Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1121629
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dc.contributor.authorMACIEL, I. C. F.eng
dc.contributor.authorBARBOSA, F. A.eng
dc.contributor.authorTOMICH, T. R.eng
dc.contributor.authorALVARENGA, R. C.eng
dc.contributor.authorFERREIRA, L. R.eng
dc.contributor.authorROWNTREE, J.eng
dc.contributor.authorTHOMPSON, L. R.eng
dc.contributor.authorLANA, A. M. Q.eng
dc.date.accessioned2020-04-15T01:00:51Z-
dc.date.available2020-04-15T01:00:51Z-
dc.date.created2020-04-14
dc.date.issued2019
dc.identifier.citationIn: ANNUAL MEETING AND TRADE SHOW, 2019, Worcester. Abstracts... Worcester: [s.n.], 2019.eng
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1121629-
dc.descriptionCrossbreeding has been used to improve performance in beef cattle; however, the effects of breed composition on methane production, yield and intensity from cattle in a tropical intensive system remain unknown. To assess the impact of breed composition on enteric methane emissions, Nellore (NE; yr 1: BW = 171.5 ± 19.4 kg; n = 10; yr 2: BW = 215.8 ± 32.3 kg, n = 25) and Angus-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. At trial onset, 10 mo old steers grazed Megathyrsus maximus ?Mombaça? in the grazing period (GP) and then were finished in a feedlot (FL) (35:65% corn silage:concentrate diet). Steers (n = 8) from each breed composition were randomly selected in GP and FL to measure CH4 production using a sulfur hexafluoride technique and DMI using titanium dioxide. The NE produced 19% less CH4 than AN in GP (17.21 vs 21.17 kg, P < 0.01), and no difference was observed in FL (22.34 vs 22.67 kg, P > 0.10). However, in FL, NE had greater CH4 intensity (CH4/ADG) compared to AN (122.76 vs 97.49 g/kg, P < 0.01). Furthermore, CH4/carcass weight was greater for NE than AN (0.079 vs 0.067 g/kg CW, P < 0.01). Breed composition did not influence CH4 yield (CH4/DMI) in either phase. The percentage CH4/GEI (Ym) for GP was higher for AN than NE (4.5 vs 3.8%), but lower than the IPCC recommended Ym of 6.5%. In FL, Ym was similar between breed composition (5.0%) and greater than the IPCC Ym of 3%. In our study the introduction of Angus into Nellore has potential to reduce CH4 intensity in tropical climates, resulting in less methane emission per kg beef produced.eng
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectSistema intensivo de produçãoeng
dc.subjectIntensificação sustentáveleng
dc.titleAssessing enteric methane emissions from Nellore and Angus-Nellore crossbred cattle in a tropical, intensive beef cattle production system.eng
dc.typeResumo em anais e proceedingseng
dc.date.updated2020-04-20T11:11:11Z
dc.subject.thesagroGado de Corteeng
dc.subject.thesagroMetanoeng
dc.subject.thesagroBovinoeng
dc.subject.thesagroEfeito Estufaeng
dc.subject.thesagroRuminanteeng
dc.subject.thesagroGáseng
dc.description.notesPublicado no Journal of Animal Science, v. 97, p. 380-381, 2019. Suppl. 3.eng
riaa.ainfo.id1121629eng
riaa.ainfo.lastupdate2020-10-28 -03:00:00
dc.identifier.doi10.1093/jas/skz258.757eng
dc.contributor.institutionIsabella Cristina F. Maciel, Michigan State University; Fabiano A. Barbosa, De Heus Animal Nutrition B.V; THIERRY RIBEIRO TOMICH, CNPGL; RAMON COSTA ALVARENGA, CNPMS; Ludhiana R. Ferreira, Universidade Federal de Minas Gerais; Jason Rowntree, Michigan State University; Logan R. Thompson, Michigan State University; Ângela Maria Q. Lana, Universidade Federal de Minas Gerais.eng
Aparece nas coleções:Resumo em anais de congresso (CNPMS)

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