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![](/consulta/web/img/deny.png) | Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha : |
18/09/2014 |
Actualizado : |
11/10/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
BANCHERO, G.; QUINTANS, G.; MARTIN, G.B.; MILTON, J.T.B.; LINDSAY, D.R. |
Afiliación : |
GEORGGET ELIZABETH BANCHERO HUNZIKER, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; GRACIELA QUINTANS ILARIA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
Título : |
Nutrition and colostrum production in sheep. 2. Metabolic and hormonal responses to different energy sources in the final stages of pregnancy. |
Fecha de publicación : |
2004 |
Fuente / Imprenta : |
Reproduction, Fertility and Development, 2004, v. 16, no. 6, p. 645-653. |
ISSN : |
1031-3613 |
DOI : |
10.1071/rd03092 |
Idioma : |
Inglés |
Notas : |
Article history: Submitted: 7 October 2003//Accepted: 3 June 2004//Published: 16 August 2004.
DOI: https://doi.org/10.1071/RD03092 |
Contenido : |
Abstract:
Lupins and maize, with similar concentrations of metabolisable energy, should produce similar responses in colostrum production at parturition when fed during the last week of pregnancy, but, in the present study, we tested the proposal that the physical form of whole lupins would restrict intake and, therefore, the response compared with cracked lupins or maize. Fifty-five twin-bearing ewes were divided into four groups: in the last 15 days of pregnancy, 14 were fed whole lupins, 13 were fed cracked lupins, 14 were fed cracked maize and 14 received no supplement. The cracked supplements were fed in increasing amounts for 6 days to avoid acidosis. The whole lupins were fed only from Day -8. All supplementary grains increased the intake of metabolisable energy by >35%, but only ewes eating maize accumulated significantly more colostrum at parturition: control, 207 g; cracked maize, 452 g; cracked lupins, 206 g; whole lupins, 231 g (P < 0.05). Plasma urea concentrations were extremely high (approximately 10 mmol L?1) for both groups eating lupins and approximately double those of control ewes or those receiving maize (P < 0.05). We conclude that gut distention is not a cause of a poor response to lupins, but the ammonia associated with near-toxic concentrations of plasma urea may be affecting the production of colostrum. |
Palabras claves : |
CALOSTRO; GESTACION; GLUCOSA; HORMONAS; INSULINA; LACTOGENESIS; OVINOS. |
Asunto categoría : |
-- |
Marc : |
LEADER 02293naa a2200289 a 4500 001 1050376 005 2019-10-11 008 2004 bl uuuu u00u1 u #d 022 $a1031-3613 024 7 $a10.1071/rd03092$2DOI 100 1 $aBANCHERO, G. 245 $aNutrition and colostrum production in sheep. 2. Metabolic and hormonal responses to different energy sources in the final stages of pregnancy. 260 $c2004 500 $aArticle history: Submitted: 7 October 2003//Accepted: 3 June 2004//Published: 16 August 2004. DOI: https://doi.org/10.1071/RD03092 520 $aAbstract: Lupins and maize, with similar concentrations of metabolisable energy, should produce similar responses in colostrum production at parturition when fed during the last week of pregnancy, but, in the present study, we tested the proposal that the physical form of whole lupins would restrict intake and, therefore, the response compared with cracked lupins or maize. Fifty-five twin-bearing ewes were divided into four groups: in the last 15 days of pregnancy, 14 were fed whole lupins, 13 were fed cracked lupins, 14 were fed cracked maize and 14 received no supplement. The cracked supplements were fed in increasing amounts for 6 days to avoid acidosis. The whole lupins were fed only from Day -8. All supplementary grains increased the intake of metabolisable energy by >35%, but only ewes eating maize accumulated significantly more colostrum at parturition: control, 207 g; cracked maize, 452 g; cracked lupins, 206 g; whole lupins, 231 g (P < 0.05). Plasma urea concentrations were extremely high (approximately 10 mmol L?1) for both groups eating lupins and approximately double those of control ewes or those receiving maize (P < 0.05). We conclude that gut distention is not a cause of a poor response to lupins, but the ammonia associated with near-toxic concentrations of plasma urea may be affecting the production of colostrum. 653 $aCALOSTRO 653 $aGESTACION 653 $aGLUCOSA 653 $aHORMONAS 653 $aINSULINA 653 $aLACTOGENESIS 653 $aOVINOS 700 1 $aQUINTANS, G. 700 1 $aMARTIN, G.B. 700 1 $aMILTON, J.T.B. 700 1 $aLINDSAY, D.R. 773 $tReproduction, Fertility and Development, 2004$gv. 16, no. 6, p. 645-653.
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela; INIA Treinta y Tres. |
Fecha actual : |
06/10/2014 |
Actualizado : |
31/07/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Nacionales |
Circulación / Nivel : |
B - 2 |
Autor : |
JORGE, G.; PÉREZ BIDEGAIN, M.; TERRA, J.A.; SAWCHIK, J. |
Afiliación : |
JOSÉ ALFREDO TERRA FERNÁNDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JORGE SAWCHIK PINTOS, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
Título : |
WEPP as a tool for enabling a more comprehensive analysis of the environmental impacts of soil erosion. |
Fecha de publicación : |
2012 |
Fuente / Imprenta : |
In: INTERNATIONAL SOIL TILLAGE RESEARCH ORGANIZATION. 19., SOCIEDAD URUGUAYA DE CIENCIA DEL SUELO, 4., 2012, Montevideo, UY. [Oral presentation]: paper no. 133. Montevideo, UY: ISTRO, 2012. |
Idioma : |
Español Inglés |
Notas : |
También publicado en: Agrociencia Uruguay, v. 16, n. especial, p. 268-273, 2012. |
Contenido : |
ABSTRACT.
Cropland area in Uruguay, mostly soybeans, increased 300% during the last decade due to expansion to new areas. Although no-tillage practices are generalized among farmers, soil erosion is still a major environmental and economic issue. A predictive tool as the Water Erosion Prediction Model Project (WEPP), based on soil processes, has never been used in Uruguay. The objective of this research was to evaluate the soil erosion impact of various managements of intensive agriculture on Mollisols of Uruguay, applying the WEPP erosion model. The model was fi rst adjusted and validated for annual erosion estimates of an Abruptic Argiudoll (Nash Sutcliffe (NS)= 0.81 and R2 = 0.89) and a
Vertic Argiudoll (NS= 0.86 and R2 = 0.90), and later applied to evaluate three Mollisols and one Vertisol with different soil managements. Treatments combined no tillage (NT) and reduced tillage (RT) with different crop rotations. Crop rotations were: continuous soybean (CS), soybean-wheat (SW), soybean-winter cover crop (S-Cover crop), cornsoybean-wheat-3/4 yr pasture (CSW-PPP/PPPP), and corn-soybean-wheat-soybean-wheat-3/4 yr pasture (CSWSWPPP/PPPP). Soil erosion under RT system or CS was always above 7Mg.ha-1 (T value). Pastures inclusion under NT showed values below 7 Mg.ha-1.WEPP simulated an average erosion rate below T for SW rotation with NT (100m; 3% slope) in three of the four soils studied. However, by varying the slope and the length of the hillslope, the range for which the average annual erosion remains below this level is limited (only 3% - 4%). Moreover, for those hillslopes
whose average annual erosion does not exceed the T value, there is still approximately a 25% probability that this may occur any given year. Our work highlights the potential of using WEPP in the development of criteria for assessing sustainability of soil management, alternative to T value of average annual erosion units, including risk analysis MenosABSTRACT.
Cropland area in Uruguay, mostly soybeans, increased 300% during the last decade due to expansion to new areas. Although no-tillage practices are generalized among farmers, soil erosion is still a major environmental and economic issue. A predictive tool as the Water Erosion Prediction Model Project (WEPP), based on soil processes, has never been used in Uruguay. The objective of this research was to evaluate the soil erosion impact of various managements of intensive agriculture on Mollisols of Uruguay, applying the WEPP erosion model. The model was fi rst adjusted and validated for annual erosion estimates of an Abruptic Argiudoll (Nash Sutcliffe (NS)= 0.81 and R2 = 0.89) and a
Vertic Argiudoll (NS= 0.86 and R2 = 0.90), and later applied to evaluate three Mollisols and one Vertisol with different soil managements. Treatments combined no tillage (NT) and reduced tillage (RT) with different crop rotations. Crop rotations were: continuous soybean (CS), soybean-wheat (SW), soybean-winter cover crop (S-Cover crop), cornsoybean-wheat-3/4 yr pasture (CSW-PPP/PPPP), and corn-soybean-wheat-soybean-wheat-3/4 yr pasture (CSWSWPPP/PPPP). Soil erosion under RT system or CS was always above 7Mg.ha-1 (T value). Pastures inclusion under NT showed values below 7 Mg.ha-1.WEPP simulated an average erosion rate below T for SW rotation with NT (100m; 3% slope) in three of the four soils studied. However, by varying the slope and the length of the hillslope, the range for which the a... Presentar Todo |
Palabras claves : |
WATER EROSION PREDICTION PROJECT MODEL; WEPP MODEL. |
Thesagro : |
EROSIÓN DEL SUELO; MODELOS; MODELOS DE PREDICCIÓN; URUGUAY; WATER EROSION PREDICTION PROJECT MODEL; WEPP MODEL. |
Asunto categoría : |
P36 Erosión conservación y recuperación del suelo |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/12187/1/Agrociencia-ISTRO-2012-2.-Gabriella-J..pdf
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Marc : |
LEADER 02940naa a2200265 a 4500 001 1050937 005 2019-07-31 008 2012 bl uuuu u00u1 u #d 100 1 $aJORGE, G. 245 $aWEPP as a tool for enabling a more comprehensive analysis of the environmental impacts of soil erosion. 260 $c2012 500 $aTambién publicado en: Agrociencia Uruguay, v. 16, n. especial, p. 268-273, 2012. 520 $aABSTRACT. Cropland area in Uruguay, mostly soybeans, increased 300% during the last decade due to expansion to new areas. Although no-tillage practices are generalized among farmers, soil erosion is still a major environmental and economic issue. A predictive tool as the Water Erosion Prediction Model Project (WEPP), based on soil processes, has never been used in Uruguay. The objective of this research was to evaluate the soil erosion impact of various managements of intensive agriculture on Mollisols of Uruguay, applying the WEPP erosion model. The model was fi rst adjusted and validated for annual erosion estimates of an Abruptic Argiudoll (Nash Sutcliffe (NS)= 0.81 and R2 = 0.89) and a Vertic Argiudoll (NS= 0.86 and R2 = 0.90), and later applied to evaluate three Mollisols and one Vertisol with different soil managements. Treatments combined no tillage (NT) and reduced tillage (RT) with different crop rotations. Crop rotations were: continuous soybean (CS), soybean-wheat (SW), soybean-winter cover crop (S-Cover crop), cornsoybean-wheat-3/4 yr pasture (CSW-PPP/PPPP), and corn-soybean-wheat-soybean-wheat-3/4 yr pasture (CSWSWPPP/PPPP). Soil erosion under RT system or CS was always above 7Mg.ha-1 (T value). Pastures inclusion under NT showed values below 7 Mg.ha-1.WEPP simulated an average erosion rate below T for SW rotation with NT (100m; 3% slope) in three of the four soils studied. However, by varying the slope and the length of the hillslope, the range for which the average annual erosion remains below this level is limited (only 3% - 4%). Moreover, for those hillslopes whose average annual erosion does not exceed the T value, there is still approximately a 25% probability that this may occur any given year. Our work highlights the potential of using WEPP in the development of criteria for assessing sustainability of soil management, alternative to T value of average annual erosion units, including risk analysis 650 $aEROSIÓN DEL SUELO 650 $aMODELOS 650 $aMODELOS DE PREDICCIÓN 650 $aURUGUAY 650 $aWATER EROSION PREDICTION PROJECT MODEL 650 $aWEPP MODEL 653 $aWATER EROSION PREDICTION PROJECT MODEL 653 $aWEPP MODEL 700 1 $aPÉREZ BIDEGAIN, M. 700 1 $aTERRA, J.A. 700 1 $aSAWCHIK, J. 773 $tIn: INTERNATIONAL SOIL TILLAGE RESEARCH ORGANIZATION. 19., SOCIEDAD URUGUAYA DE CIENCIA DEL SUELO, 4., 2012, Montevideo, UY. [Oral presentation]: paper no. 133. Montevideo, UY: ISTRO, 2012.
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