Effects of feeding a spray-dried multivalent polyclonal antibody preparation on feedlot performance, feeding behavior, carcass characteristics, rumenitis, and blood gas profile of Brangus and Nellore yearling bulls

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dc.contributor.authorMillen, D. D. [UNESP]
dc.contributor.authorPacheco, R. D.L.
dc.contributor.authorDiLorenzo, N.
dc.contributor.authorMartins, C. L. [UNESP]
dc.contributor.authorMarino, C. T.
dc.contributor.authorBastos, J. P.S.T. [UNESP]
dc.contributor.authorMariani, T. M. [UNESP]
dc.contributor.authorBarducci, R. S. [UNESP]
dc.contributor.authorSarti, L. M.N. [UNESP]
dc.contributor.authorDiCostanzo, A.
dc.contributor.authorRodrigues, P. H.M.
dc.contributor.authorArrigoni, M. D.B. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionMato Grosso State Agricultural and Extension Service
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversity of Florida
dc.contributor.institutionUniversity of Minnesota
dc.date.accessioned2018-12-11T17:28:45Z
dc.date.available2018-12-11T17:28:45Z
dc.date.issued2015-09-08
dc.description.abstractThe objective of this study was to evaluate the effects of replacing monensin (MON) with a spray-dried multivalent polyclonal antibody preparation (PAP) against several ruminal microorganisms on feedlot performance, carcass characteristics, feeding behavior, blood gas profile, and the rumenitis incidence of Brangus and Nellore yearling bulls. The study was designed as a completely randomized design with a 2 × 2 factorial arrangement, replicated 6 times (4 bulls per pen and a total of 24 pens), in which bulls (n = 48) of each biotype were fed diets containing either MON fed at 300 mg/d or PAP fed at 3 g/d. No significant feed additive main effects were observed for ADG (P = 0.27), G:F (P = 0.28), HCW (P = 0.99), or dressing percentage (P = 0.80). However, bulls receiving PAP had greater DMI (P = 0.02) and larger (P = 0.02) final LM area as well as greater (P < 0.01) blood concentrations of bicarbonate and base excess in the extracellular fluid than bulls receiving MON. Brangus bulls had greater (P < 0.01) ADG and DMI expressed in kilograms, final BW, heavier HCW, and larger initial and final LM area than Nellore bulls. However, Nellore bulls had greater daily DMI fluctuation (P < 0.01), expressed as a percentage, and greater incidence of rumenitis (P = 0.05) than Brangus bulls. In addition, Brangus bulls had greater (P < 0.01) DMI per meal and also presented lower (P < 0.01) DM and NDF rumination rates when compared with Nellore bulls. Significant interactions (P < 0.05) between biotype and feed additive were observed for SFA, unsaturated fatty acids (UFA), MUFA, and PUFA concentrations in adipose tissues. When Nellore bulls were fed PAP, fat had greater (P < 0.05) SFA and PUFA contents but less (P < 0.01) UFA and MUFA than Nellore bulls receiving MON. For Brangus bulls, MON led to greater (P < 0.05) SFA and PUFA and less (P < 0.05) UFA and MUFA than Brangus bulls fed PAP. Feeding a spraydried PAP led to similar feedlot performance compared with that when feeding MON. Spray-dried PAP might provide a new technology alternative to ionophores.en
dc.description.affiliationAnimal Science College São Paulo State University (UNESP)
dc.description.affiliationMato Grosso State Agricultural and Extension Service
dc.description.affiliationVeterinary Medicine and Animal Science College São Paulo State University (UNESP)
dc.description.affiliationDepartment of Animal Nutrition and Production University of São Paulo
dc.description.affiliationNorth Florida Research and Education Center University of Florida
dc.description.affiliationDepartment of Animal Science University of Minnesota
dc.description.affiliationUnespAnimal Science College São Paulo State University (UNESP)
dc.description.affiliationUnespVeterinary Medicine and Animal Science College São Paulo State University (UNESP)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent4387-4400
dc.identifierhttp://dx.doi.org/10.2527/jas.2015-9227
dc.identifier.citationJournal of Animal Science, v. 93, n. 9, p. 4387-4400, 2015.
dc.identifier.doi10.2527/jas.2015-9227
dc.identifier.file2-s2.0-84975832695.pdf
dc.identifier.issn1525-3163
dc.identifier.issn0021-8812
dc.identifier.scopus2-s2.0-84975832695
dc.identifier.urihttp://hdl.handle.net/11449/178102
dc.language.isoeng
dc.relation.ispartofJournal of Animal Science
dc.relation.ispartofsjr0,848
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectBrangus
dc.subjectFeedlot
dc.subjectMonensin
dc.subjectNellore
dc.subjectPolyclonal antibody
dc.titleEffects of feeding a spray-dried multivalent polyclonal antibody preparation on feedlot performance, feeding behavior, carcass characteristics, rumenitis, and blood gas profile of Brangus and Nellore yearling bullsen
dc.typeArtigo

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