intervals from days ?3 to 11. Weaning the calves in two steps clearly attenuated the behavioural stress response observed in abruptly weaned cows, which included reductions in grazing and lying, and increases in pacing, walking and vocalizing. Our results corroborate those previously shown for cows nursing older calves, and indicate that step weaning can reduce the behavioural stress response of cows at weaning, even when the calf is weaned shortly after birth, when the bond between the cow and calf is still very strong. 650 $aBOVINOS DE CARNE 650 $aREPRODUCCION ANIMAL 653 $aANIMAL WELFARE 653 $aBEEF CATTLE 653 $aBOS TAURUS 653 $aPACING 653 $aSUCKING 700 1 $aQUINTANS, G. 700 1 $aHOTZEL, M.J. 773 $tAnimal, 2016$gv.10(11), p. 1871-1876.
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