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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 : |
27/11/2020 |
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Actualizado : |
22/02/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
-- - -- |
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Autor : |
HERD, R.M.; ARTHUR, P.F.; HEGARTY, R.S.; BIRD-GARDINER, T.; DONOGHUE, K.A.; VELAZCO, J.I. |
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Afiliación : |
NSW Department of Primary Industries, Livestock Industry Centre. Environmental and Rural Science, University of New England, Australia.; NSW Department of Primary Industries, Elizabeth Macarthur Agricultural Institute; Environmental and Rural Science, University of New England.; NSW Department of Primary Industries, Agricultural Research Centre. Australia; NSW Department of Primary Industries, Agricultural Research Centre. Australia; JOSÉ IGNACIO VELAZCO DE LOS REYES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Predicting metabolisable energy intake by free-ranging cattle using multiple short-term breath samples and applied to a pasture case-study. (Article in Press) |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Animal Production Science, 4 Nov. 2020, 61(4), p. 381-389 Doi: https://doi.org/10.1071/AN20162 |
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DOI : |
10.1071/AN20162 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 3 April 2020, accepted 11 October 2020, published online 4 November 2020. |
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Contenido : |
Context. Research into improving feed efficiency by ruminant animals grazing pastures has historically been restrained by an inability to measure feed intake by large numbers of individual animals. Recent advances in portable breath measurement technology could be useful for this purpose but methodologies need to be developed.
Aims. To evaluate predictive models for metabolisable energy intake (MEI) by free-ranging cattle using multiple short-term breath samples and then apply these to predict MEI by free-ranging cattle in a historic grazing experiment with cattle genetically divergent for residual feed intake (feed efficiency).
Methods. Predictive models for MEI were developed using bodyweight (BW) data, and carbon dioxide production rate (CPR) and methane production rate (MPR) from multiple short-term breath measurements, from an experiment with long-fed Angus steers on a grain-based diet, and an experiment with short-fed Angus heifers on a roughage diet.
Heat production was calculated using CPR and MPR. Energy retained (ER) in body tissue gain by steers was calculated from BW, ADG, initial and final subcutaneous fat depths, and for both groups using feeding-standards equations.
Key results. Metabolic mid-test BW (MBW) explained 49 and 47% of the variation in MEI in the steer and heifer experiment, respectively, and for the steers adding ADG and then subcutaneous fat gain resulted in the models accounting for 60 and then 65% of the variation in MEI. In the steer experiment, MBW with CPR explained 57% of the variation in MEI, and including MPR did not account for any additional variation. In the heifer experiment, MBW with CPR explained 50%, and with MPR accounted for 52% of the variation in MEI. Heat production plus ER explained 60, 35 and 85% of the variation in MEI in the steer and the heifer experiments, and in the pooled data from both experiments, respectively.
Conclusions. Multiple short-term breath measurements, together simple BW data, can be used to predict MEI by free-ranging cattle in studies in which animals do not have feed-intake or ADG recorded.
Implications. This methodology can be used for research into improving feed efficiency by farm animals grazing pastures. MenosContext. Research into improving feed efficiency by ruminant animals grazing pastures has historically been restrained by an inability to measure feed intake by large numbers of individual animals. Recent advances in portable breath measurement technology could be useful for this purpose but methodologies need to be developed.
Aims. To evaluate predictive models for metabolisable energy intake (MEI) by free-ranging cattle using multiple short-term breath samples and then apply these to predict MEI by free-ranging cattle in a historic grazing experiment with cattle genetically divergent for residual feed intake (feed efficiency).
Methods. Predictive models for MEI were developed using bodyweight (BW) data, and carbon dioxide production rate (CPR) and methane production rate (MPR) from multiple short-term breath measurements, from an experiment with long-fed Angus steers on a grain-based diet, and an experiment with short-fed Angus heifers on a roughage diet.
Heat production was calculated using CPR and MPR. Energy retained (ER) in body tissue gain by steers was calculated from BW, ADG, initial and final subcutaneous fat depths, and for both groups using feeding-standards equations.
Key results. Metabolic mid-test BW (MBW) explained 49 and 47% of the variation in MEI in the steer and heifer experiment, respectively, and for the steers adding ADG and then subcutaneous fat gain resulted in the models accounting for 60 and then 65% of the variation in MEI. In the steer experiment... Presentar Todo |
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Palabras claves : |
AVERAGE DAILY GAIN; CARBON DIOXIDE; FEED EFFICIENCY; FEED INTAKE; GRAZING; METABOLISABLE ENERGY INTAKE; METHANE; METHANE PRODUCTION RATE; OXYGEN; PASTURE. |
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Asunto categoría : |
L02 Alimentación animal |
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Marc : |
LEADER 03329naa a2200325 a 4500
001 1061522
005 2021-02-22
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1071/AN20162$2DOI
100 1 $aHERD, R.M.
245 $aPredicting metabolisable energy intake by free-ranging cattle using multiple short-term breath samples and applied to a pasture case-study. (Article in Press)$h[electronic resource]
260 $c2020
500 $aArticle history: Received 3 April 2020, accepted 11 October 2020, published online 4 November 2020.
520 $aContext. Research into improving feed efficiency by ruminant animals grazing pastures has historically been restrained by an inability to measure feed intake by large numbers of individual animals. Recent advances in portable breath measurement technology could be useful for this purpose but methodologies need to be developed. Aims. To evaluate predictive models for metabolisable energy intake (MEI) by free-ranging cattle using multiple short-term breath samples and then apply these to predict MEI by free-ranging cattle in a historic grazing experiment with cattle genetically divergent for residual feed intake (feed efficiency). Methods. Predictive models for MEI were developed using bodyweight (BW) data, and carbon dioxide production rate (CPR) and methane production rate (MPR) from multiple short-term breath measurements, from an experiment with long-fed Angus steers on a grain-based diet, and an experiment with short-fed Angus heifers on a roughage diet. Heat production was calculated using CPR and MPR. Energy retained (ER) in body tissue gain by steers was calculated from BW, ADG, initial and final subcutaneous fat depths, and for both groups using feeding-standards equations. Key results. Metabolic mid-test BW (MBW) explained 49 and 47% of the variation in MEI in the steer and heifer experiment, respectively, and for the steers adding ADG and then subcutaneous fat gain resulted in the models accounting for 60 and then 65% of the variation in MEI. In the steer experiment, MBW with CPR explained 57% of the variation in MEI, and including MPR did not account for any additional variation. In the heifer experiment, MBW with CPR explained 50%, and with MPR accounted for 52% of the variation in MEI. Heat production plus ER explained 60, 35 and 85% of the variation in MEI in the steer and the heifer experiments, and in the pooled data from both experiments, respectively. Conclusions. Multiple short-term breath measurements, together simple BW data, can be used to predict MEI by free-ranging cattle in studies in which animals do not have feed-intake or ADG recorded. Implications. This methodology can be used for research into improving feed efficiency by farm animals grazing pastures.
653 $aAVERAGE DAILY GAIN
653 $aCARBON DIOXIDE
653 $aFEED EFFICIENCY
653 $aFEED INTAKE
653 $aGRAZING
653 $aMETABOLISABLE ENERGY INTAKE
653 $aMETHANE
653 $aMETHANE PRODUCTION RATE
653 $aOXYGEN
653 $aPASTURE
700 1 $aARTHUR, P.F.
700 1 $aHEGARTY, R.S.
700 1 $aBIRD-GARDINER, T.
700 1 $aDONOGHUE, K.A.
700 1 $aVELAZCO, J.I.
773 $tAnimal Production Science, 4 Nov. 2020, 61(4), p. 381-389 Doi: https://doi.org/10.1071/AN20162
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