Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/508872
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dc.contributor.authorRUEDA, B. L.pt_BR
dc.contributor.authorBLAKE, R. W.pt_BR
dc.contributor.authorNICHOLSON, C. F.pt_BR
dc.contributor.authorFOX, D. G.pt_BR
dc.contributor.authorTEDESCHI, L. O.pt_BR
dc.contributor.authorPELL, A. N.pt_BR
dc.contributor.authorFERNANDES, E. C. M.pt_BR
dc.contributor.authorVALENTIM, J. F.pt_BR
dc.contributor.authorCARNEIRO JUNIOR, J. M.pt_BR
dc.date.accessioned2011-04-10T11:11:11Zpt_BR
dc.date.available2011-04-10T11:11:11Zpt_BR
dc.date.created2008-05-05pt_BR
dc.date.issued2003pt_BR
dc.identifier.citationJournal of Animal Science, Champaign, v. 81, n. 12, p. 2923-2937, 2003.pt_BR
dc.identifier.issn0021-8812;(impresso) / 1525-3163 (online)pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/508872pt_BR
dc.descriptionOur 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.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectAmazônia Ocidentalpt_BR
dc.subjectAmazonia occidentalpt_BR
dc.subjectGanado de carnept_BR
dc.subjectPastos forrajerospt_BR
dc.subjectProducción de carnept_BR
dc.subjectRaza de bovinos Nelorept_BR
dc.subjectRendimientospt_BR
dc.subjectLeguminosas forrajeraspt_BR
dc.subjectWestern amazonpt_BR
dc.subjectBrachiaria brizantha cv Marandupt_BR
dc.titleProduction and economic potentials of cattle in pasture-based systems of the Western Amazon region of Brazil.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2019-01-08T11:11:11Zpt_BR
dc.subject.thesagroGado de cortept_BR
dc.subject.thesagroGado Nelorept_BR
dc.subject.thesagroProdução de carnept_BR
dc.subject.thesagroRentabilidadept_BR
dc.subject.thesagroNutrição animalpt_BR
dc.subject.thesagroPastagempt_BR
dc.subject.thesagroGramínea forrageirapt_BR
dc.subject.thesagroBrachiaria decumbenspt_BR
dc.subject.thesagroLeguminosa forrageirapt_BR
dc.subject.thesagroKudzupt_BR
dc.subject.thesagroPueraria phaseoloidespt_BR
dc.subject.nalthesaurusBeef cattlept_BR
dc.subject.nalthesaurusNellorept_BR
dc.subject.nalthesaurusMeat productionpt_BR
dc.subject.nalthesaurusYieldspt_BR
dc.subject.nalthesaurusForage grassespt_BR
dc.subject.nalthesaurusForage legumespt_BR
riaa.ainfo.id508872pt_BR
riaa.ainfo.lastupdate2019-01-08 -02:00:00pt_BR
dc.contributor.institutionInstituto 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.pt_BR
Aparece nas coleções:Artigo em periódico indexado (CPAF-AC)

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