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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
21/02/2014 |
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Actualizado : |
08/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
HOTZEL, M.J.; QUINTANS, G.; UNGERFELD, R. |
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Afiliación : |
GRACIELA QUINTANS ILARIA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Behaviour response to two-step weaning is diminished in beef calves previously submitted to temporary weaning with nose flaps. |
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Fecha de publicación : |
2012 |
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Fuente / Imprenta : |
Livestock Science, 2012, v.149, no.1-2, p.88-95. |
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DOI : |
10.1016/j.livsci.2012.06.029 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 21 September 2011. Received in revised form 22 June 2012. Accepted 27 June 2012. |
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Contenido : |
Abstract:
Temporary weaning (TW) of beef calves for 5?14 days is a husbandry practice that is frequently used to help advance rebreeding in postpartum cows. The aim of this study was to compare the behaviour response to two-step weaning with the use of nose flaps, in beef calves that had or not been submitted to TW with nose flaps during the breeding period. Thirteen calves that had been fitted with nose-flap anti-suckling devices from 71 to 84 days of age (TW group), and 11 calves that had not received nose flaps during breeding of their dams (C group) were weaned with a two-step procedure. At 189 days of age, they were fitted with nose flaps and remained with the dams (nose flap period, NF); 14 days later all calves were separated from the dams (permanent separation period, PS). Behaviour was observed from 186 to 193 days of age (NF) and from 200 to 209 days of age (PS). Behaviour data for the NF and PS periods were analysed with mixed models for repeated measures. Before weaning, TW calves had greater proportion of observations suckling and grazing, lower proportion of playing, and remained closer to the dam compared to C calves. During the NF period, C calves had lower frequencies of observations standing, grazing, and drinking water, indicating that calves that had nose flaps during their dams' breeding period adapted faster to the anti-suckling device and the cessation of suckling. During the PS period, C calves had a lower frequency of observations grazing and a greater rate of vocalisations, and TW calves displayed an overall earlier, but shorter behaviour response than C calves. We conclude that the benefits of two-step weaning with nose flaps are greater for calves that have worn nose flaps for temporary weaning during the breeding of their dams. MenosAbstract:
Temporary weaning (TW) of beef calves for 5?14 days is a husbandry practice that is frequently used to help advance rebreeding in postpartum cows. The aim of this study was to compare the behaviour response to two-step weaning with the use of nose flaps, in beef calves that had or not been submitted to TW with nose flaps during the breeding period. Thirteen calves that had been fitted with nose-flap anti-suckling devices from 71 to 84 days of age (TW group), and 11 calves that had not received nose flaps during breeding of their dams (C group) were weaned with a two-step procedure. At 189 days of age, they were fitted with nose flaps and remained with the dams (nose flap period, NF); 14 days later all calves were separated from the dams (permanent separation period, PS). Behaviour was observed from 186 to 193 days of age (NF) and from 200 to 209 days of age (PS). Behaviour data for the NF and PS periods were analysed with mixed models for repeated measures. Before weaning, TW calves had greater proportion of observations suckling and grazing, lower proportion of playing, and remained closer to the dam compared to C calves. During the NF period, C calves had lower frequencies of observations standing, grazing, and drinking water, indicating that calves that had nose flaps during their dams' breeding period adapted faster to the anti-suckling device and the cessation of suckling. During the PS period, C calves had a lower frequency of observations grazing and a great... Presentar Todo |
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Palabras claves : |
AFFECTIVE STATE; ANIMAL WELFARE; CATTLE; MOTHER-OFFSPRING BOND; SUCKLING. |
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Thesagro : |
AMAMANTAMIENTO; BIENESTAR DE LOS ANIMALES; BOVINOS; DESTETE TEMPORARIO; TABLILLA NASAL. |
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Asunto categoría : |
L02 Alimentación animal |
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Marc : |
LEADER 02727naa a2200289 a 4500
001 1032762
005 2019-10-08
008 2012 bl uuuu u00u1 u #d
024 7 $a10.1016/j.livsci.2012.06.029$2DOI
100 1 $aHOTZEL, M.J.
245 $aBehaviour response to two-step weaning is diminished in beef calves previously submitted to temporary weaning with nose flaps.
260 $c2012
500 $aArticle history: Received 21 September 2011. Received in revised form 22 June 2012. Accepted 27 June 2012.
520 $aAbstract: Temporary weaning (TW) of beef calves for 5?14 days is a husbandry practice that is frequently used to help advance rebreeding in postpartum cows. The aim of this study was to compare the behaviour response to two-step weaning with the use of nose flaps, in beef calves that had or not been submitted to TW with nose flaps during the breeding period. Thirteen calves that had been fitted with nose-flap anti-suckling devices from 71 to 84 days of age (TW group), and 11 calves that had not received nose flaps during breeding of their dams (C group) were weaned with a two-step procedure. At 189 days of age, they were fitted with nose flaps and remained with the dams (nose flap period, NF); 14 days later all calves were separated from the dams (permanent separation period, PS). Behaviour was observed from 186 to 193 days of age (NF) and from 200 to 209 days of age (PS). Behaviour data for the NF and PS periods were analysed with mixed models for repeated measures. Before weaning, TW calves had greater proportion of observations suckling and grazing, lower proportion of playing, and remained closer to the dam compared to C calves. During the NF period, C calves had lower frequencies of observations standing, grazing, and drinking water, indicating that calves that had nose flaps during their dams' breeding period adapted faster to the anti-suckling device and the cessation of suckling. During the PS period, C calves had a lower frequency of observations grazing and a greater rate of vocalisations, and TW calves displayed an overall earlier, but shorter behaviour response than C calves. We conclude that the benefits of two-step weaning with nose flaps are greater for calves that have worn nose flaps for temporary weaning during the breeding of their dams.
650 $aAMAMANTAMIENTO
650 $aBIENESTAR DE LOS ANIMALES
650 $aBOVINOS
650 $aDESTETE TEMPORARIO
650 $aTABLILLA NASAL
653 $aAFFECTIVE STATE
653 $aANIMAL WELFARE
653 $aCATTLE
653 $aMOTHER-OFFSPRING BOND
653 $aSUCKLING
700 1 $aQUINTANS, G.
700 1 $aUNGERFELD, R.
773 $tLivestock Science, 2012$gv.149, no.1-2, p.88-95.
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha actual : |
25/07/2016 |
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Actualizado : |
09/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
A - -- |
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Autor : |
VELAZCO, J.I.; HERD, R.M.; COTTLE, D.J.; HEGARTY, R.S. |
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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. |
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Título : |
Daily methane emissions and emission intensity of grazing beef cattle genetically divergent for residual feed intake. |
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Fecha de publicación : |
2017 |
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Fuente / Imprenta : |
Animal Production Science, 2017, v. 57, p. 627-635. |
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DOI : |
10.1071/AN15111 |
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Idioma : |
Inglés |
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Notas : |
Article history: Submitted: 27 February 2015 Accepted: 15 January 2016 Published (Preview): 27 May 2016. |
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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 |
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Palabras claves : |
CH4; FEED CONSERVATION EFFICIENCY; GRAZING CATTLE; GREENHOUSE GASES; MEASUREMENT; RFI. |
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Thesagro : |
GASES DE EFECTO INVERNADERO; MEDIDAS; METANO; PASTOREO DE GANADO. |
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Asunto categoría : |
T01 Polución |
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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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