Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/23272
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dc.contributor.authorde Raphelis-Soissan, Ven
dc.contributor.authorNolan, John Ven
dc.contributor.authorGodwin, Ian Ren
dc.contributor.authorNewbold, J Ren
dc.contributor.authorEyre, B Den
dc.contributor.authorErler, D Ven
dc.contributor.authorHegarty, Rogeren
dc.date.accessioned2018-06-15T14:11:00Z
dc.date.issued2017en
dc.identifier.citationJournal of Animal Physiology and Animal Nutrition, 102(1), p. e176-e182en
dc.identifier.issn0931-2439en
dc.identifier.issn1439-0396en
dc.identifier.urihttps://hdl.handle.net/1959.11/23272en
dc.description.abstractSupplementing ruminants with nitrate (NO− 3 ) reduces their enteric methane (CH4) emissions; however, the greenhouse gas (GHG) mitigation achieved can be partially offset by small emissions of nitrous oxide (N2O), a more potent GHG. Sheep were dosed intraruminally with 15NO- 3 to investigate whether dietary NO− 3 is a precursor of N2O and/or di-nitrogen gas (N2), and to quantify the amounts of NO− 3 recovered as N2O and N2 in gas emissions from sheep adapted or not adapted to dietary NO− 3. Ruminally cannulated sheep were adapted to a hay diet supplemented with NO− 3 (n = 3; 10 g NO− 3/kg DM) or urea (n = 3; 5.3 g urea/kg DM). On the day of the experiment all sheep were dosed intraruminally with 15NO− 3 and quickly moved into gas-tight chambers to enable recovery of 15N in N2O and N2 to be measured. Measurements of gases accumulating in the chambers were made over 10 successive 50 min periods; this enabled the amount of N2O produced, and the recovery of 15NO− 3-N in N2O and N2 to be determined over a total of 10 hr. Only 0.04% of labelled NO− 3-N was recovered as N2O, and this was not dependent (p > .05) on whether or not the animals had been adapted to dietary NO− 3. Approximatively 3% of 15NO− 3-N was recovered as 15N2, which was also not dependent (p > .05) on whether sheep had been adapted to NO− 3. Because the kinetics of rumen ammonia (NH3) were uncertain, the recovery of 15N from NO− 3 in rumen NH3 could not accurately be quantified, but our results suggest that approximately 76% of dietary NO− 3 was converted to NH3 in the rumen. We conclude that the small amount of NO− 3 recovered in N2 was evidence of denitrification, previously thought not to occur in the rumen.en
dc.languageenen
dc.publisherWiley-Blackwell Verlag GmbHen
dc.relation.ispartofJournal of Animal Physiology and Animal Nutritionen
dc.titleProduction of N2 and N2O from nitrate ingested by sheepen
dc.typeJournal Articleen
dc.identifier.doi10.1111/jpn.12725en
dc.subject.keywordsAnimal Nutritionen
local.contributor.firstnameVen
local.contributor.firstnameJohn Ven
local.contributor.firstnameIan Ren
local.contributor.firstnameJ Ren
local.contributor.firstnameB Den
local.contributor.firstnameD Ven
local.contributor.firstnameRogeren
local.subject.for2008070204 Animal Nutritionen
local.subject.seo2008960302 Climate Change Mitigation Strategiesen
local.profile.schoolAdministrationen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailvderaph@myune.edu.auen
local.profile.emailjnolan@une.edu.auen
local.profile.emailigodwin@une.edu.auen
local.profile.emailrhegart3@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-chute-20170714-100556en
local.publisher.placeGermanyen
local.format.startpagee176en
local.format.endpagee182en
local.peerreviewedYesen
local.identifier.volume102en
local.identifier.issue1en
local.contributor.lastnamede Raphelis-Soissanen
local.contributor.lastnameNolanen
local.contributor.lastnameGodwinen
local.contributor.lastnameNewbolden
local.contributor.lastnameEyreen
local.contributor.lastnameErleren
local.contributor.lastnameHegartyen
dc.identifier.staffune-id:jnolanen
dc.identifier.staffune-id:igodwinen
dc.identifier.staffune-id:rhegart3en
local.profile.orcid0000-0001-7949-950Xen
local.profile.orcid0000-0001-8848-0755en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:23458en
local.identifier.handlehttps://hdl.handle.net/1959.11/23272en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleProduction of N2 and N2O from nitrate ingested by sheepen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.description.statisticsepubsVisitors: 2<br />Views: 2<br />Downloads: 0en
local.search.authorde Raphelis-Soissan, Ven
local.search.authorNolan, John Ven
local.search.authorGodwin, Ian Ren
local.search.authorNewbold, J Ren
local.search.authorEyre, B Den
local.search.authorErler, D Ven
local.search.authorHegarty, Rogeren
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School of Environmental and Rural Science
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