Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/927192
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dc.contributor.authorPORTO, M. O.pt_BR
dc.contributor.authorPAULINO, M. F.pt_BR
dc.contributor.authorVALADARES FILHO, S. de C.pt_BR
dc.contributor.authorDETMANN, E.pt_BR
dc.contributor.authorCAVALI, J.pt_BR
dc.contributor.authorSALES, M. F. L.pt_BR
dc.contributor.authorVALENTE, E. E. L.pt_BR
dc.contributor.authorCOUTO, V. R. M.pt_BR
dc.date.accessioned2012-06-26T11:11:11Zpt_BR
dc.date.available2012-06-26T11:11:11Zpt_BR
dc.date.created2012-06-26pt_BR
dc.date.issued2012pt_BR
dc.identifier.citationRevista Brasileira de Zootecnia, Viçosa, v. 41, n. 3, p. 734-745, 2012.pt_BR
dc.identifier.issn1806-9290pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/927192pt_BR
dc.descriptionThe objective of this study was to estimate requirements of energy, protein and macrominerals of young Nellore/Holstein crossbreds bulls supplemented on pastures of Brachiaria decumbens Stapf. Thirty-five young bulls, at 8.53±0.18 months of age and with initial body weight of 230.6±6.1 kg were used. Ten animals were slaughtered as reference, in different weight range, and the other animals were slaughtered at the end of the experimental period. For estimate of net energy requirements for weight, a regression equation between log of retained energy (RE) and log of empty body weight gain (EBWG) was constructed. Net requirements of Ca, P, Mg, Na and K were determined by the equation Y' = a.b.Xb-1, in which a and b represent the intercept and the coefficient of equation of prediction of macrominerals in body content, respectively. Requirements of metabolizable energy for maintenance (MEm) were obtained from retained energy in function of metabolizable energy intake (MEI). The requirements of MEm of Nellore/Holstein crossbreds young bulls on pasture was 125 kcal/EBW0.75/day. The efficiency of ME utilization for maintenance (km) of grazing Nellore/Holstein crossbred young bulls was 0.58 and 0.24 for gain. The total metabolizable protein requirements for an animal with 400 kg and with average daily gain of 1.0 kg, were 638.36 g/day. The dietetic requirements of Ca and P for an animal with 400 kg BW were 0.49 and 0.21% of DM, respectively. Daily metabolizable energy requirement for maintenance of grazing Nellore/Holstein crossbred young bulls was 11.6% greater than the values found for cattle in feedlot in Brazil (112 kcal/kg EBW0.75).pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectNelore x Holsteinpt_BR
dc.subjectTorospt_BR
dc.subjectAnimales jóvenespt_BR
dc.subjectAumento de pesopt_BR
dc.subjectFuentes energéticas dietéticaspt_BR
dc.subjectGanado de carnept_BR
dc.subjectNutrición animalpt_BR
dc.subjectPastizalespt_BR
dc.subjectPastos forrajerospt_BR
dc.subjectProductos del cruzamientopt_BR
dc.subjectProteína dietéticapt_BR
dc.subjectRaza de bovinos Nelorept_BR
dc.subjectRaza de ganado Holsteinpt_BR
dc.subjectSuplementos dietéticos mineralespt_BR
dc.titleNutritional requirements of energy, protein and macrominerals for maintenance and weight gain of young crossbred Nellore × Holstein bulls on pasture.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2017-06-29T11:11:11Zpt_BR
dc.subject.thesagroGado de cortept_BR
dc.subject.thesagroNutrição animalpt_BR
dc.subject.thesagroPastagempt_BR
dc.subject.thesagroGramínea forrageirapt_BR
dc.subject.thesagroCapim Brachiariapt_BR
dc.subject.thesagroBrachiaria decumbenspt_BR
dc.subject.thesagroSuplemento mineralpt_BR
dc.subject.thesagroNutriente mineralpt_BR
dc.subject.thesagroProteínapt_BR
dc.subject.thesagroEnergiapt_BR
dc.subject.thesagroGanho de pesopt_BR
dc.subject.thesagroTouropt_BR
dc.subject.thesagroBezerro mestiçopt_BR
dc.subject.thesagroGado Nelorept_BR
dc.subject.thesagroGado Holandêspt_BR
dc.subject.nalthesaurusBeef cattlept_BR
dc.subject.nalthesaurusAnimal nutritionpt_BR
dc.subject.nalthesaurusPasturespt_BR
dc.subject.nalthesaurusForage grassespt_BR
dc.subject.nalthesaurusDietary mineral supplementspt_BR
dc.subject.nalthesaurusDietary energy sourcespt_BR
dc.subject.nalthesaurusDietary proteinpt_BR
dc.subject.nalthesaurusWeight gainpt_BR
dc.subject.nalthesaurusYoung animalspt_BR
dc.subject.nalthesaurusCrossbredspt_BR
dc.subject.nalthesaurusBullspt_BR
dc.subject.nalthesaurusNellorept_BR
dc.subject.nalthesaurusHolsteinpt_BR
riaa.ainfo.id927192pt_BR
riaa.ainfo.lastupdate2017-06-29pt_BR
dc.contributor.institutionMARLOS OLIVEIRA PORTO, UNIVERSIDADE FEDERAL DE RONDÔNIA; MÁRIO FONSECA PAULINO, UNIVERSIDADE FEDERAL DE VIÇOSA; SEBASTIÃO DE CAMPOS VALADARES FILHO, UNIVERSIDADE FEDERAL DE VIÇOSA; EDENIO DETMANN, UNIVERSIDADE FEDERAL DE VIÇOSA; JUCILENE CAVALI, UNIVERSIDADE FEDERAL DE RONDÔNIA; MAYKEL FRANKLIM LIMA SALES, CPAF-AC; ÉRITON EGIDIO LISBOA VALENTE, UNIVERSIDADE FEDERAL DE VIÇOSA; VICTOR REZENDE MOREIRA COUTO, UNIVERSIDADE FEDERAL DE VIÇOSA.pt_BR
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