Relationships between residual feed intake and feedlot performance, profitability, and carcass traits in Brahman cattle.

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dc.contributorRICARDO FAVERLO, Universidade Estadual de Londrina - UEL; IVONE YURIKA MIZUBUTI, Universidade Estadual de Londrina - UEL; RODRIGO DA COSTA GOMES, CNPGC; EDSON LUIZ AZAMBUJA RIBEIRO, Universidade Estadual de Londrina - UEL; ELSANIA SALES PEREIRA, Universidade Federal do Ceará - UFC; ODIMARI P. P. PRADO-CALIXTO, Universidade Estadual de Londrina - UEL; Fernando L. Massaro Júnior, Universidade Estadual de Londrina - UEL; Universidade Federal de Uberlândia - UFU.
dc.creatorFAVERO, R.
dc.creatorMIZUBUTI, I. Y.
dc.creatorGOMES, R. da C.
dc.creatorRIBEIRO, E. L. A.
dc.creatorPEREIRA, E. S.
dc.creatorPRADO-CALIXTO, O. P. P.
dc.creatorMASSARO JÚNIOR, F. L.
dc.creatorSANTOS, A. P. S.
dc.date2019-02-19T00:39:04Z
dc.date2019-02-19T00:39:04Z
dc.date2019-02-18
dc.date2018
dc.date2019-02-19T00:39:04Z
dc.date.accessioned2026-07-07T03:40:58Z
dc.descriptionThe present study aimed to evaluate the feedlot performance, profitability and carcass traits of Brahman bulls classified according to the residual feed intake (RFI). Twenty-four bulls (19-month old, 370±34kg live weight) were housed in individual pens for 54 days and had the daily feed intake (observed dry matter intake, DMIobs; DMI % live weight, LW) and average daily gain (ADG) measured. Ultrasound carcass evaluations were performed at the initial and final weighings, when measurements were taken of Longissimus dorsi area, ratio, Longissimus and Biceps femoris fat thickness. The animals were ranked and divided into high (>+0.5 standard deviation; SD), medium (between ±0.5 SD from the mean), and low (<-0.5 SD) RFI groups. Low-RFI animals had lower DMIobs (P<0.10) and DMI % LW (P<0.05). No significant differences in initial and final weight or ADG were noticed (P>0.05). Low-RFI animals showed lower weight gain cost and higher daily profit (P<0.05). Carcass traits were similar between groups, regardless of evaluation date (P>0.05). Selection for RFI lead to animals with lower feed intake without affecting weight gain or carcass traits, thereby providing increased profitability for beef cattle farming.
dc.identifierArquivo Brasileiro Medicina Veterinária Zootecnia, v. 70, n. 2, p .525-534, 2018
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1106174
dc.identifier.urihttp://hdl.handle.net/123456789/440776
dc.languageeng
dc.rightsopenAccess
dc.subjectFeed conversion ratio
dc.subjectMusculature
dc.subjectPhenotype
dc.subjectZebu
dc.titleRelationships between residual feed intake and feedlot performance, profitability, and carcass traits in Brahman cattle.
dc.typeArtigo de periódico

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