Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/21394
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dc.contributor.authorHegarty, Rogeren
dc.contributor.authorMiller, Jen
dc.contributor.authorOelbrandt, Nen
dc.contributor.authorHegarty, Jenniferen
dc.contributor.authorLuijben, J P Men
dc.contributor.authorRobinson, Dorothy Len
dc.contributor.authorNolan, John Ven
dc.contributor.authorPerdok, H Ben
dc.date.accessioned2017-06-19T16:03:00Z-
dc.date.issued2016-
dc.identifier.citationJournal of Animal Science, 94(12), p. 5372-5381en
dc.identifier.issn1525-3163en
dc.identifier.issn0021-8812en
dc.identifier.urihttps://hdl.handle.net/1959.11/21394-
dc.description.abstractNitrate supplementation has been shown to be effective in reducing enteric methane emission from ruminants, but there have been few large-scale studies assessing the effects of level of nitrate supplementation on feed intake, animal growth, or carcass and meat quality attributes of beef cattle. A feedlot study was conducted to assess the effects of supplementing 0.25 or 0.45% NPN in dietary DM as either urea (Ur) or calcium nitrate (CaN) on DMI, ADG, G:F, and carcass attributes of feedlot steers (n = 383). The levels of NPN inclusion were selected as those at which nitrate has previously achieved measurable mitigation of enteric methane. The higher level of NPN inclusion reduced ADG as did replacement of Ur with CaN (P < 0.01). A combined analysis of DMI for 139 steers with individual animal intake data and pen-average intakes for 244 bunk-fed steers showed a significant interaction between NPN source and level (P = 0.02) with steers on the high-CaN diet eating less than those on the other 3 diets (P < 0.001). Neither level nor NPN source significantly affected cattle G:F. There was a tendency (P = 0.05) for nitrate-supplemented cattle to have a slower rate of eating (g DMI/min) than Ur-supplemented cattle. When adjusted for BW, neither NPN source nor inclusion level affected cross-sectional area of the LM or fatness measured on the live animal. Similarly, there were no significant main effects of treatments on dressing percentage or fat depth or muscling attributes of the carcass after adjustment for HCW (P > 0.05). Analysis of composited meat samples showed no detectable nitrates or nitrosamines in raw or cooked meat, and the level of nitrate detected in meat from nitrate-supplemented cattle was no higher than for Ur-fed cattle (P > 0.05). We conclude that increasing NPN inclusion from 0.25 to 0.45% NPN in dietary DM and replacing Ur with CaN decreased ADG in feedlot cattle without improving G:F.en
dc.languageenen
dc.publisherAmerican Society of Animal Scienceen
dc.relation.ispartofJournal of Animal Scienceen
dc.titleFeed intake, growth, and body and carcass attributes of feedlot steers supplemented with two levels of calcium nitrate or ureaen
dc.typeJournal Articleen
dc.identifier.doi10.2527/jas.2015-0266en
dc.subject.keywordsAnimal Nutritionen
local.contributor.firstnameRogeren
local.contributor.firstnameJen
local.contributor.firstnameNen
local.contributor.firstnameJenniferen
local.contributor.firstnameJ P Men
local.contributor.firstnameDorothy Len
local.contributor.firstnameJohn Ven
local.contributor.firstnameH Ben
local.subject.for2008070204 Animal Nutritionen
local.subject.seo2008970107 Expanding Knowledge in the Agricultural and Veterinary Sciencesen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailrhegart3@une.edu.auen
local.profile.emailjhegarty@une.edu.auen
local.profile.emaildrobin27@une.edu.auen
local.profile.emailjnolan@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20170228-132317en
local.publisher.placeUnited States of Americaen
local.format.startpage5372en
local.format.endpage5381en
local.identifier.scopusid85008158213en
local.peerreviewedYesen
local.identifier.volume94en
local.identifier.issue12en
local.contributor.lastnameHegartyen
local.contributor.lastnameMilleren
local.contributor.lastnameOelbrandten
local.contributor.lastnameHegartyen
local.contributor.lastnameLuijbenen
local.contributor.lastnameRobinsonen
local.contributor.lastnameNolanen
local.contributor.lastnamePerdoken
dc.identifier.staffune-id:rhegart3en
dc.identifier.staffune-id:jhegartyen
dc.identifier.staffune-id:drobin27en
dc.identifier.staffune-id:jnolanen
local.profile.orcid0000-0001-6113-1141en
local.profile.orcid0000-0001-7949-950Xen
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
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local.identifier.unepublicationidune:21587en
local.identifier.handlehttps://hdl.handle.net/1959.11/21394en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleFeed intake, growth, and body and carcass attributes of feedlot steers supplemented with two levels of calcium nitrate or ureaen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorHegarty, Rogeren
local.search.authorMiller, Jen
local.search.authorOelbrandt, Nen
local.search.authorHegarty, Jenniferen
local.search.authorLuijben, J P Men
local.search.authorRobinson, Dorothy Len
local.search.authorNolan, John Ven
local.search.authorPerdok, H Ben
local.uneassociationUnknownen
local.identifier.wosid000392648200039en
local.year.published2016en
local.fileurl.closedpublishedhttps://rune.une.edu.au/web/retrieve/0c0cb8db-8f45-43bb-b31d-ca87990fbaaeen
local.subject.for2020300303 Animal nutritionen
local.subject.seo2020280101 Expanding knowledge in the agricultural, food and veterinary sciencesen
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