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 | Acceso al texto completo restringido a Biblioteca INIA Tacuarembó. Por información adicional contacte bibliotb@tb.inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha : |
10/09/2014 |
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Actualizado : |
13/05/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
GUGGERI, D.; MEIKLE, A.; CARRIQUIRY, M.; MONTOSSI, F.; DE BARBIERI, I. |
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Afiliación : |
DIANA MARGARITA GUGGERI GUIONET, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANA MEIKLE, Universidad de la República (UdelaR)/ Facultad de Veterinaria; MARIANA CARRIQUIRY, Universidad de la República (UdelaR)/ Facultad de Veterinaria; FABIO MARCELO MONTOSSI PORCHILE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; LUIS IGNACIO DE BARBIERI ETCHEBERRY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Effect of different management systems on growth, endocrine parameters and puberty in Hereford female calves grazing campos grassland. |
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Fecha de publicación : |
2014 |
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Fuente / Imprenta : |
Livestock Science, Volume 167, September 2014, Pages 455-462. DOI: http://dx.doi.org/10.1016/j.livsci.2014.06.026 |
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ISSN : |
03016226 |
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DOI : |
10.1016/j.livsci.2014.06.026 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 8March2014; Received in revised form 26 June2014; Accepted 30June 2014. Acknowledgments: The authors would like to thank Pablo Cuadro, Juan Manuel Egaña, Rosario Cuadrado and all the staff at Glencoe Research Station for their excellent work during the experiment. Thanks are due to Juan Manuel Soares de Lima, for his advice and guide in performing the statistical analysis. Corresponding author: cvinoles@adinet.com.uy |
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Contenido : |
This study compared different management systems applied early in life on body development, endocrine parameters and age at puberty in beef heifers grazing Campos grassland, from 75 to 539±1.5 days of age. Calves were allocated to three treatments: 1) Early weaning (EW, n=15) at 75±1.5 days of age; 2) Traditional weaning (TW, n=14) at 158±1.5 days of age; 3) Traditional weaning plus creep feeding (TW+CF, n=17). Early weaned and TW+CF calves received a supplement that supplied 26±1.1% of crude protein and 11.7±0.04 MJ ME/kg DM from 75 to 158±1.5 days. Traditional weaned calves had a greater average daily weight gain (0.86±0.03 kg/day; ADWG) than EW calves (0.75±0.03 kg/day) from 75 to 158±1.5 days, associated with greater IGF-I concentrations at the time of TW (112.9±10.7 and 63.4±10.3 ng/mL respectively; P<0.05) that had no impact on age at puberty. Traditional weaning plus CF calves had a superior ADWG from 75 to 158±1.5 days (1.25±0.03 kg/day; P<0.05), greater concentrations of IGF-I at weaning (185.3±9.6 ng/mL), were heavier and taller (P<0.02) from weaning to 539±1.5 days, and puberty occurred earlier (472±8.0 days of age) than EW (526±7.2 days of age; P<0.05) and tended to occur earlier than TW calves (484±3.4 days of age; P=0.06). We conclude that age at weaning had a short-term impact on body growth and IGF-I concentrations, that had no effects on the age at puberty. However, CF induced a faster body development, which was related to an earlier attainment of puberty. |
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Palabras claves : |
BEEF CATTLE; EARLY WEANING; GANADERÍA; METABOLIC HORMONES; NUTRITION; PUBERTY. |
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Thesagro : |
GANADO DE CARNE; NUTRICION. |
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Asunto categoría : |
L01 Ganadería |
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Marc : |
LEADER 02871naa a2200301 a 4500
001 1050096
005 2020-05-13
008 2014 bl uuuu u00u1 u #d
022 $a03016226
024 7 $a10.1016/j.livsci.2014.06.026$2DOI
100 1 $aGUGGERI, D.
245 $aEffect of different management systems on growth, endocrine parameters and puberty in Hereford female calves grazing campos grassland.
260 $c2014
500 $aArticle history: Received 8March2014; Received in revised form 26 June2014; Accepted 30June 2014. Acknowledgments: The authors would like to thank Pablo Cuadro, Juan Manuel Egaña, Rosario Cuadrado and all the staff at Glencoe Research Station for their excellent work during the experiment. Thanks are due to Juan Manuel Soares de Lima, for his advice and guide in performing the statistical analysis. Corresponding author: cvinoles@adinet.com.uy
520 $aThis study compared different management systems applied early in life on body development, endocrine parameters and age at puberty in beef heifers grazing Campos grassland, from 75 to 539±1.5 days of age. Calves were allocated to three treatments: 1) Early weaning (EW, n=15) at 75±1.5 days of age; 2) Traditional weaning (TW, n=14) at 158±1.5 days of age; 3) Traditional weaning plus creep feeding (TW+CF, n=17). Early weaned and TW+CF calves received a supplement that supplied 26±1.1% of crude protein and 11.7±0.04 MJ ME/kg DM from 75 to 158±1.5 days. Traditional weaned calves had a greater average daily weight gain (0.86±0.03 kg/day; ADWG) than EW calves (0.75±0.03 kg/day) from 75 to 158±1.5 days, associated with greater IGF-I concentrations at the time of TW (112.9±10.7 and 63.4±10.3 ng/mL respectively; P<0.05) that had no impact on age at puberty. Traditional weaning plus CF calves had a superior ADWG from 75 to 158±1.5 days (1.25±0.03 kg/day; P<0.05), greater concentrations of IGF-I at weaning (185.3±9.6 ng/mL), were heavier and taller (P<0.02) from weaning to 539±1.5 days, and puberty occurred earlier (472±8.0 days of age) than EW (526±7.2 days of age; P<0.05) and tended to occur earlier than TW calves (484±3.4 days of age; P=0.06). We conclude that age at weaning had a short-term impact on body growth and IGF-I concentrations, that had no effects on the age at puberty. However, CF induced a faster body development, which was related to an earlier attainment of puberty.
650 $aGANADO DE CARNE
650 $aNUTRICION
653 $aBEEF CATTLE
653 $aEARLY WEANING
653 $aGANADERÍA
653 $aMETABOLIC HORMONES
653 $aNUTRITION
653 $aPUBERTY
700 1 $aMEIKLE, A.
700 1 $aCARRIQUIRY, M.
700 1 $aMONTOSSI, F.
700 1 $aDE BARBIERI, I.
773 $tLivestock Science, Volume 167, September 2014, Pages 455-462. DOI: http://dx.doi.org/10.1016/j.livsci.2014.06.026
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INIA Tacuarembó (TBO) |
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| Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
09/09/2014 |
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Actualizado : |
19/09/2018 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
A - 1 |
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Autor : |
LEONI, C.; TER BRAAK, C. J. F.; GILSANZ, J.C.; DOGLIOTTI, S.; ROSSING, W.A.H.; VAN BRUGGEN, A.H.C. |
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Afiliación : |
CAROLINA LEONI VELAZCO, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; JUAN CARLOS GILSANZ MARTINEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SANTIAGO DOGLIOTTI MORO, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Sclerotium rolfsii dynamics in soil as affected by crop sequences. |
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Fecha de publicación : |
2014 |
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Fuente / Imprenta : |
Applied Soil Ecology, 2014, v.75, p.95-105. |
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ISSN : |
0929-1393 |
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DOI : |
http://dx.doi.org/10.1016/j.apsoil.2013.11.002 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 13 June 2013 // Received in revised form 11 October 2013 // Accepted 3 November 2013. |
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Contenido : |
ABSTRACT.
Crop rotation has been used for the management of soilborne diseases for centuries, but has not often been planned based on scientific knowledge. Our objective was to generate information on Sclerotium rolfsii dynamics under different crop or intercrop activities, and design and test a research approach where simple experiments and the use of models are combined to explore crop sequences that minimize Southern blight incidence.The effect of seventeen green manure (GM) amendments on sclerotia dynamics was analyzed in greenhouse and field plot experiments during two years. The relative densities of viable sclerotia 90 days after winter GM (WGM) incorporation were generally lower than after summer GM (SGM) incorporation, with average recovery values of 60% and 61% for WGM in the field, 66% and 43% for WGM in the greenhouse, and 162% to 91% for SGM in the greenhouse, in 2009 and 2010, respectively. Sclerotia survival on day d after GM amendment was described by the model Sf=Si×exp(-b×d), relating initial (Si) and final (Sf) sclerotia densities. Relative decay rates of the sclerotia (b) in SGM amended soil were largest for alfalfa (0.0077±0.0031day-1) and sudangrass (0.0072±0.0030day-1). In WGM amended soil, the largest b values were for oat (0.0096±0.0024day-1), wheat (0.0090±0.0024day-1) and alfalfa (0.0087±0.0023day-1).The effect of three cropping sequences (sweet pepper-fallow, sweet pepper-black oat and sweet pepper-onion) on sclerotia dynamics was analyzed in microplot experiments, and the data were used to calibrate the model Pf=Pi/(?+?Pi), relating initial (Pi) and final (Pf) sclerotia densities. Median values for the relative rate of population increase at low Pi (1/?, dimension less) and the asymptote (1/?, number of viable sclerotia in 100g of dry soil) were 8.22 and 4.17 for black oat (BO), 1.13 and 8.64 for onion (O), and 6.26 and 17.93 for sweet pepper (SwP).By concatenating the two models, sclerotia population dynamics under several crop sequences were simulated. At steady state, the sequence SwP-O-Fallow-BO resulted in the lowest long-term sclerotia density (7.09. sclerotia/100. g soil), and SwP-Fallow in the highest (17.89. sclerotia/100. g soil). The developed methodology facilitates the selection of a limited number of rotation options to be tested in farmers' fields.
© 2013 Elsevier B.V. MenosABSTRACT.
Crop rotation has been used for the management of soilborne diseases for centuries, but has not often been planned based on scientific knowledge. Our objective was to generate information on Sclerotium rolfsii dynamics under different crop or intercrop activities, and design and test a research approach where simple experiments and the use of models are combined to explore crop sequences that minimize Southern blight incidence.The effect of seventeen green manure (GM) amendments on sclerotia dynamics was analyzed in greenhouse and field plot experiments during two years. The relative densities of viable sclerotia 90 days after winter GM (WGM) incorporation were generally lower than after summer GM (SGM) incorporation, with average recovery values of 60% and 61% for WGM in the field, 66% and 43% for WGM in the greenhouse, and 162% to 91% for SGM in the greenhouse, in 2009 and 2010, respectively. Sclerotia survival on day d after GM amendment was described by the model Sf=Si×exp(-b×d), relating initial (Si) and final (Sf) sclerotia densities. Relative decay rates of the sclerotia (b) in SGM amended soil were largest for alfalfa (0.0077±0.0031day-1) and sudangrass (0.0072±0.0030day-1). In WGM amended soil, the largest b values were for oat (0.0096±0.0024day-1), wheat (0.0090±0.0024day-1) and alfalfa (0.0087±0.0023day-1).The effect of three cropping sequences (sweet pepper-fallow, sweet pepper-black oat and sweet pepper-onion) on sclerotia dynamics was analyzed in mic... Presentar Todo |
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Palabras claves : |
CROP ROTATION; GREEN MANURE AMENDMENT; POPULATION DYNAMICS; SIMULATION MODEL. |
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Thesagro : |
ABONOS VERDES; DINÁMICA DE LA POBLACIÓN; MODELOS DE SIMULACIÓN; ROTACIÓN DE CULTIVOS; SCLEROTIUM ROLFSII. |
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Asunto categoría : |
A50 Investigación agraria |
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Marc : |
LEADER 03425naa a2200325 a 4500
001 1050056
005 2018-09-19
008 2014 bl uuuu u00u1 u #d
022 $a0929-1393
024 7 $ahttp://dx.doi.org/10.1016/j.apsoil.2013.11.002$2DOI
100 1 $aLEONI, C.
245 $aSclerotium rolfsii dynamics in soil as affected by crop sequences.$h[electronic resource]
260 $c2014
500 $aArticle history: Received 13 June 2013 // Received in revised form 11 October 2013 // Accepted 3 November 2013.
520 $aABSTRACT. Crop rotation has been used for the management of soilborne diseases for centuries, but has not often been planned based on scientific knowledge. Our objective was to generate information on Sclerotium rolfsii dynamics under different crop or intercrop activities, and design and test a research approach where simple experiments and the use of models are combined to explore crop sequences that minimize Southern blight incidence.The effect of seventeen green manure (GM) amendments on sclerotia dynamics was analyzed in greenhouse and field plot experiments during two years. The relative densities of viable sclerotia 90 days after winter GM (WGM) incorporation were generally lower than after summer GM (SGM) incorporation, with average recovery values of 60% and 61% for WGM in the field, 66% and 43% for WGM in the greenhouse, and 162% to 91% for SGM in the greenhouse, in 2009 and 2010, respectively. Sclerotia survival on day d after GM amendment was described by the model Sf=Si×exp(-b×d), relating initial (Si) and final (Sf) sclerotia densities. Relative decay rates of the sclerotia (b) in SGM amended soil were largest for alfalfa (0.0077±0.0031day-1) and sudangrass (0.0072±0.0030day-1). In WGM amended soil, the largest b values were for oat (0.0096±0.0024day-1), wheat (0.0090±0.0024day-1) and alfalfa (0.0087±0.0023day-1).The effect of three cropping sequences (sweet pepper-fallow, sweet pepper-black oat and sweet pepper-onion) on sclerotia dynamics was analyzed in microplot experiments, and the data were used to calibrate the model Pf=Pi/(?+?Pi), relating initial (Pi) and final (Pf) sclerotia densities. Median values for the relative rate of population increase at low Pi (1/?, dimension less) and the asymptote (1/?, number of viable sclerotia in 100g of dry soil) were 8.22 and 4.17 for black oat (BO), 1.13 and 8.64 for onion (O), and 6.26 and 17.93 for sweet pepper (SwP).By concatenating the two models, sclerotia population dynamics under several crop sequences were simulated. At steady state, the sequence SwP-O-Fallow-BO resulted in the lowest long-term sclerotia density (7.09. sclerotia/100. g soil), and SwP-Fallow in the highest (17.89. sclerotia/100. g soil). The developed methodology facilitates the selection of a limited number of rotation options to be tested in farmers' fields. © 2013 Elsevier B.V.
650 $aABONOS VERDES
650 $aDINÁMICA DE LA POBLACIÓN
650 $aMODELOS DE SIMULACIÓN
650 $aROTACIÓN DE CULTIVOS
650 $aSCLEROTIUM ROLFSII
653 $aCROP ROTATION
653 $aGREEN MANURE AMENDMENT
653 $aPOPULATION DYNAMICS
653 $aSIMULATION MODEL
700 1 $aTER BRAAK, C. J. F.
700 1 $aGILSANZ, J.C.
700 1 $aDOGLIOTTI, S.
700 1 $aROSSING, W.A.H.
700 1 $aVAN BRUGGEN, A.H.C.
773 $tApplied Soil Ecology, 2014$gv.75, p.95-105.
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