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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
12/09/2014 |
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Actualizado : |
29/01/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
UNGERFELD, R.; QUINTANS, G.; ENRÍQUEZ, D.H.; HÖTZEL, M.J. |
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Afiliación : |
GRACIELA QUINTANS ILARIA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Behavioural changes at weaning in 6-month-old beef calves reared by cows of high or low milk yield. |
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Fecha de publicación : |
2009 |
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Fuente / Imprenta : |
Animal Production Science, 2009, v. 49, no. 8, p. 637-642. |
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DOI : |
10.1071/AN09037 |
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Idioma : |
Inglés |
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Notas : |
Article history: Manuscript received 5 March 2009, accepted 9 May 2009. |
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Contenido : |
Abstract:
The objective of this experiment was to determine the differences in behavioural changes observed in 6-month-old beef calves at weaning in relation to milk yield availability from their dams. Eighteen Hereford or Hereford· Angus crossbred primiparous cows from a single herd remained with their calves suckling until the beginning of the experiment (194.1 1.9 days after calving). On day 0, calves were moved to a 100-m2 corral far from their mothers, which were taken to a field more than 1000 m away, and returned to the original paddock on day 1. Milk production was determined monthly during the lactation period in 14 of the 18 cows. Calves? behaviour was recorded using instantaneous sampling of individual animals in each group every 10 min from 0800 to 0950, 1200 to 1350, and 1600 to 1750 hours. Recordings were performed from day ?3 to day 5, except on day 0. The calves from the five cows with higher milk yield (HMY) and the calves from the five cows with lower milk yield (LMY) were considered for data analysis. Milk yield was greater in HMY than LMY cows throughout all the lactation. HMY calves tended to suckle more frequently than LMY calves. There were no differences in average daily gain after weaning between HMY and LMY calves. However, HMY calves were heavier at weaning than LMY calves. The frequency of grazing, ruminating, walking and standing differed between HMY and LMY calves, and was affected by weaning. For example, calves from HMY cows spent less time grazing before and after weaning than calves from LMY cows. There were also interactions between group and time on the frequency of these behaviours. Overall, we conclude that the behaviour of 6-month-old beef calves at weaning differed according to their mothers? milk yield, and their developmental growth stage. MenosAbstract:
The objective of this experiment was to determine the differences in behavioural changes observed in 6-month-old beef calves at weaning in relation to milk yield availability from their dams. Eighteen Hereford or Hereford· Angus crossbred primiparous cows from a single herd remained with their calves suckling until the beginning of the experiment (194.1 1.9 days after calving). On day 0, calves were moved to a 100-m2 corral far from their mothers, which were taken to a field more than 1000 m away, and returned to the original paddock on day 1. Milk production was determined monthly during the lactation period in 14 of the 18 cows. Calves? behaviour was recorded using instantaneous sampling of individual animals in each group every 10 min from 0800 to 0950, 1200 to 1350, and 1600 to 1750 hours. Recordings were performed from day ?3 to day 5, except on day 0. The calves from the five cows with higher milk yield (HMY) and the calves from the five cows with lower milk yield (LMY) were considered for data analysis. Milk yield was greater in HMY than LMY cows throughout all the lactation. HMY calves tended to suckle more frequently than LMY calves. There were no differences in average daily gain after weaning between HMY and LMY calves. However, HMY calves were heavier at weaning than LMY calves. The frequency of grazing, ruminating, walking and standing differed between HMY and LMY calves, and was affected by weaning. For example, calves from HMY cows spent less time g... Presentar Todo |
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Palabras claves : |
BEEF CALVES. |
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Thesagro : |
DESTETE PRECOZ; GANADO LECHERO; TERNEROS. |
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Asunto categoría : |
L02 Alimentación animal |
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Marc : |
LEADER 02548naa a2200229 a 4500
001 1050221
005 2020-01-29
008 2009 bl uuuu u00u1 u #d
024 7 $a10.1071/AN09037$2DOI
100 1 $aUNGERFELD, R.
245 $aBehavioural changes at weaning in 6-month-old beef calves reared by cows of high or low milk yield.$h[electronic resource]
260 $c2009
500 $aArticle history: Manuscript received 5 March 2009, accepted 9 May 2009.
520 $aAbstract: The objective of this experiment was to determine the differences in behavioural changes observed in 6-month-old beef calves at weaning in relation to milk yield availability from their dams. Eighteen Hereford or Hereford· Angus crossbred primiparous cows from a single herd remained with their calves suckling until the beginning of the experiment (194.1 1.9 days after calving). On day 0, calves were moved to a 100-m2 corral far from their mothers, which were taken to a field more than 1000 m away, and returned to the original paddock on day 1. Milk production was determined monthly during the lactation period in 14 of the 18 cows. Calves? behaviour was recorded using instantaneous sampling of individual animals in each group every 10 min from 0800 to 0950, 1200 to 1350, and 1600 to 1750 hours. Recordings were performed from day ?3 to day 5, except on day 0. The calves from the five cows with higher milk yield (HMY) and the calves from the five cows with lower milk yield (LMY) were considered for data analysis. Milk yield was greater in HMY than LMY cows throughout all the lactation. HMY calves tended to suckle more frequently than LMY calves. There were no differences in average daily gain after weaning between HMY and LMY calves. However, HMY calves were heavier at weaning than LMY calves. The frequency of grazing, ruminating, walking and standing differed between HMY and LMY calves, and was affected by weaning. For example, calves from HMY cows spent less time grazing before and after weaning than calves from LMY cows. There were also interactions between group and time on the frequency of these behaviours. Overall, we conclude that the behaviour of 6-month-old beef calves at weaning differed according to their mothers? milk yield, and their developmental growth stage.
650 $aDESTETE PRECOZ
650 $aGANADO LECHERO
650 $aTERNEROS
653 $aBEEF CALVES
700 1 $aQUINTANS, G.
700 1 $aENRÍQUEZ, D.H.
700 1 $aHÖTZEL, M.J.
773 $tAnimal Production Science, 2009$gv. 49, no. 8, p. 637-642.
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INIA Treinta y Tres (TT) |
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
03/10/2019 |
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Actualizado : |
20/04/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
PUPPO. L.; GARCIA, C.; BAUTISTA, E.; HUNSAKER, D.J.; BERETTA, A.; GIRONA, J. |
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Afiliación : |
LUCÍA PUPPO, Universidad de la República, Facultad de Agronomía, Departamento de Suelos y Aguas, Grupo Disciplinario de Ingeniería Agrícola, Uruguay.; CLAUDIO CESAR GARCIA GALLARRETA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; EDUARDO BAUTISTA, USDA-ARS, Arid Land Agricultural Research Center, United States.; DOUGLAS J. HUNSAKER, USDA-ARS, Arid Land Agricultural Research Center, United States.; ANDRÉS BERETTA, Universidad de la República, Facultad de Agronomía, Departamento de Suelos y Aguas, Grupo Disciplinario Suelos, Uruguay.; JOAN GIRONA, Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Àrea de Tecnologia Frutícola, Catalunya, Spain. |
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Título : |
Seasonal basal crop coefficient pattern of young non-bearing olive trees grown in drainage lysimeters in a temperate sub-humid climate. |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
Agricultural Water Management, 20 December 2019, Volume 226, Article number 105732. Doi:https://doi.org/10.1016/j.agwat.2019.105732 |
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ISSN : |
0378-3774 |
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DOI : |
10.1016/j.agwat.2019.105732 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 23 September 2018 / Received in revised form 17 June 2019 / Accepted 28 July 2019. |
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Contenido : |
ABSTRACT.
Young non-bearing olive trees were grown in drainage lysimeters and their water consumption was measured over two consecutive yearly-experimental periods to analyze the effect ofseasonal variations on the basal crop coefficient (Kcb). Micro-lysimeter measurements were used to quantify soil evaporation (Es) and Es was subtracted from evapotranspiration (ETc) to determine transpiration. Monthly mean (Kcb) were determined as (ETc-Es)/ETo, where ETo is the FAO-PM grass-reference evapotranspiration, calculated from locally measured weather data. The observed Kcb value at mid-season, 0.38, was obtained in the fall months, with 41% of canopy cover. The mid-season Kcb when adjusted to the FAO-56 standard climate was 0.43. Seasonal patterns of Kcb are presented and the Kcb value during the mid-season growth-stage was found to be similar to those described in the literature for Mediterranean climates. Variation of the basal crop coefficient was satisfactorily explained by measured canopy light interception (FIR) and a linear regression model is presented for Kcb as a function of FIR.
© 2019 Elsevier B.V. |
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Palabras claves : |
Crop coefficients; Evapotranspiration; Irrigation requirements; Soil water content. |
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Thesagro : |
OLEA EUROPAEA L; OLIVOS. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 02174naa a2200289 a 4500
001 1060271
005 2020-04-20
008 2019 bl uuuu u00u1 u #d
022 $a0378-3774
024 7 $a10.1016/j.agwat.2019.105732$2DOI
100 1 $aPUPPO. L.
245 $aSeasonal basal crop coefficient pattern of young non-bearing olive trees grown in drainage lysimeters in a temperate sub-humid climate.$h[electronic resource]
260 $c2019
500 $aArticle history: Received 23 September 2018 / Received in revised form 17 June 2019 / Accepted 28 July 2019.
520 $aABSTRACT. Young non-bearing olive trees were grown in drainage lysimeters and their water consumption was measured over two consecutive yearly-experimental periods to analyze the effect ofseasonal variations on the basal crop coefficient (Kcb). Micro-lysimeter measurements were used to quantify soil evaporation (Es) and Es was subtracted from evapotranspiration (ETc) to determine transpiration. Monthly mean (Kcb) were determined as (ETc-Es)/ETo, where ETo is the FAO-PM grass-reference evapotranspiration, calculated from locally measured weather data. The observed Kcb value at mid-season, 0.38, was obtained in the fall months, with 41% of canopy cover. The mid-season Kcb when adjusted to the FAO-56 standard climate was 0.43. Seasonal patterns of Kcb are presented and the Kcb value during the mid-season growth-stage was found to be similar to those described in the literature for Mediterranean climates. Variation of the basal crop coefficient was satisfactorily explained by measured canopy light interception (FIR) and a linear regression model is presented for Kcb as a function of FIR. © 2019 Elsevier B.V.
650 $aOLEA EUROPAEA L
650 $aOLIVOS
653 $aCrop coefficients
653 $aEvapotranspiration
653 $aIrrigation requirements
653 $aSoil water content
700 1 $aGARCIA, C.
700 1 $aBAUTISTA, E.
700 1 $aHUNSAKER, D.J.
700 1 $aBERETTA, A.
700 1 $aGIRONA, J.
773 $tAgricultural Water Management, 20 December 2019, Volume 226, Article number 105732. Doi:https://doi.org/10.1016/j.agwat.2019.105732
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