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Registros recuperados : 175 | |
102. | | BRIANO, C.; SCARSI, A.; VELAZCO, J.I.; BAKKER, M.; BANCHERO, G.; MEIKLE, A.; QUINTANS, G. Alta y baja asignación de forraje antes del parto: efectos sobre variables productivas y reproductivas. Resultados preliminares In: QUINTANS, G.; SCARSI, A. (Eds.). Seminario de actualización técnica: cría vacuna Montevideo (UY): INIA, 2013. p. 175-185 (INIA Serie Técnica; 208)Biblioteca(s): INIA La Estanzuela; INIA Las Brujas; INIA Tacuarembó; INIA Treinta y Tres. |
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103. | | BRIANO, C.; SCARSI, M.; VELAZCO, J.; BANCHERO, G.; MEIKLE, A.; QUINTANS, G. Alta y baja asignación de forraje antes del parto: I. Efectos sobre variables productivas, metabólicas y hormonales en vacas de carne. En: Congreso Latinoamericano de Producción Animal (ALPA). (23º, 2013, La Habana, Cuba). Actas Congreso.Biblioteca(s): INIA La Estanzuela; INIA Treinta y Tres. |
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105. | | NAVAJAS, E.; CIAPPESONI, G.; GIMENO, D.; VELAZCO, J.I.; DE BARBIERI, I. Association of genetic resistance to internal nematodes and production traits on feed efficiency and methane emissions in Corriedale lambs. [37]- Part 5 - Novel traits: environment and greenhouse gas. 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_37 195-198. Article history: Published online: February 9, 2023. -- Corresponding author: Gabriel Ciappesoni, email: ciappesoni@inia.org.uy -- Acknowledgements: This project has received funding from the European Union's Horizon 2020 research and...Biblioteca(s): INIA Las Brujas. |
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112. | | BATISTA, C.; VELAZCO, J.I.; BALDI, F.; BANCHERO, G.; QUINTANS, G. Efecto del consumo de energía durante el último tercio de gestación de vacas de carne sobre sus perfiles de hormonas metabólicas y los de su progenie. In: UNIVERSIDAD DE LA REPÚBLICA (UDELAR). FACULTAD DE AGRONOMÍA. Resúmenes. Jornadas de Investigación, 8-9 nov., 2018, Montevideo, Uruguay. Montevideo; FAGRO, 2019. p. 25Biblioteca(s): INIA Treinta y Tres. |
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120. | | GODWIN, I.; LI, L.; LUIJBEN, K.; OELBRANDT, N.; VELAZCO, J.I.; MILLER, J.; HEGARTY, R. The effects of chronic nitrate supplementation on erythrocytic methaemoglobin reduction in cattle. Animal Production Science, 2015, v. 55(5), p. 611-616. Article history: Received 2 September 2013, accepted 6 February 2014, published online 8 May 2014.Biblioteca(s): INIA Treinta y Tres. |
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| Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
25/07/2016 |
Actualizado : |
09/10/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
A - -- |
Autor : |
VELAZCO, J.I.; HERD, R.M.; COTTLE, D.J.; HEGARTY, R.S. |
Afiliación : |
JOSÉ IGNACIO VELAZCO DE LOS REYES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. University of New England, Australia.; Department of Primary Industries, Australia.; University of New England, Australia; University of New England, Australia. |
Título : |
Daily methane emissions and emission intensity of grazing beef cattle genetically divergent for residual feed intake. |
Fecha de publicación : |
2017 |
Fuente / Imprenta : |
Animal Production Science, 2017, v. 57, p. 627-635. |
DOI : |
10.1071/AN15111 |
Idioma : |
Inglés |
Notas : |
Article history: Submitted: 27 February 2015 Accepted: 15 January 2016 Published (Preview): 27 May 2016. |
Contenido : |
Abstract:
As daily methane production (DMP; g CH4/day) is strongly correlated with dry matter intake (DMI), the breeding of cattle that require less feed to achieve a desired rate of average daily gain (ADG) by selection for a low residual feed intake (RFI) can be expected to reduce DMP and also emission intensity (EI; g CH4/kg ADG). An xperiment was conducted to compare DMP and EI of Angus cattle genetically divergent for RFI and 400-day weight (400dWT). In a 6-week grazing study, 64 yearling-age cattle (30 steers, 34 heifers) were grazed on temperate pastures, with heifers and steers grazing separate paddocks. Liveweight (LW) was monitored weekly and DMP of individual cattle was measured by a GreenFeed emission monitoring unit in each paddock. Thirty-nine of the possible 64 animals had emission data recorded for 15 or more days, and only data for these animals were analysed. For these cattle, regression against their mid-parent estimated breeding value (EBV) for post-weaning RFI (RFI-EBV) showed that a lower RFI-EBV was associated with higher LW at the start of experiment. Predicted dry matter intake (pDMI), predicted DMP (pDMP) and measured DMP (mDMP) were all egatively correlated with RFI-EBV (P < 0.05), whereas ADG, EI, predicted CH4 yield (pMY; g CH4/kg DMI) were not correlated with RFI-EBV (P > 0.1). Daily CH4 production was positively correlated with animal LW and ADG (P < 0.05). The associations between ADG and its dependent traits EI and pMY and predicted feed conversion ratio (kg pDMI/kg ADG) were strongly negative (r = ?0.82, ?0.57 and ?0.85, P < 0.001) implying that faster daily growth by cattle was accompanied by lower EI, MY and feed conversion ratio. These results show that cattle genetically divergent for RFI do not necessarily differ in ADG, EI or pMY on pasture and that, if heavier, cattle with lower RFI-EBV can actually have higher DMP while grazing moderate quality pastures. MenosAbstract:
As daily methane production (DMP; g CH4/day) is strongly correlated with dry matter intake (DMI), the breeding of cattle that require less feed to achieve a desired rate of average daily gain (ADG) by selection for a low residual feed intake (RFI) can be expected to reduce DMP and also emission intensity (EI; g CH4/kg ADG). An xperiment was conducted to compare DMP and EI of Angus cattle genetically divergent for RFI and 400-day weight (400dWT). In a 6-week grazing study, 64 yearling-age cattle (30 steers, 34 heifers) were grazed on temperate pastures, with heifers and steers grazing separate paddocks. Liveweight (LW) was monitored weekly and DMP of individual cattle was measured by a GreenFeed emission monitoring unit in each paddock. Thirty-nine of the possible 64 animals had emission data recorded for 15 or more days, and only data for these animals were analysed. For these cattle, regression against their mid-parent estimated breeding value (EBV) for post-weaning RFI (RFI-EBV) showed that a lower RFI-EBV was associated with higher LW at the start of experiment. Predicted dry matter intake (pDMI), predicted DMP (pDMP) and measured DMP (mDMP) were all egatively correlated with RFI-EBV (P < 0.05), whereas ADG, EI, predicted CH4 yield (pMY; g CH4/kg DMI) were not correlated with RFI-EBV (P > 0.1). Daily CH4 production was positively correlated with animal LW and ADG (P < 0.05). The associations between ADG and its dependent traits EI and pMY and predicted feed conv... Presentar Todo |
Palabras claves : |
CH4; FEED CONSERVATION EFFICIENCY; GRAZING CATTLE; GREENHOUSE GASES; MEASUREMENT; RFI. |
Thesagro : |
GASES DE EFECTO INVERNADERO; MEDIDAS; METANO; PASTOREO DE GANADO. |
Asunto categoría : |
T01 Polución |
Marc : |
LEADER 02893naa a2200301 a 4500 001 1055090 005 2019-10-09 008 2017 bl uuuu u00u1 u #d 024 7 $a10.1071/AN15111$2DOI 100 1 $aVELAZCO, J.I. 245 $aDaily methane emissions and emission intensity of grazing beef cattle genetically divergent for residual feed intake.$h[electronic resource] 260 $c2017 500 $aArticle history: Submitted: 27 February 2015 Accepted: 15 January 2016 Published (Preview): 27 May 2016. 520 $aAbstract: As daily methane production (DMP; g CH4/day) is strongly correlated with dry matter intake (DMI), the breeding of cattle that require less feed to achieve a desired rate of average daily gain (ADG) by selection for a low residual feed intake (RFI) can be expected to reduce DMP and also emission intensity (EI; g CH4/kg ADG). An xperiment was conducted to compare DMP and EI of Angus cattle genetically divergent for RFI and 400-day weight (400dWT). In a 6-week grazing study, 64 yearling-age cattle (30 steers, 34 heifers) were grazed on temperate pastures, with heifers and steers grazing separate paddocks. Liveweight (LW) was monitored weekly and DMP of individual cattle was measured by a GreenFeed emission monitoring unit in each paddock. Thirty-nine of the possible 64 animals had emission data recorded for 15 or more days, and only data for these animals were analysed. For these cattle, regression against their mid-parent estimated breeding value (EBV) for post-weaning RFI (RFI-EBV) showed that a lower RFI-EBV was associated with higher LW at the start of experiment. Predicted dry matter intake (pDMI), predicted DMP (pDMP) and measured DMP (mDMP) were all egatively correlated with RFI-EBV (P < 0.05), whereas ADG, EI, predicted CH4 yield (pMY; g CH4/kg DMI) were not correlated with RFI-EBV (P > 0.1). Daily CH4 production was positively correlated with animal LW and ADG (P < 0.05). The associations between ADG and its dependent traits EI and pMY and predicted feed conversion ratio (kg pDMI/kg ADG) were strongly negative (r = ?0.82, ?0.57 and ?0.85, P < 0.001) implying that faster daily growth by cattle was accompanied by lower EI, MY and feed conversion ratio. These results show that cattle genetically divergent for RFI do not necessarily differ in ADG, EI or pMY on pasture and that, if heavier, cattle with lower RFI-EBV can actually have higher DMP while grazing moderate quality pastures. 650 $aGASES DE EFECTO INVERNADERO 650 $aMEDIDAS 650 $aMETANO 650 $aPASTOREO DE GANADO 653 $aCH4 653 $aFEED CONSERVATION EFFICIENCY 653 $aGRAZING CATTLE 653 $aGREENHOUSE GASES 653 $aMEASUREMENT 653 $aRFI 700 1 $aHERD, R.M. 700 1 $aCOTTLE, D.J. 700 1 $aHEGARTY, R.S. 773 $tAnimal Production Science, 2017$gv. 57, p. 627-635.
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