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 | Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
22/02/2017 |
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Actualizado : |
04/07/2017 |
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Tipo de producción científica : |
Abstracts/Resúmenes |
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Autor : |
ESPIGOLAN, R.; BALDI, F.; BANCHERO, G.; BRITO, G.; LA MANNA, A.; ALBUQUERQUE, L.G. |
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Afiliación : |
RAFAEL ESPIGOLAN, Aluno de graduação do curso de Zootecnia da FCAVJ, Brasil.; FERNANDO BALDI, Aluno de Pós-doutorado do Departamento de Genética e Melhoramento Animal/FCAVJ. Bolsista da CAPES, Brasil.; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GUSTAVO WALTER BRITO DIAZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ALEJANDRO FRANCISCO LA MANNA ALONSO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; LUCIA GALVÃO DE ALBUQUERQUE, Professora Adjunta do Departamento de Genética e Melhoramento Animal. Bolsista do CNPQ e INCTA, Brasil. |
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Título : |
Efeito da estratégia de crescimento sobre as características de carcaça e da carne em novilhos da raça Hereford. |
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Fecha de publicación : |
2010 |
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Fuente / Imprenta : |
REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 47., 2010, Salvador, BA. Empreendedorismo e Progresso Científicos na Zootecnia
Brasileira de Vanguarda Brasília, DF: Sociedade Brasileira de Zootecnia: UEM, 2010. Anais |
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Idioma : |
Portugués |
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Contenido : |
Resumo: Objetivou-se, com este trabalho, estudar as características de carcaça e da carne de bovinos
Hereford submetidos a diferentes manejos nutricionais durante a recria e a terminação. Foram
empregados 4 manejos nutricionais durante a recria, com diferentes ganho de peso, e dois para
terminação (confinamento ou pasto). Foram utilizados 240 machos castrados. O abate dos animais foi
realizado em idades que variaram de 18 a 24 meses com, aproximadamente, 500 kg. A área de olho de
lombo e a espessura de gordura subcutânea foram influenciadas significativamente pelo tipo de
terminação, mostrando valores maiores no confinamento. O marmoreio foi influenciado
significativamente tanto pelo manejo de recria como de terminação. O peso da carcaça quente, assim
como os parâmetros de cor da carne foram influenciados pelos tipos de manejos nutricionais,
principalmente quando o acabamento foi em confinamento. |
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Palabras claves : |
COLOR DE LA CARNE; CONFINAMIENTO; TERMINACION DE NOVILLOS. |
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Thesagro : |
CALIDAD DE CARNE; GANADO DE CARNE. |
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Asunto categoría : |
L01 Ganadería |
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Marc : |
LEADER 01807nam a2200229 a 4500
001 1056701
005 2017-07-04
008 2010 bl uuuu u01u1 u #d
100 1 $aESPIGOLAN, R.
245 $aEfeito da estratégia de crescimento sobre as características de carcaça e da carne em novilhos da raça Hereford.$h[electronic resource]
260 $aREUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 47., 2010, Salvador, BA. Empreendedorismo e Progresso Científicos na Zootecnia Brasileira de Vanguarda Brasília, DF: Sociedade Brasileira de Zootecnia: UEM, 2010. Anais$c2010
520 $aResumo: Objetivou-se, com este trabalho, estudar as características de carcaça e da carne de bovinos Hereford submetidos a diferentes manejos nutricionais durante a recria e a terminação. Foram empregados 4 manejos nutricionais durante a recria, com diferentes ganho de peso, e dois para terminação (confinamento ou pasto). Foram utilizados 240 machos castrados. O abate dos animais foi realizado em idades que variaram de 18 a 24 meses com, aproximadamente, 500 kg. A área de olho de lombo e a espessura de gordura subcutânea foram influenciadas significativamente pelo tipo de terminação, mostrando valores maiores no confinamento. O marmoreio foi influenciado significativamente tanto pelo manejo de recria como de terminação. O peso da carcaça quente, assim como os parâmetros de cor da carne foram influenciados pelos tipos de manejos nutricionais, principalmente quando o acabamento foi em confinamento.
650 $aCALIDAD DE CARNE
650 $aGANADO DE CARNE
653 $aCOLOR DE LA CARNE
653 $aCONFINAMIENTO
653 $aTERMINACION DE NOVILLOS
700 1 $aBALDI, F.
700 1 $aBANCHERO, G.
700 1 $aBRITO, G.
700 1 $aLA MANNA, A.
700 1 $aALBUQUERQUE, L.G.
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Registro original : |
INIA La Estanzuela (LE) |
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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 : |
29/10/2014 |
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Actualizado : |
30/09/2019 |
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Tipo de producción científica : |
Trabajos en Congresos/Conferencias |
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Autor : |
DURAN, H.; LÓPEZ-VILLALOBOS, N.; ALLES, G.; LA MANNA, A.; RAVAGNOLO, O. |
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Afiliación : |
HENRY DURAN OUDRI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; N. LÓPEZ-VILLALOBOS, Massey University (NZ); ALEJANDRO FRANCISCO LA MANNA ALONSO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; OLGA RAVAGNOLO GUMILA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Development and validation of a mechanistic whole dairy farm model to evaluate farming strategies under grazing conditions in Uruguay. |
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Complemento del título : |
Conference Proceeding. |
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Fecha de publicación : |
2009 |
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Fuente / Imprenta : |
In:18th World IMACS Congress and MODSIM International Congress on Modelling and Simulation: Interfacing Modelling and Simulation with Mathematical and Computational Sciences, Proceedings. Cairns, Australia 13-17 July 2009, p.512-518. |
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Descripción física : |
2-s2.0-80053020568 |
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ISBN : |
978-097584007-8 |
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Idioma : |
Inglés |
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Notas : |
Sponsors: CSIRO, Australian Mathematical Sciences Institute, Griffith University,eWater Cooperative Research Centre, Department of Sustainability and Environment. |
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Contenido : |
ABSTRACT.
A mechanistic, dynamic whole farm simulation model was developed to evaluate the effect of farming strategies on the productivity of dairy grazing systems. The model integrates local available information on pasture growth and quality and current knowledge on animal nutrition and metabolism. The pastoral component simulates the pasture rotation structure of the farm, with variable number and size of paddocks, to which the user must assign a pasture type from an available database. Each pasture type is represented by initial herbage mass (HM) and two vectors: monthly dry matter (DM) growth rate values and organic matter digestibility (OMD) values. The model is driven by pasture growth rate (PGR) on a monthly interval step. Several pasture production and management strategies can be defined as a per paddock basis. The cows are defined in terms of their potential for milk production (MPP), body condition score (BCS, scale 1-5), biotype Frame (body weight with BCS of 3), calving date, and contents of fat and protein in milk. These variables are used to characterize the average of up to six groups of adult cows which are defined by the user to represent the current situation of a dairy farm or a theoretical system. Average grazing DM intake (DMI) of each calving group of cows is estimated considering animal factors: Frame, MPP and days in milk (DIM); pasture factors: OMD, pre-grazing HM (pg-HM) and substitution rate (SR) of supplementary feed. The model is based on metabolisable energy (ME) and environmental thermo neutrality is assumed. Total ME intake (MEI) is partitioned among body functions following a defined priority: maintenance, pregnancy, milk production potential and body reserves (BR). One distinct feature of this model is that the approach used implies an active role of BR in defining the partition of MEI. If ME balance for potential milk is not achieved then BR are mobilized at a constant rate (κ) to give an absolute amount which is proportional to the current size of estimated mass of BR, whose initial level is set when inputting the initial BCS. Another feature of this model is that it can manage decisions taken at different system levels (pasture rotation structure, annual DM yield and seasonal distribution, reserves production and supplementation strategies, variables stocking rates, effects of animal size, BCS, milk potential, etc.), to quantitatively assess the impact of these decisions on cows and farm productivity. The model output was initially validated at the "cow biotype level" using published farmlet trials. The relative prediction error (RPE) and concordance correlation coefficient (CCC) were used as measures of fitness; models with values of RPE less than 10% and values of CCC greater than 0.90 were considered to have significant predictive power. Daily milk yield per cow, live weight and BCS change through the lactation were validated using a set of 12 monthly values for each trait, obtained from cows of contrasting body sizes (Heavy and Light).The RPE and CCC were 16% and 0.94 in Heavy, 20% and 0.87 in Light cows for milk yield; 3% and 0.72 in Heavy, 2% and 0.81 in Light cows for live weight; 6% and 0.18 in Heavy and 9% and -0.47 in Light cows for BCS change. Monthly intake of pasture per ha was validated using another independent set of 12 average monthly values for each of 5 farmlet stocking rates treatments (2.2; 2.7; 3.1; 3.7 and 4.3 cows/ha). RPE and CCC were: 13% and 0.77; 9% and 0.87; 12% and 0.93; 13% and 0.91; 16% and 0.88 respectively. The model was responsive to contrasting cow type and farming management. These results show that the model has acceptable predictive power and can be used to better understand actual farming systems and also to evaluate the expected productive impact of some technical changes introduced at the farm level. MenosABSTRACT.
A mechanistic, dynamic whole farm simulation model was developed to evaluate the effect of farming strategies on the productivity of dairy grazing systems. The model integrates local available information on pasture growth and quality and current knowledge on animal nutrition and metabolism. The pastoral component simulates the pasture rotation structure of the farm, with variable number and size of paddocks, to which the user must assign a pasture type from an available database. Each pasture type is represented by initial herbage mass (HM) and two vectors: monthly dry matter (DM) growth rate values and organic matter digestibility (OMD) values. The model is driven by pasture growth rate (PGR) on a monthly interval step. Several pasture production and management strategies can be defined as a per paddock basis. The cows are defined in terms of their potential for milk production (MPP), body condition score (BCS, scale 1-5), biotype Frame (body weight with BCS of 3), calving date, and contents of fat and protein in milk. These variables are used to characterize the average of up to six groups of adult cows which are defined by the user to represent the current situation of a dairy farm or a theoretical system. Average grazing DM intake (DMI) of each calving group of cows is estimated considering animal factors: Frame, MPP and days in milk (DIM); pasture factors: OMD, pre-grazing HM (pg-HM) and substitution rate (SR) of supplementary feed. The model is based on met... Presentar Todo |
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Thesagro : |
GANADO DE LECHE; MATERIA SECA; PASTURAS; PRODUCCION DE LECHE; SISTEMAS DE CULTIVO. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 04979nam a2200253 a 4500
001 1051369
005 2019-09-30
008 2009 bl uuuu u01u1 u #d
020 $a978-097584007-8
100 1 $aDURAN, H.
245 $aDevelopment and validation of a mechanistic whole dairy farm model to evaluate farming strategies under grazing conditions in Uruguay.$h[electronic resource]
260 $aIn:18th World IMACS Congress and MODSIM International Congress on Modelling and Simulation: Interfacing Modelling and Simulation with Mathematical and Computational Sciences, Proceedings. Cairns, Australia 13-17 July 2009, p.512-518.$c2009
300 $c2-s2.0-80053020568
500 $aSponsors: CSIRO, Australian Mathematical Sciences Institute, Griffith University,eWater Cooperative Research Centre, Department of Sustainability and Environment.
520 $aABSTRACT. A mechanistic, dynamic whole farm simulation model was developed to evaluate the effect of farming strategies on the productivity of dairy grazing systems. The model integrates local available information on pasture growth and quality and current knowledge on animal nutrition and metabolism. The pastoral component simulates the pasture rotation structure of the farm, with variable number and size of paddocks, to which the user must assign a pasture type from an available database. Each pasture type is represented by initial herbage mass (HM) and two vectors: monthly dry matter (DM) growth rate values and organic matter digestibility (OMD) values. The model is driven by pasture growth rate (PGR) on a monthly interval step. Several pasture production and management strategies can be defined as a per paddock basis. The cows are defined in terms of their potential for milk production (MPP), body condition score (BCS, scale 1-5), biotype Frame (body weight with BCS of 3), calving date, and contents of fat and protein in milk. These variables are used to characterize the average of up to six groups of adult cows which are defined by the user to represent the current situation of a dairy farm or a theoretical system. Average grazing DM intake (DMI) of each calving group of cows is estimated considering animal factors: Frame, MPP and days in milk (DIM); pasture factors: OMD, pre-grazing HM (pg-HM) and substitution rate (SR) of supplementary feed. The model is based on metabolisable energy (ME) and environmental thermo neutrality is assumed. Total ME intake (MEI) is partitioned among body functions following a defined priority: maintenance, pregnancy, milk production potential and body reserves (BR). One distinct feature of this model is that the approach used implies an active role of BR in defining the partition of MEI. If ME balance for potential milk is not achieved then BR are mobilized at a constant rate (κ) to give an absolute amount which is proportional to the current size of estimated mass of BR, whose initial level is set when inputting the initial BCS. Another feature of this model is that it can manage decisions taken at different system levels (pasture rotation structure, annual DM yield and seasonal distribution, reserves production and supplementation strategies, variables stocking rates, effects of animal size, BCS, milk potential, etc.), to quantitatively assess the impact of these decisions on cows and farm productivity. The model output was initially validated at the "cow biotype level" using published farmlet trials. The relative prediction error (RPE) and concordance correlation coefficient (CCC) were used as measures of fitness; models with values of RPE less than 10% and values of CCC greater than 0.90 were considered to have significant predictive power. Daily milk yield per cow, live weight and BCS change through the lactation were validated using a set of 12 monthly values for each trait, obtained from cows of contrasting body sizes (Heavy and Light).The RPE and CCC were 16% and 0.94 in Heavy, 20% and 0.87 in Light cows for milk yield; 3% and 0.72 in Heavy, 2% and 0.81 in Light cows for live weight; 6% and 0.18 in Heavy and 9% and -0.47 in Light cows for BCS change. Monthly intake of pasture per ha was validated using another independent set of 12 average monthly values for each of 5 farmlet stocking rates treatments (2.2; 2.7; 3.1; 3.7 and 4.3 cows/ha). RPE and CCC were: 13% and 0.77; 9% and 0.87; 12% and 0.93; 13% and 0.91; 16% and 0.88 respectively. The model was responsive to contrasting cow type and farming management. These results show that the model has acceptable predictive power and can be used to better understand actual farming systems and also to evaluate the expected productive impact of some technical changes introduced at the farm level.
650 $aGANADO DE LECHE
650 $aMATERIA SECA
650 $aPASTURAS
650 $aPRODUCCION DE LECHE
650 $aSISTEMAS DE CULTIVO
700 1 $aLÓPEZ-VILLALOBOS, N.
700 1 $aALLES, G.
700 1 $aLA MANNA, A.
700 1 $aRAVAGNOLO, O.
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