Applying equineRSU and seasonal livestock correction to wider equine stud farm types

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dc.citation.volumeLatest Articles
dc.contributor.authorChin YY
dc.contributor.authorAirey H
dc.contributor.authorHorne DJ
dc.contributor.authorGee EK
dc.contributor.authorBack PJ
dc.contributor.authorSclater J
dc.contributor.authorRogers CW
dc.contributor.editorSneddon N
dc.date.accessioned2024-10-01T22:08:40Z
dc.date.available2024-10-01T22:08:40Z
dc.date.issued2024-09-12
dc.description.abstractTo adjust for potential overestimations in the nitrogen excretion by horses within OverseerĀ®, a revised stock unit system has been proposed (equineRSU). These equineRSU were generated and validated using a medium-sized equine farm as a model farm. The aim of this study was to test the application of the equineRSU and seasonal stock number adjustment on a more complex farming model. Livestock numbers and management data were captured prospectively for the base property (128.8 ha) of a large multi-property commercial breeding stud (3 support properties, 556 ha total area) between June 2022 and May 2023. The monthly on-farm metabolisable energy (ME) requirement and pasture demand were deterministically modelled with both a customised feed budget using livestock class and weight or using the equineRSU and monthly adjusted stock numbers. There were multiple complex movements of horses on and off the property in the different stock classes across the year, with stock management reflecting seasonal periods of high stocking density. There was good agreement (6% variance) between actual ME demand (complex feed budget) and estimated feed demand (simplistic equineRSU model) of 4,387,187 MJ vs 4,102,770 MJ. This suggests that the equineRSU could be used on complex equine farm systems within OverseerĀ®.
dc.description.confidentialfalse
dc.edition.edition2024
dc.format.pagination1-11
dc.identifier.citationChin YY, Airey H, Horne DJ, Gee EK, Back PJ, Sclater J, Rogers CW. (2024). Applying equineRSU and seasonal livestock correction to wider equine stud farm types. New Zealand Journal of Agricultural Research. Latest Articles. (pp. 1-11).
dc.identifier.doi10.1080/00288233.2024.2399341
dc.identifier.eissn1175-8775
dc.identifier.elements-typejournal-article
dc.identifier.issn0028-8233
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/71551
dc.languageEnglish
dc.publisherTaylor and Francis Group
dc.publisher.urihttps://www.tandfonline.com/doi/full/10.1080/00288233.2024.2399341
dc.relation.isPartOfNew Zealand Journal of Agricultural Research
dc.rights(c) The authoren
dc.rights.licenseCC BYen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectHorse
dc.subjectthoroughbred
dc.subjectN leaching
dc.subjectfarm system
dc.subjectnutrient budget
dc.subjectenergy requirement
dc.subjectlivestock management
dc.subjectfeeding
dc.titleApplying equineRSU and seasonal livestock correction to wider equine stud farm types
dc.typeJournal article
pubs.elements-id491559
pubs.organisational-groupOther
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