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https://hdl.handle.net/1959.11/14698
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DC Field | Value | Language |
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dc.contributor.author | Brown, David James | en |
dc.contributor.author | Savage, Darryl | en |
dc.contributor.author | Hinch, Geoffrey | en |
dc.date.accessioned | 2014-04-14T14:28:00Z | - |
dc.date.issued | 2014 | - |
dc.identifier.citation | Animal Production Science, 54(2), p. 207-213 | en |
dc.identifier.issn | 1836-5787 | en |
dc.identifier.issn | 1836-0939 | en |
dc.identifier.uri | https://hdl.handle.net/1959.11/14698 | - |
dc.description.abstract | Sheep liveweight is an indicator of nutritional status, and its measure may be used as an aid to nutritional management. When walk-over weighing (WOW), a remote weighing concept for grazing sheep, is combined with radio frequency identification (RFID), resulting 'RFID-linked WOW' data may enable the liveweight of individual sheep to be tracked over time. We investigated whether RFID-linked WOW data is sufficiently repeatable and frequent to generate individual liveweight estimates with 95% confidence intervals (95% CI) of <2 kg (a sufficient level of error to account for fluctuating gut fill) for a flock within timeframes suitable for management (1-day and 5-day timeframes). Four flocks of sheep were used to generate RFID-linked WOW datasets. RFID-linked WOW data were organised into three groups: raw (unfiltered), coarse filtered (remove all sheep-weights outside the flock's liveweight range), and fine filtered (remove all sheep-weights outside a 25% range of a recent flock average reference liveweight). The repeatability of raw (unfiltered) RFID-linked WOW data was low (0.20), while a coarse (0.46) and fine (0.76) data filter improved repeatability. The 95% CI of raw RFID-linked WOW data was 27 kg, and was decreased by a coarse (11 kg) and fine (6 kg) data filter. Increasing the number of raw, coarse and fine-filtered data points to 190, 30 and 12 sheep-weights, respectively, decreased the 95% CI to <2 kg. The mean cumulative percentage of sheep achieving >11 fine-filtered RFID-linked WOW sheep-weights within a 1-day and 5-day timeframe was 0 and 10%, respectively. The null hypothesis was accepted: RFID-linked WOW data had low repeatability and was unable to generate liveweight estimates with a 95% CI of less than 2 kg within a suitable timeframe. Therefore, at this stage, RFID-linked WOW is not recommended for on-farm decision making of individual sheep. | en |
dc.language | en | en |
dc.publisher | CSIRO Publishing | en |
dc.relation.ispartof | Animal Production Science | en |
dc.title | Repeatability and frequency of in-paddock sheep walk-over weights: implications for individual animal management | en |
dc.type | Journal Article | en |
dc.identifier.doi | 10.1071/AN12311 | en |
dcterms.accessRights | Gold | en |
dc.subject.keywords | Animal Management | en |
local.contributor.firstname | David James | en |
local.contributor.firstname | Darryl | en |
local.contributor.firstname | Geoffrey | en |
local.subject.for2008 | 070203 Animal Management | en |
local.subject.seo2008 | 830311 Sheep - Wool | en |
local.profile.school | School of Environmental and Rural Science | en |
local.profile.school | School of Environmental and Rural Science | en |
local.profile.email | davidb@holmessackett.com.au | en |
local.profile.email | dsavage2@une.edu.au | en |
local.profile.email | ghinch@une.edu.au | en |
local.output.category | C1 | en |
local.record.place | au | en |
local.record.institution | University of New England | en |
local.identifier.epublicationsrecord | une-20140317-151043 | en |
local.publisher.place | Australia | en |
local.format.startpage | 207 | en |
local.format.endpage | 213 | en |
local.identifier.scopusid | 84891612630 | en |
local.peerreviewed | Yes | en |
local.identifier.volume | 54 | en |
local.identifier.issue | 2 | en |
local.title.subtitle | implications for individual animal management | en |
local.access.fulltext | Yes | en |
local.contributor.lastname | Brown | en |
local.contributor.lastname | Savage | en |
local.contributor.lastname | Hinch | en |
dc.identifier.staff | une-id:dbrown33 | en |
dc.identifier.staff | une-id:dsavage2 | en |
dc.identifier.staff | une-id:ghinch | en |
local.profile.orcid | 0000-0003-4731-865X | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.identifier.unepublicationid | une:14913 | en |
local.identifier.handle | https://hdl.handle.net/1959.11/14698 | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
local.title.maintitle | Repeatability and frequency of in-paddock sheep walk-over weights | en |
local.output.categorydescription | C1 Refereed Article in a Scholarly Journal | en |
local.search.author | Brown, David James | en |
local.search.author | Savage, Darryl | en |
local.search.author | Hinch, Geoffrey | en |
local.uneassociation | Unknown | en |
local.year.published | 2014 | en |
local.subject.for2020 | 300302 Animal management | en |
local.subject.seo2020 | 100413 Sheep for wool | en |
Appears in Collections: | Journal Article |
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