Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113537
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dc.contributor.authorMACIEL, I. C. de F.eng
dc.contributor.authorBARBOSA, F. A.eng
dc.contributor.authorTOMICH, T. R.eng
dc.contributor.authorPEREIRA, L. G. R.eng
dc.contributor.authorALVARENGA, R. C.eng
dc.contributor.authorLOPES, L. S.eng
dc.contributor.authorMALACCO, V. M. R.eng
dc.contributor.authorROWNTREE, J. E.eng
dc.contributor.authorTHOMPSON, L. R.eng
dc.contributor.authorLANA, A. M. Q.eng
dc.date.accessioned2019-10-28T18:06:11Z-
dc.date.available2019-10-28T18:06:11Z-
dc.date.created2019-10-28
dc.date.issued2019
dc.identifier.citationPlosONE, v. 14, n. 7, e0220247, July 2019.eng
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1113537-
dc.descriptionCrossbreeding has been used to improve performance in beef cattle, however the effects of breed composition on methane (CH4) production, yield and intensity from cattle raised in tropical intensive and integrated systems remain unknown. To assess the impact of breed composition on performance and methane emissions, Nellore (NEL; yr 1: BW = 171.5± 19.4 kg; n = 10; yr 2: BW = 215.8±32.3 kg, n = 25) and Angus x Nellore crossbred (AN; yr 1: BW = 214.2±26.4 kg, n = 10; yr 2: BW = 242.5±32.2 kg, n = 25) were compared. The animals grazed on integrated crop-livestock system in the growing phase (stocking rate 2452 kg BW/ha, herbage mass 4,884 kg dry matter (DM)/ha, forage allowance 5.9 kg DM/100kg BW) and then were finished in a feedlot. Steers (n = 8) from each breed composition were randomly selected in each phase to measure CH4 production using a sulfur hexafluoride (SF6) tracer technique and DM intake (DMI) using titanium dioxide. Compared with NEL, AN had both superior total gain and average daily gain (ADG) in the grazing period. The AN presented greater ADG in the feedlot with a shorter finishing period and resulted in greater carcass yield and carcass ADG. Methane production (kg/period) was lower in NEL (19% less) than AN in grazing (P<0.01), and no difference was observed in feedlot. The NEL had less CH4 intensity (CH4/BW) in grazing but greater CH4 per unit of ADG in the feedlot compared to AN. Breed composition did not influence the CH4 yield (CH4/DMI) in either phase, despite the difference in feedlot DMI (kg/day). In conclusion, crossbreeding may be an option to improve performance and reduce the CH4 per ADG in tropical climate conditions, resulting in lower methane emission per kg of meat produced.eng
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectSistema integradoeng
dc.subjectIntegração lavoura-pecuáriaeng
dc.titleCould the breed composition improve performance and change the enteric methane emissions from beef cattle in a tropical intensive production system?eng
dc.typeArtigo de periódicoeng
dc.date.updated2019-10-28T18:06:11Z
dc.subject.thesagroGado de Corteeng
dc.subject.thesagroRaçaeng
dc.subject.thesagroCruzamento Animaleng
dc.subject.thesagroGáseng
dc.subject.thesagroMetanoeng
dc.subject.thesagroSistema de Cultivoeng
dc.subject.thesagroClima Tropicaleng
riaa.ainfo.id1113537eng
riaa.ainfo.lastupdate2019-10-28
dc.identifier.doihttps://doi.org/10.1371/journal.pone.0220247eng
dc.contributor.institutionIsabella Cristina de Faria Maciel, Universidade Federal de Minas Gerais; Fabiano Alvim Barbosa, De Heus Animal Nutrition B. V.; THIERRY RIBEIRO TOMICH, CNPGL; LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL; RAMON COSTA ALVARENGA, CNPMS; Leandro Sâmia Lopes, Universidade Federal de Minas Gerais; Victor Marco Rocha Malacco, Universidade Federal de Minas Gerais; Jason E. Rowntree, Michigan State University; Logan R. Thompson, Michigan State University; Ângela Maria Quintão Lana, Universidade Federal de Minas Gerais.eng
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