Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1054343
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dc.contributor.authorDEMARCHI, J. J. A. de A.pt_BR
dc.contributor.authorMANELLA, M. Q.pt_BR
dc.contributor.authorPRIMAVESI, O. M. A. S. P. R.pt_BR
dc.contributor.authorFRIGHETTO, R. T. S.pt_BR
dc.contributor.authorROMERO, L. A.pt_BR
dc.contributor.authorBERNDT, A.pt_BR
dc.contributor.authorLIMA, M. A. dept_BR
dc.date.accessioned2016-10-10T11:11:11Zpt_BR
dc.date.available2016-10-10T11:11:11Zpt_BR
dc.date.created2016-10-10pt_BR
dc.date.issued2016pt_BR
dc.identifier.citationJournal of Agricultural Science, Toronto, v. 8, n. 4, p. 106-115, 2016.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1054343pt_BR
dc.descriptionAbstract: The objective of this study was to evaluate the effect of seasons under a tropical climate on forage quality, aswell the effect of an Urochloa brizantha cv. Marandu grazing system on enteric methane (CH4) emissions fromNellore cattle in the Southeast region of Brazil. Sixteen Nellore steers (18 months old and initial weight 318.0 ± 116.59 kg of LW; final weight 469 ± 98.50 kg of LW) were used for a trial period of 10 months, with four collection periods in winter (August), spring (December), summer (February) and autumn (May). Each collection period consisted of 28 days, corresponding to the representative month of each season where the last six days were designed for methane data collection. Animals were randomly distributed within 16 experimental plots, distributed in four random blocks over four trial periods. CH4 emissions were determined using the sulphur hexafluoride (SF6) tracer gas technique measured by gas chromatography and fluxes of CH4 calculated. The forage quality was characterized by higher CP and IVDMD and lower lignin contents in spring, differing specially from winter forage. Average CH4 emissions were between 102.49 and 220.91 g d-1 (37.4 to 80.6 kg ani-1 yr-1); 16.89 and 30.20 g kg-1 DMI; 1.35 and 2.90 Mcal ani-1 d-1; 0.18 and 0.57 g kg-1 ADG-1 and 5.05 and 8.76% of GE. Emissions in terms of CO2 equivalents were between 4.68 and 14.22 g CO2-eq-1 g-1 ADG. Variations in CH4 emissions were related to seasonal effect on the forage quality and variations in dry matter intake.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectCO2-eqpt_BR
dc.subjectEnteric methanept_BR
dc.subjectNelorept_BR
dc.titleEffect of seasons on enteric methane emissions from cattle grazing Urochloa brizantha.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2017-03-03T11:11:11Zpt_BR
dc.subject.thesagroFermentaçãopt_BR
dc.subject.thesagroGado de cortept_BR
dc.subject.thesagroMetanopt_BR
dc.subject.thesagroNutrição animalpt_BR
dc.subject.thesagroRuminaçãopt_BR
dc.subject.thesagroGramínea forrageirapt_BR
dc.subject.nalthesaurusUrochloa brizanthapt_BR
dc.subject.nalthesaurusMethanept_BR
dc.subject.nalthesaurusNellorept_BR
dc.subject.nalthesaurusBeef cattlept_BR
dc.subject.nalthesaurusGas emissionspt_BR
dc.subject.nalthesaurusSulfur hexafluoridept_BR
riaa.ainfo.id1054343pt_BR
riaa.ainfo.lastupdate2017-03-03pt_BR
dc.contributor.institutionJOÃO JOSÉ ASSUMPÇÃO DE ABREU DEMARCHI, IZ - Nova Odessa; MARCELO DE QUEIROZ MANELLA, Phibro Animal Health; ODO M A S P R PRIMAVESI; ROSA TOYOKO SHIRAISHI FRIGHETTO, CNPMA; LAURA ALEXANDRA ROMERO, FMVZ-USP; ALEXANDRE BERNDT, CPPSE; MAGDA APARECIDA DE LIMA, CNPMA.pt_BR
Aparece nas coleções:Artigo em periódico indexado (CNPMA)

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