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Registro Completo |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
05/05/2008 |
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Data da última atualização: |
28/07/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RUEDA, B. L.; BLAKE, R. W.; NICHOLSON, C. F.; FOX, D. G.; TEDESCHI, L. O.; PELL, A. N.; FERNANDES, E. C. M.; VALENTIM, J. F.; CARNEIRO JUNIOR, J. M. |
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Afiliação: |
Instituto Nacional de Investigaciones Forestales y Agropecuarias; Cornell University; Cornell University; Cornell University; Cornell University; Cornell University; Cornell University; JUDSON FERREIRA VALENTIM, CPAF-AC; JOSE MARQUES CARNEIRO JUNIOR, CPAF-AC. |
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Título: |
Production and economic potentials of cattle in pasture-based systems of the Western Amazon region of Brazil. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Journal of Animal Science, Champaign, v. 81, n. 12, p. 2923-2937, 2003. |
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ISSN: |
0021-8812;(impresso) / 1525-3163 (online) |
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Idioma: |
Inglês |
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Conteúdo: |
Our objectives were to evaluate strategies to improve productivity and economic returns from beef and dual-purpose cattle systems based on data collected on one dual-purpose (Bos taurus × Bos indicus) and two beef (Nellore) cattle farms in the western Amazon region of Brazil. Forage chemical composition and digestion rates of carbohydrate fractions of grazed Brachiaria decumbens and Brachiaria brizantha cv. Marandu grasses and Pueraria phaseoloides (tropical kudzu) legume were measured monthly during a 9-mo period from the end of one dry season to the end of the subsequent rainy season. Measurements of milk and growth responses to grazing these forages were used to predict animal productivity responses to dietary nutrient availability throughout an annual cycle. The ME available for gain in our simulations was always more limiting than metabolizable protein. The predicted ME available for gain was 0.50 kg/d for steers grazing B. brizantha and 0.40 kg/d for finishing steers grazing B. decumbens. Grasses contained more NDF and neutral detergent insoluble protein and less ME (P < 0.05) in the rainiest months than in the less rainy season, which resulted in 20% less predicted weight gain by growing steers (P < 0.05). Supplementation with sorghum grain was required to increase milk production and growth by 25 or 50% per animal, respectively, but this strategy was less profitable than current forage-only diets. Greater productivity of land and labor from higher stocking indicated greater net margins for beef production, but not for milk. This study suggested that more intensive beef production by judicious fertilization of grass-legume pastures and greater stocking density is the preferable strategy for owners of these cattle systems to improve economic returns under current conditions. It also might help decrease the motivation for additional forest clearing. MenosOur objectives were to evaluate strategies to improve productivity and economic returns from beef and dual-purpose cattle systems based on data collected on one dual-purpose (Bos taurus × Bos indicus) and two beef (Nellore) cattle farms in the western Amazon region of Brazil. Forage chemical composition and digestion rates of carbohydrate fractions of grazed Brachiaria decumbens and Brachiaria brizantha cv. Marandu grasses and Pueraria phaseoloides (tropical kudzu) legume were measured monthly during a 9-mo period from the end of one dry season to the end of the subsequent rainy season. Measurements of milk and growth responses to grazing these forages were used to predict animal productivity responses to dietary nutrient availability throughout an annual cycle. The ME available for gain in our simulations was always more limiting than metabolizable protein. The predicted ME available for gain was 0.50 kg/d for steers grazing B. brizantha and 0.40 kg/d for finishing steers grazing B. decumbens. Grasses contained more NDF and neutral detergent insoluble protein and less ME (P < 0.05) in the rainiest months than in the less rainy season, which resulted in 20% less predicted weight gain by growing steers (P < 0.05). Supplementation with sorghum grain was required to increase milk production and growth by 25 or 50% per animal, respectively, but this strategy was less profitable than current forage-only diets. Greater productivity of land and labor from higher stocking indicated ... Mostrar Tudo |
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Palavras-Chave: |
Amazonia occidental; Amazônia Ocidental; Brachiaria brizantha cv Marandu; Ganado de carne; Leguminosas forrajeras; Pastos forrajeros; Producción de carne; Raza de bovinos Nelore; Rendimientos; Western amazon. |
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Thesagro: |
Brachiaria decumbens; Gado de corte; Gado Nelore; Gramínea forrageira; Kudzu; Leguminosa forrageira; Nutrição animal; Pastagem; Produção de carne; Pueraria phaseoloides; Rentabilidade. |
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Thesaurus Nal: |
Beef cattle; Forage grasses; Forage legumes; Meat production; Nellore; Yields. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/114934/1/17389.pdf
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Marc: |
LEADER 03516naa a2200553 a 4500
001 1508872
005 2021-07-28
008 2003 bl uuuu u00u1 u #d
022 $a0021-8812;(impresso) / 1525-3163 (online)
100 1 $aRUEDA, B. L.
245 $aProduction and economic potentials of cattle in pasture-based systems of the Western Amazon region of Brazil.$h[electronic resource]
260 $c2003
520 $aOur objectives were to evaluate strategies to improve productivity and economic returns from beef and dual-purpose cattle systems based on data collected on one dual-purpose (Bos taurus × Bos indicus) and two beef (Nellore) cattle farms in the western Amazon region of Brazil. Forage chemical composition and digestion rates of carbohydrate fractions of grazed Brachiaria decumbens and Brachiaria brizantha cv. Marandu grasses and Pueraria phaseoloides (tropical kudzu) legume were measured monthly during a 9-mo period from the end of one dry season to the end of the subsequent rainy season. Measurements of milk and growth responses to grazing these forages were used to predict animal productivity responses to dietary nutrient availability throughout an annual cycle. The ME available for gain in our simulations was always more limiting than metabolizable protein. The predicted ME available for gain was 0.50 kg/d for steers grazing B. brizantha and 0.40 kg/d for finishing steers grazing B. decumbens. Grasses contained more NDF and neutral detergent insoluble protein and less ME (P < 0.05) in the rainiest months than in the less rainy season, which resulted in 20% less predicted weight gain by growing steers (P < 0.05). Supplementation with sorghum grain was required to increase milk production and growth by 25 or 50% per animal, respectively, but this strategy was less profitable than current forage-only diets. Greater productivity of land and labor from higher stocking indicated greater net margins for beef production, but not for milk. This study suggested that more intensive beef production by judicious fertilization of grass-legume pastures and greater stocking density is the preferable strategy for owners of these cattle systems to improve economic returns under current conditions. It also might help decrease the motivation for additional forest clearing.
650 $aBeef cattle
650 $aForage grasses
650 $aForage legumes
650 $aMeat production
650 $aNellore
650 $aYields
650 $aBrachiaria decumbens
650 $aGado de corte
650 $aGado Nelore
650 $aGramínea forrageira
650 $aKudzu
650 $aLeguminosa forrageira
650 $aNutrição animal
650 $aPastagem
650 $aProdução de carne
650 $aPueraria phaseoloides
650 $aRentabilidade
653 $aAmazonia occidental
653 $aAmazônia Ocidental
653 $aBrachiaria brizantha cv Marandu
653 $aGanado de carne
653 $aLeguminosas forrajeras
653 $aPastos forrajeros
653 $aProducción de carne
653 $aRaza de bovinos Nelore
653 $aRendimientos
653 $aWestern amazon
700 1 $aBLAKE, R. W.
700 1 $aNICHOLSON, C. F.
700 1 $aFOX, D. G.
700 1 $aTEDESCHI, L. O.
700 1 $aPELL, A. N.
700 1 $aFERNANDES, E. C. M.
700 1 $aVALENTIM, J. F.
700 1 $aCARNEIRO JUNIOR, J. M.
773 $tJournal of Animal Science, Champaign$gv. 81, n. 12, p. 2923-2937, 2003.
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Embrapa Acre (CPAF-AC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Clima Temperado. Para informações adicionais entre em contato com cpact.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
06/01/2009 |
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Data da última atualização: |
06/01/2009 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
OLIVEIRA, M. G.; NEVES, M. B. das; TRECHA, C. de O.; CUNHA, U. S.; GRÜTZMACHER, A. D.; MARTINS, J. F. da S.; PORTO, M. P. |
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Título: |
Efeito de espinosade sob diferentes dosagens e da associação de enxofre com inseticidas no controle da lagarta-do-cartucho em milho de várzea. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: REUNIÃO TÉCNICA ANUAL DE MILHO, 53., REUNIÃO TÉCNICA ANUAL DE SORGO, 36., 2008. Pelotas. Atas e resumos... Pelotas: Embrapa Clima Temperado, 2008. 1 CD-ROM. |
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Idioma: |
Português |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00715naa a2200181 a 4500
001 1746434
005 2009-01-06
008 2008 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, M. G.
245 $aEfeito de espinosade sob diferentes dosagens e da associação de enxofre com inseticidas no controle da lagarta-do-cartucho em milho de várzea.
260 $c2008
700 1 $aNEVES, M. B. das
700 1 $aTRECHA, C. de O.
700 1 $aCUNHA, U. S.
700 1 $aGRÜTZMACHER, A. D.
700 1 $aMARTINS, J. F. da S.
700 1 $aPORTO, M. P.
773 $tIn: REUNIÃO TÉCNICA ANUAL DE MILHO, 53., REUNIÃO TÉCNICA ANUAL DE SORGO, 36., 2008. Pelotas. Atas e resumos... Pelotas: Embrapa Clima Temperado, 2008. 1 CD-ROM.
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