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dc.contributor.authorTotty, Victoria
dc.contributor.authorGreenwood, Sabrina
dc.contributor.authorBryant, Racheal H.
dc.contributor.authorEdwards, Grant
dc.date.accessioned2016-10-09T22:08:51Z
dc.date.available2012-11-19en
dc.date.issued2013-01
dc.date.submitted2012-09-22en
dc.identifier.citationTotty, V.K., Greenwood, S.L., Bryant, R.H. & Edwards, G.R. (2013). Nitrogen partitioning and milk production of dairy cows grazing simple and diverse pastures. Journal of Dairy Science, 96(1), 141-149. DOI:https://doi.org/10.3168/jds.2012-5504
dc.identifier.issn0022-0302en
dc.identifier.urihttps://hdl.handle.net/10182/7454
dc.description.abstractResearch was conducted to examine the effects of a diverse pasture mix on dry matter intake, milk yield, and N partitioning of lactating dairy cows. A pasture containing only ryegrass and white clover (RG), or high sugar ryegrass and white clover (HS), was compared with a diverse pasture mix (HSD) including chicory, plantain, lotus, high-sugar ryegrass, and white clover. The experiment was conducted over a 10-d period using 3 groups of 12 cows in late lactation. No difference was observed in dry matter (14.3 kg of dry matter/cow per day) or N (583 g of N/cow per day) intake between treatments. The cows grazing the HSD pasture had an increased milk yield (16.9 kg/d) compared with those grazing the simple RG and HS pastures (15.2 and 14.7 kg/d, respectively). However, no differences were observed in milk solids yield for the 3 treatments. A tendency toward greater milk protein yields in the HSD group resulted in improved N use efficiency for milk of 20.4% from the cows fed HSD, compared with 17.8 and 16.7% from cows in the RG and HS treatments, respectively. Urinary N excretion was lower from the cows fed HSD, at 353.8 g/d, compared with 438.3 and 426.6 g/d for cows fed RG and HS, respectively. These results suggest that the use of pastures containing chicory, lotus, and plantain can contribute to the goal of reducing N losses from cows in late lactation.en
dc.format.extent141-149en
dc.language.isoen
dc.publisherElsevier on behalf of the American Dairy Science Association
dc.relationThe original publication is available from - Elsevier on behalf of the American Dairy Science Association - https://doi.org/10.3168/jds.2012-5504en
dc.relation.urihttps://doi.org/10.3168/jds.2012-5504en
dc.rightsCopyright © 2016 Elsevier B.V.
dc.subjectnitrogen partitioningen
dc.subjectmilk yielden
dc.subjectpasture speciesen
dc.subjectdairy cowen
dc.subjectDairy & Animal Scienceen
dc.subject.meshMilken
dc.subject.meshFecesen
dc.subject.meshAnimalsen
dc.subject.meshCattleen
dc.subject.meshMelilotusen
dc.subject.meshLoliumen
dc.subject.meshNitrogenen
dc.subject.meshUreaen
dc.subject.meshCreatinineen
dc.subject.meshDieten
dc.subject.meshLactationen
dc.subject.meshDairyingen
dc.subject.meshFemaleen
dc.titleNitrogen partitioning and milk production of dairy cows grazing simple and diverse pasturesen
dc.typeJournal Article
lu.contributor.unitLincoln University
lu.contributor.unitFaculty of Agriculture and Life Sciences
lu.contributor.unitDepartment of Agricultural Sciences
lu.contributor.unitVice Chancellor's Office
dc.identifier.doi10.3168/jds.2012-5504en
dc.relation.isPartOfJournal of Dairy Scienceen
pubs.issue1en
pubs.organisational-group/LU
pubs.organisational-group/LU/Agriculture and Life Sciences
pubs.organisational-group/LU/Agriculture and Life Sciences/AGSC
pubs.organisational-group/LU/Research Management Office
pubs.organisational-group/LU/Research Management Office/PE20
pubs.organisational-group/LU/Research Management Office/QE18
pubs.organisational-group/LU/Vice Chancellor's Office
pubs.publication-statusPublisheden
pubs.volume96en
dc.identifier.eissn1525-3198en
lu.identifier.orcid0000-0003-4165-007X
lu.identifier.orcid0000-0002-5004-8147


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