| |
|
|
 | Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
|
Registro completo
|
|
Biblioteca (s) : |
INIA Treinta y Tres. |
|
Fecha : |
12/09/2014 |
|
Actualizado : |
29/01/2020 |
|
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
|
Autor : |
UNGERFELD, R.; QUINTANS, G.; ENRÍQUEZ, D.H.; HÖTZEL, M.J. |
|
Afiliación : |
GRACIELA QUINTANS ILARIA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
|
Título : |
Behavioural changes at weaning in 6-month-old beef calves reared by cows of high or low milk yield. |
|
Fecha de publicación : |
2009 |
|
Fuente / Imprenta : |
Animal Production Science, 2009, v. 49, no. 8, p. 637-642. |
|
DOI : |
10.1071/AN09037 |
|
Idioma : |
Inglés |
|
Notas : |
Article history: Manuscript received 5 March 2009, accepted 9 May 2009. |
|
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 |
|
Palabras claves : |
BEEF CALVES. |
|
Thesagro : |
DESTETE PRECOZ; GANADO LECHERO; TERNEROS. |
|
Asunto categoría : |
L02 Alimentación animal |
|
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.
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA Treinta y Tres (TT) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
|
|
| Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
|
Registro completo
|
|
Biblioteca (s) : |
INIA La Estanzuela; INIA Las Brujas. |
|
Fecha actual : |
17/10/2014 |
|
Actualizado : |
30/10/2019 |
|
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
|
Circulación / Nivel : |
A - 1 |
|
Autor : |
QUINCKE, M.; PETERSON, C.J.; ZEMETRA, R.S.; HANSEN, J.L.; CHEN, J.; RIERA-LIZARAZU, O.; MUNDT, C.C. |
|
Afiliación : |
MARTIN CONRADO QUINCKE WALDEN, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
|
Título : |
Quantitative trait loci analysis for resistance to cephalosporium stripe, a vascular wilt disease of wheat. |
|
Fecha de publicación : |
2011 |
|
Fuente / Imprenta : |
Theoretical and Applied Genetics, 2011, v.122, No.7, p.1339-1349. |
|
ISSN : |
0040-5752 |
|
DOI : |
10.1007/s00122-011-1535-6 |
|
Idioma : |
Inglés |
|
Notas : |
Article history: Received: 20 August 2010 / Accepted: 6 January 2011 / Published online: 23 January 2011. |
|
Contenido : |
ABSTRACT.
Cephalosporium stripe, caused by Cephalosporium gramineum, can cause severe loss of wheat (Triticum aestivum L.) yield and grain quality and can be an important factor limiting adoption of conservation tillage practices. Selecting for resistance to Cephalosporium stripe is problematic; however, as optimum conditions for disease do not occur annually under natural conditions, inoculum levels can be spatially heterogeneous, and little is known about the inheritance of resistance. A population of 268 recombinant inbred lines (RILs) derived from a cross between two wheat cultivars was characterized using field screening and molecular markers to investigate the inheritance of resistance to Cephalosporium stripe. Whiteheads (sterile heads caused by pathogen infection) were measure on each RIL in three field environments under artificially inoculated conditions. A linkage map for this population was created based on 204 SSR and DArT markers. A total of 36 linkage groups were resolved, representing portions of all chromosomes except for chromosome 1D, which lacked a sufficient number of polymorphic markers. Quantitative trait locus (QTL) analysis identified seven regions associated with resistance to Cephalosporium stripe, with approximately equal additive effects. Four QTL derived from the more susceptible parent (Brundage) and three came from the more resistant parent (Coda), but the cumulative, additive effect of QTL from Coda was greater than that of Brundage. Additivity of QTL effects was confirmed through regression analysis and demonstrates the advantage of accumulating multiple QTL alleles to achieve high levels of resistanc.
© Springer-Verlag 2011. MenosABSTRACT.
Cephalosporium stripe, caused by Cephalosporium gramineum, can cause severe loss of wheat (Triticum aestivum L.) yield and grain quality and can be an important factor limiting adoption of conservation tillage practices. Selecting for resistance to Cephalosporium stripe is problematic; however, as optimum conditions for disease do not occur annually under natural conditions, inoculum levels can be spatially heterogeneous, and little is known about the inheritance of resistance. A population of 268 recombinant inbred lines (RILs) derived from a cross between two wheat cultivars was characterized using field screening and molecular markers to investigate the inheritance of resistance to Cephalosporium stripe. Whiteheads (sterile heads caused by pathogen infection) were measure on each RIL in three field environments under artificially inoculated conditions. A linkage map for this population was created based on 204 SSR and DArT markers. A total of 36 linkage groups were resolved, representing portions of all chromosomes except for chromosome 1D, which lacked a sufficient number of polymorphic markers. Quantitative trait locus (QTL) analysis identified seven regions associated with resistance to Cephalosporium stripe, with approximately equal additive effects. Four QTL derived from the more susceptible parent (Brundage) and three came from the more resistant parent (Coda), but the cumulative, additive effect of QTL from Coda was greater than that of Brundage. Additiv... Presentar Todo |
|
Palabras claves : |
CEPHALOSPORIUM ESTRIADO; CEPHALOSPORIUM FRANJA; CEPHALOSPORIUM GRAMINEUM; CEPHALOSPORIUM RAYADO; HYMENULA CEREALIS; QTLs; RESISTENCIA A ENFERMEDADES. |
|
Thesagro : |
CULTIVARES DE TRIGO; TRIGO; TRITICUM AESTIVUM. |
|
Asunto categoría : |
F30 Genética vegetal y fitomejoramiento
F60 Fisiología y bioquímica de la planta |
|
Marc : |
LEADER 02827naa a2200349 a 4500
001 1051171
005 2019-10-30
008 2011 bl uuuu u00u1 u #d
022 $a0040-5752
024 7 $a10.1007/s00122-011-1535-6$2DOI
100 1 $aQUINCKE, M.
245 $aQuantitative trait loci analysis for resistance to cephalosporium stripe, a vascular wilt disease of wheat.$h[electronic resource]
260 $c2011
500 $aArticle history: Received: 20 August 2010 / Accepted: 6 January 2011 / Published online: 23 January 2011.
520 $aABSTRACT. Cephalosporium stripe, caused by Cephalosporium gramineum, can cause severe loss of wheat (Triticum aestivum L.) yield and grain quality and can be an important factor limiting adoption of conservation tillage practices. Selecting for resistance to Cephalosporium stripe is problematic; however, as optimum conditions for disease do not occur annually under natural conditions, inoculum levels can be spatially heterogeneous, and little is known about the inheritance of resistance. A population of 268 recombinant inbred lines (RILs) derived from a cross between two wheat cultivars was characterized using field screening and molecular markers to investigate the inheritance of resistance to Cephalosporium stripe. Whiteheads (sterile heads caused by pathogen infection) were measure on each RIL in three field environments under artificially inoculated conditions. A linkage map for this population was created based on 204 SSR and DArT markers. A total of 36 linkage groups were resolved, representing portions of all chromosomes except for chromosome 1D, which lacked a sufficient number of polymorphic markers. Quantitative trait locus (QTL) analysis identified seven regions associated with resistance to Cephalosporium stripe, with approximately equal additive effects. Four QTL derived from the more susceptible parent (Brundage) and three came from the more resistant parent (Coda), but the cumulative, additive effect of QTL from Coda was greater than that of Brundage. Additivity of QTL effects was confirmed through regression analysis and demonstrates the advantage of accumulating multiple QTL alleles to achieve high levels of resistanc. © Springer-Verlag 2011.
650 $aCULTIVARES DE TRIGO
650 $aTRIGO
650 $aTRITICUM AESTIVUM
653 $aCEPHALOSPORIUM ESTRIADO
653 $aCEPHALOSPORIUM FRANJA
653 $aCEPHALOSPORIUM GRAMINEUM
653 $aCEPHALOSPORIUM RAYADO
653 $aHYMENULA CEREALIS
653 $aQTLs
653 $aRESISTENCIA A ENFERMEDADES
700 1 $aPETERSON, C.J.
700 1 $aZEMETRA, R.S.
700 1 $aHANSEN, J.L.
700 1 $aCHEN, J.
700 1 $aRIERA-LIZARAZU, O.
700 1 $aMUNDT, C.C.
773 $tTheoretical and Applied Genetics, 2011$gv.122, No.7, p.1339-1349.
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA Las Brujas (LB) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
| Expresión de búsqueda válido. Check! |
|
|
