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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Corte. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
20/02/2018 |
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Data da última atualização: |
27/02/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
EUCLIDES, V. P. B.; EUCLIDES FILHO, K.; MONTAGNER, D. B.; FIGUEIREDO, G. R.; LOPES, F. da C. |
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Afiliação: |
VALERIA PACHECO BATISTA EUCLIDES, CNPGC; KEPLER EUCLIDES FILHO, CNPGC; DENISE BAPTAGLIN MONTAGNER, CNPGC; GERALDO R. FIGUEIREDO; FLÁVIA DA C. LOPES, Universidade Federal de Mato Grosso do Sul - UFMS. |
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Título: |
Alternatives for intensification of beef production under grazing. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Tropical Grasslands - Forrajes Tropicales, v. 2, p. 48-50, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
Sustainable technological alternatives, which will maintain a constant uniform beef supply year round, are needed, if Brazil is to maintain its position, as one of the most im-portant players in the world beef market. One approach is to more intensively use the alternatives available for pas-ture management and feed supplementation. However, the responses obtained could be enhanced by using animals with superior genetic makeup, to make better use of the resources provided. Thus, a grazing experiment was de-signed to evaluate combinations of pasture grasses (Brachiaria and Panicum), pasture management (feed supplementation and rotational grazing) and animal genetic groups. |
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Palavras-Chave: |
Feed supplementation; Genetic group. |
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Thesagro: |
Brachiaria. |
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Thesaurus Nal: |
Cattle breeds; Panicum; Savannas. |
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Categoria do assunto: |
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Marc: |
LEADER 01369naa a2200241 a 4500
001 2087939
005 2018-02-27
008 2014 bl uuuu u00u1 u #d
100 1 $aEUCLIDES, V. P. B.
245 $aAlternatives for intensification of beef production under grazing.$h[electronic resource]
260 $c2014
520 $aSustainable technological alternatives, which will maintain a constant uniform beef supply year round, are needed, if Brazil is to maintain its position, as one of the most im-portant players in the world beef market. One approach is to more intensively use the alternatives available for pas-ture management and feed supplementation. However, the responses obtained could be enhanced by using animals with superior genetic makeup, to make better use of the resources provided. Thus, a grazing experiment was de-signed to evaluate combinations of pasture grasses (Brachiaria and Panicum), pasture management (feed supplementation and rotational grazing) and animal genetic groups.
650 $aCattle breeds
650 $aPanicum
650 $aSavannas
650 $aBrachiaria
653 $aFeed supplementation
653 $aGenetic group
700 1 $aEUCLIDES FILHO, K.
700 1 $aMONTAGNER, D. B.
700 1 $aFIGUEIREDO, G. R.
700 1 $aLOPES, F. da C.
773 $tTropical Grasslands - Forrajes Tropicales$gv. 2, p. 48-50, 2014.
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Embrapa Gado de Corte (CNPGC) |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
24/01/1997 |
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Data da última atualização: |
30/06/2014 |
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Autoria: |
GUTIERREZ-ALEMAN, N.; BOER, A. J. D.; KEHRBERG, E. W. |
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Afiliação: |
Nestor Gutierrez-Aleman, Winrock International / Consultor Embrapa Caprinos (CNPC) - Sobral, Ceara, Brazil; Winrock International, Morrilton, Arkansas, USA; Winrock International, Morrilton, Arkansas, USA. |
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Título: |
A bio-economic model of small-ruminant production in the semi-arid tropics of the northeast region of Brazil. Part 2. Linear programming applications and results. |
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Ano de publicação: |
1986 |
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Fonte/Imprenta: |
Agricultural Systems, v. 19, n. 3, p. 159-187, 1986. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Survey data covering production systems for mixed farms in the Northeast region of Brazil has been synthesized within a linear programming (LP) framework. The resulting model contains activities covering the production of cattle, sheep and goats, and a vector of alternative cropping activities. Farm resources include Iwo categories of grazing land, planted forages, family labour, two categories of hired labour, and working capital. The major livestock activities represented in the region were included as production options. Initial results did not discriminate between categories of available grazing resources. Therefore, cattle, by virtue of their higher dressing percentages and higher price per kilogram, were the optimal livestock species. A series of adjustments was then carried out to refiect types of feed resources and patterns of animal species selectivity. Optimal farm solutions for a representative traditional-production unit found objective function levels close to those found by farm surveys, but discrepancies between mod~l results and the actual farm situations for sheep and goal activities. Model results excluded small-ruminant breeding activities because of the low net offtake at weaning levels assumed in the model. Data that became available alter these initial model runs showed a higher net offtake level, and these revised coefficients resulted in optimal LP results very close to those actually found on farms. The model was then used to simulate the response of activities andfarm economic performance to 'good' and 'bad' years defined by +- half standard deviation from mean annual levels of precipitation. Model results indicated much higher variability of farm income in. response to weather than that found with changes in levels of technical efficiency of sheep and goat production. MenosAbstract: Survey data covering production systems for mixed farms in the Northeast region of Brazil has been synthesized within a linear programming (LP) framework. The resulting model contains activities covering the production of cattle, sheep and goats, and a vector of alternative cropping activities. Farm resources include Iwo categories of grazing land, planted forages, family labour, two categories of hired labour, and working capital. The major livestock activities represented in the region were included as production options. Initial results did not discriminate between categories of available grazing resources. Therefore, cattle, by virtue of their higher dressing percentages and higher price per kilogram, were the optimal livestock species. A series of adjustments was then carried out to refiect types of feed resources and patterns of animal species selectivity. Optimal farm solutions for a representative traditional-production unit found objective function levels close to those found by farm surveys, but discrepancies between mod~l results and the actual farm situations for sheep and goal activities. Model results excluded small-ruminant breeding activities because of the low net offtake at weaning levels assumed in the model. Data that became available alter these initial model runs showed a higher net offtake level, and these revised coefficients resulted in optimal LP results very close to those actually found on farms. The model was then used to simulate the r... Mostrar Tudo |
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Palavras-Chave: |
Aspecto sócio econômico; Brasil; Modelo animal; Nordeste; Northeast; Production system; Semiarid climate. |
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Thesagro: |
Caprino; Modelo de simulação; Ovino; Sistema de produção. |
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Thesaurus NAL: |
Brazil; Goats; Sheep; Simulation models; Small ruminants. |
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Categoria do assunto: |
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URL: |
https://www.sciencedirect.com/science/article/pii/0308521X8690051X/pdf?md5=f79f317e2be6789ea1f96ab7fd37d992&pid=1-s2.0-0308521X8690051X-main.pdf
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Marc: |
LEADER 02834naa a2200337 a 4500
001 1514143
005 2014-06-30
008 1986 bl uuuu u00u1 u #d
100 1 $aGUTIERREZ-ALEMAN, N.
245 $aA bio-economic model of small-ruminant production in the semi-arid tropics of the northeast region of Brazil. Part 2. Linear programming applications and results.$h[electronic resource]
260 $c1986
520 $aAbstract: Survey data covering production systems for mixed farms in the Northeast region of Brazil has been synthesized within a linear programming (LP) framework. The resulting model contains activities covering the production of cattle, sheep and goats, and a vector of alternative cropping activities. Farm resources include Iwo categories of grazing land, planted forages, family labour, two categories of hired labour, and working capital. The major livestock activities represented in the region were included as production options. Initial results did not discriminate between categories of available grazing resources. Therefore, cattle, by virtue of their higher dressing percentages and higher price per kilogram, were the optimal livestock species. A series of adjustments was then carried out to refiect types of feed resources and patterns of animal species selectivity. Optimal farm solutions for a representative traditional-production unit found objective function levels close to those found by farm surveys, but discrepancies between mod~l results and the actual farm situations for sheep and goal activities. Model results excluded small-ruminant breeding activities because of the low net offtake at weaning levels assumed in the model. Data that became available alter these initial model runs showed a higher net offtake level, and these revised coefficients resulted in optimal LP results very close to those actually found on farms. The model was then used to simulate the response of activities andfarm economic performance to 'good' and 'bad' years defined by +- half standard deviation from mean annual levels of precipitation. Model results indicated much higher variability of farm income in. response to weather than that found with changes in levels of technical efficiency of sheep and goat production.
650 $aBrazil
650 $aGoats
650 $aSheep
650 $aSimulation models
650 $aSmall ruminants
650 $aCaprino
650 $aModelo de simulação
650 $aOvino
650 $aSistema de produção
653 $aAspecto sócio econômico
653 $aBrasil
653 $aModelo animal
653 $aNordeste
653 $aNortheast
653 $aProduction system
653 $aSemiarid climate
700 1 $aBOER, A. J. D.
700 1 $aKEHRBERG, E. W.
773 $tAgricultural Systems$gv. 19, n. 3, p. 159-187, 1986.
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Embrapa Caprinos e Ovinos (CNPC) |
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