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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha : |
25/07/2016 |
Actualizado : |
09/10/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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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Biblioteca (s) : |
INIA Las Brujas. |
Fecha actual : |
24/10/2016 |
Actualizado : |
24/10/2016 |
Tipo de producción científica : |
Trabajos en Congresos/Conferencias |
Autor : |
SANDRO, P.; REBOLLO, I.; GAIERO, P.; VAIO, M.; VILARO, F.; SPERANZA, P. |
Afiliación : |
P. SANDRO, Universidad de la República (UdelaR)/ Facultad de Agronomía; I. REBOLLO, Universidad de la República (UdelaR)/ Facultad de Agronomía; P. GAIERO, Universidad de la República (UdelaR)/ Facultad de Agronomía; M. VAIO, Universidad de la República (UdelaR)/ Facultad de Agronomía; FRANCISCO LUIS VILARO PAREJA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; P. SPERANZA, Universidad de la República (UdelaR)/ Facultad de Agronomía. |
Título : |
Diseño de microsatélites para Solanum commersonii a partir de información genómica. |
Complemento del título : |
GGM 44 - COMUNICACIONES LIBRES - GGM. GENÓMICA Y GENÉTICA MOLECULAR |
Fecha de publicación : |
2016 |
Fuente / Imprenta : |
In: JOURNAL OF BASIC & APPLIED GENETICS, 2016, Vol.27, Iss. 1 (Supp.). XVI LATIN AMERICAN CONGRESS OF GENETICS, IV CONGRESS OF THE URUGUAYAN SOCIETY OF GENETICS, XLIX ANNUAL MEETING OF THE GENETICS SOCIETY OF CHILE, XLV ARGENTINE CONGRESS OF GENETICS, 9-12 October 2016. PROCEEDINGS. Montevideo (Uruguay): SAG, 2016. |
Páginas : |
p. 276 |
ISSN : |
1852-6233 |
Idioma : |
Español |
Thesagro : |
FITOMEJORAMIENTO; PAPA. |
Asunto categoría : |
-- |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/6209/1/Simposio-BAG-v.XXVIII-Suppl.1.p.276.pdf
http://www.alag2016.org/admin/files/alag2016/upload/files/V.XXVIII_2016_Suppl1_19092016.pdf
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Marc : |
LEADER 00847nam a2200205 a 4500 001 1055863 005 2016-10-24 008 2016 bl uuuu u0uu1 u #d 022 $a1852-6233 100 1 $aSANDRO, P. 245 $aDiseño de microsatélites para Solanum commersonii a partir de información genómica.$h[electronic resource] 260 $aIn: JOURNAL OF BASIC & APPLIED GENETICS, 2016, Vol.27, Iss. 1 (Supp.). XVI LATIN AMERICAN CONGRESS OF GENETICS, IV CONGRESS OF THE URUGUAYAN SOCIETY OF GENETICS, XLIX ANNUAL MEETING OF THE GENETICS SOCIETY OF CHILE, XLV ARGENTINE CONGRESS OF GENETICS, 9-12 October 2016. PROCEEDINGS. Montevideo (Uruguay): SAG$c2016 300 $ap. 276 650 $aFITOMEJORAMIENTO 650 $aPAPA 700 1 $aREBOLLO, I. 700 1 $aGAIERO, P. 700 1 $aVAIO, M. 700 1 $aVILARO, F. 700 1 $aSPERANZA, P.
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