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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agricultura Digital. Para informações adicionais entre em contato com cnptia.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital; Embrapa Amazônia Ocidental; Embrapa Gado de Corte. |
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Data corrente: |
02/04/2012 |
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Data da última atualização: |
22/04/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BARIONI, L. G.; ZANETT ALBERTINI, T.; TONATO, F.; MEDEIROS, S. R. de; SILVA, R. O. |
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Afiliação: |
LUIS GUSTAVO BARIONI, CNPTIA; FELIPE TONATO, CPAA; SERGIO RAPOSO DE MEDEIROS, CNPGC. |
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Título: |
Running head: computer models for beef systems. Using computer models to assist planning beef production: experiences in Brazil. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Revista Argentina de Producción Animal, v. 32, n. 1, p. 77-86, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
Brazil is a major beef producer and exporter with most of its production obtained from tropical grazing systems based on Urochloa (Brachiaria) pastures and Nellore (Bos indicus) animals. Despite of major differences to the production systems of developed countries, adaptation of foreign models has been the most successful strategy to develop our own decision support systems (DSSs). In Brazil, DSSs have been more straightforwardly developed and adopted in feedlot operations, probably due to the easier tuning of the available models and the better information and control related to feedlots. An example of successful Brazilian computer model for feedlots is RLM, which includes a model of animal growth based on NRC adjusted for Nellore and crossbred animals. Further, RLM includes a modified feed intake equations, a Brazilian feed library and diet optimization methods for least cost of dry matter or minimum production cost. The development of computer models for our grazing conditions has been comparatively slower. Greater changes in model structure and parameter values were required as most process-based grazing system models have been developed based on temperate or rangelands pasture species. Brazilian research on pasture production, feed intake and diet selection seems more distant to modeling, possibly due to the absence of a reference model to help driving the experimental procedures. From the manager perspective, planning occurs on a longer time horizon in grazing systems and much more risk is associated to the effects of variable climate conditions on the dynamics of pasture production and quality. Besides, higher costs and lower accuracy in monitoring the pasture may also discourage adoption. However, great interest by the Brazilian extensionists and farmers has been perceived for Invernada, a dynamic DSS model recently released Brazilian for grazing systems. Experiences with Invernada training courses indicated that adoption may be slowed down due to the higher complexity of this tool compared with feedlot DSSs and due to the lack of acquaintance of the users with other similar tools. Drivers and future options for the development of DSSs for beef production are discussed. MenosBrazil is a major beef producer and exporter with most of its production obtained from tropical grazing systems based on Urochloa (Brachiaria) pastures and Nellore (Bos indicus) animals. Despite of major differences to the production systems of developed countries, adaptation of foreign models has been the most successful strategy to develop our own decision support systems (DSSs). In Brazil, DSSs have been more straightforwardly developed and adopted in feedlot operations, probably due to the easier tuning of the available models and the better information and control related to feedlots. An example of successful Brazilian computer model for feedlots is RLM, which includes a model of animal growth based on NRC adjusted for Nellore and crossbred animals. Further, RLM includes a modified feed intake equations, a Brazilian feed library and diet optimization methods for least cost of dry matter or minimum production cost. The development of computer models for our grazing conditions has been comparatively slower. Greater changes in model structure and parameter values were required as most process-based grazing system models have been developed based on temperate or rangelands pasture species. Brazilian research on pasture production, feed intake and diet selection seems more distant to modeling, possibly due to the absence of a reference model to help driving the experimental procedures. From the manager perspective, planning occurs on a longer time horizon in grazing systems ... Mostrar Tudo |
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Palavras-Chave: |
Beef production; Computer models; Feedlot; Grazing systems; Livestock planning; Modelo computacional; Planejamento pecuário; Produção de carne bovina. |
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Thesagro: |
Produção Animal; Produção de Carne; Programa de Computador; Sistema de Produção. |
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Thesaurus Nal: |
Feedlots. |
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Categoria do assunto: |
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X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 03235naa a2200325 a 4500
001 2175001
005 2025-04-22
008 2012 bl uuuu u00u1 u #d
100 1 $aBARIONI, L. G.
245 $aRunning head$bcomputer models for beef systems. Using computer models to assist planning beef production: experiences in Brazil.$h[electronic resource]
260 $c2012
520 $aBrazil is a major beef producer and exporter with most of its production obtained from tropical grazing systems based on Urochloa (Brachiaria) pastures and Nellore (Bos indicus) animals. Despite of major differences to the production systems of developed countries, adaptation of foreign models has been the most successful strategy to develop our own decision support systems (DSSs). In Brazil, DSSs have been more straightforwardly developed and adopted in feedlot operations, probably due to the easier tuning of the available models and the better information and control related to feedlots. An example of successful Brazilian computer model for feedlots is RLM, which includes a model of animal growth based on NRC adjusted for Nellore and crossbred animals. Further, RLM includes a modified feed intake equations, a Brazilian feed library and diet optimization methods for least cost of dry matter or minimum production cost. The development of computer models for our grazing conditions has been comparatively slower. Greater changes in model structure and parameter values were required as most process-based grazing system models have been developed based on temperate or rangelands pasture species. Brazilian research on pasture production, feed intake and diet selection seems more distant to modeling, possibly due to the absence of a reference model to help driving the experimental procedures. From the manager perspective, planning occurs on a longer time horizon in grazing systems and much more risk is associated to the effects of variable climate conditions on the dynamics of pasture production and quality. Besides, higher costs and lower accuracy in monitoring the pasture may also discourage adoption. However, great interest by the Brazilian extensionists and farmers has been perceived for Invernada, a dynamic DSS model recently released Brazilian for grazing systems. Experiences with Invernada training courses indicated that adoption may be slowed down due to the higher complexity of this tool compared with feedlot DSSs and due to the lack of acquaintance of the users with other similar tools. Drivers and future options for the development of DSSs for beef production are discussed.
650 $aFeedlots
650 $aProdução Animal
650 $aProdução de Carne
650 $aPrograma de Computador
650 $aSistema de Produção
653 $aBeef production
653 $aComputer models
653 $aFeedlot
653 $aGrazing systems
653 $aLivestock planning
653 $aModelo computacional
653 $aPlanejamento pecuário
653 $aProdução de carne bovina
700 1 $aZANETT ALBERTINI, T.
700 1 $aTONATO, F.
700 1 $aMEDEIROS, S. R. de
700 1 $aSILVA, R. O.
773 $tRevista Argentina de Producción Animal$gv. 32, n. 1, p. 77-86, 2012.
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Embrapa Agricultura Digital (CNPTIA) |
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| Registros recuperados : 5 | |
| 2. |  | MACEDO, J. R. de; SILVA, E. F. da; CAPECHE, C. L.; MELO, A. da S.; LEITÃO, K.; LEAL, I. F. Caracterização e classificação dos solos dos assentamentos agrícolas Sebastião Lan I e II no município de Casimiro de Abreu/RJ. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 32., 2009, Fortaleza. O solo e a produção de bioenergia: perspectivas e desafios. [Viçosa, MG]: SBCS; Fortaleza: UFC, 2009. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Solos. |
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| 3. | | SILVA, E. F. da; MACEDO, J. R. de; CAPECHE, C. L.; MELO, A. da S.; DART, R. de O.; LEAL, I. F.; LEITÃO, K.; OLIVEIRA, C. C. Aptidão Agrícola e adequação de uso das terras do assentamento-acampamento Sebastião Lan I e II. Rio de Janeiro: Embrapa Solos, 2010. 34 p. (Embrapa Solos. Boletim de pesquisa e desenvolvimento, 207).| Tipo: Boletim de Pesquisa e Desenvolvimento |
| Biblioteca(s): Embrapa Solos. |
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| 4. | | MACEDO, J. R. de; SILVA, E. F. da; CAPECHE, C. L.; MELO, A. da S.; OLIVEIRA, C. C. de; LEAL, I. F. Comportamento do lençol freático e determinação das propriedades químicas em solos sulfatos ácidos no município de Casimiro de Abreu/RJ. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 32., 2009, Fortaleza. O solo e a produção de bioenergia: perspectivas e desafios. [Viçosa, MG]: SBCS; Fortaleza: UFC, 2009. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Solos. |
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| 5. | | FAVARO, S. P.; MIRANDA, C. H. B.; LIMA, K. Q.; SHINZATO, N. S. U.; LEAL, I. F. C. dos s.; GAMBETTA, R.; RODRIGUES, D. de S. Princípios da extração sem solvente e tecnologias potenciais para obtenção de óleos vegetais. Brasília, DF: Embrapa Agroenergia, 2022. (Embrapa Agroenergia. Documentos, 43)| Biblioteca(s): Embrapa Agroenergia. |
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| Registros recuperados : 5 | |
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