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dc.contributor.authorRIBEIRO, J. do S.pt_BR
dc.contributor.authorGONÇALVES, T. de M.pt_BR
dc.contributor.authorLADEIRA, M. M.pt_BR
dc.contributor.authorCAMPOS, F. R.pt_BR
dc.contributor.authorTULLIO, R. R.pt_BR
dc.contributor.authorMACHADO NETO, O. R.pt_BR
dc.contributor.authorOLIVEIRA, D. M. dept_BR
dc.contributor.authorBASSI, M. S.pt_BR
dc.date.accessioned2013-01-22T11:11:11Zpt_BR
dc.date.available2013-01-22T11:11:11Zpt_BR
dc.date.created2013-01-22pt_BR
dc.date.issued2012pt_BR
dc.identifier.citationRevista Brasileira de Zootecnia, v. 41, n. 6, p. 1509-1515, 2012.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/945921pt_BR
dc.descriptionThe objective of this study was to evaluate the residual feed intake (RFI) and its relation with performance, carcass and meat characteristics of Zebu animals. A total of 40 Zebu steers with initial age of 18 months and initial live weight of 350 kg were confined in feedlot for 112 days. The average daily gain (ADG) and dry matter intake (DMI) were obtained every 14 days. Residual feed intake was determined by the difference between observed and predicted DMI, based on the metabolic weight and the ADG. Animals were classified into the RFI groups: high (>0.5 standard deviation of the mean - least efficient), medium (±0.5 standard deviation of the mean) and low (<0.5 standard deviation of the mean - most efficient). Daily cost with feeding and per kilogram of weight gain was determined. Characteristics of carcass (weight, yield, subcutaneous fat) meat (pH, shear force and color) were assessed. Animals with low RFI presented lower DMI. The variation in DMI between the low and the high RFI groups promoted difference in the daily cost with feeding and per kilogram of weight gain, with animals of low RFI presenting costs 5 and 9% lower, respectively. Carcass and meat characteristics differed over the RFI groups. The knowledge of the RFI of the animals enables a more efficient system, with reduction in the costs with feeding, without promoting alterations on the performance and carcass characteristics of the meat from Zebu animals.pt_BR
dc.language.isoengpt_BR
dc.rightsopenAccesspt_BR
dc.subjectFeed efficiencypt_BR
dc.titleResidual feed intake and its effect on carcass and meat characteristics of feedlot Zebu cattle.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2016-03-03T11:11:11Zpt_BR
dc.subject.thesagroPerformancept_BR
dc.subject.nalthesaurusmeat qualitypt_BR
riaa.ainfo.id945921pt_BR
riaa.ainfo.lastupdate2016-03-03pt_BR
dc.contributor.institutionJULIMAR DO SACRAMENTO RIBEIRO, Universidade Federal de Lavraspt_BR
dc.contributor.institutionTARCISIO DE MORAES GONÇALVES, Universidade Federal de Lavraseng
dc.contributor.institutionMÁRCIO MACHADO LADEIRA, Universidade Federal de Lavraseng
dc.contributor.institutionFABRÍCIO RODRIGUES CAMPOS, Universidade Federal de Lavraseng
dc.contributor.institutionRYMER RAMIZ TULLIO, CPPSEeng
dc.contributor.institutionOTÁVIO RODRIGUES MACHADO NETO, Universidade Federal de Lavraseng
dc.contributor.institutionDALTON MENDES DE OLIVEIRA, Universidade Federal de Lavraseng
dc.contributor.institutionMARCELO SILVA BASSI, Universidade Federal de Lavras.eng
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