Monitoring transition dairy cow behaviour for the detection of subclinical ketosis

dc.contributor.advisorDeVries, Trevor
dc.contributor.authorKaufman, Emily I.
dc.date.accessioned2015-09-09T15:00:12Z
dc.date.available2015-09-09T15:00:12Z
dc.date.copyright2015-08
dc.date.created2015-08-27
dc.date.issued2015-09-09
dc.degree.departmentDepartment of Animal and Poultry Scienceen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameMaster of Scienceen_US
dc.degree.programmeAnimal and Poultry Scienceen_US
dc.description.abstractAn observational study of 4 free-stall farms was conducted to investigate the associations of cow behaviour and cow-level factors with subclinical ketosis (SCK) in transition dairy cows. Rumination time, lying behaviour, SCK, and other peripartum disorders were monitored from 2 wk before until 4 wk after calving for 339 cows. Lower rumination times and higher lying times in multiparous cows during the wk after calving (wk+1) were associated with increased odds of SCK with another health problem. Factors associated with lower odds of SCK in multiparous cows included: lower stall stocking density during wk+1, shorter dry period, lower milk yield during the previous lactation, and smaller BCS loss over transition. These results suggest monitoring behaviour may be useful in identifying multiparous cows with SCK and another health problem in wk+1; monitoring rumination behaviour, specifically, may aid in the early identification of multiparous cows at higher risk for developing SCK post-calving.en_US
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada
dc.description.sponsorshipOntario Ministry of Agriculture, Food and Rural Affairs
dc.identifier.urihttp://hdl.handle.net/10214/9188
dc.language.isoenen_US
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectTransitionen_US
dc.subjectRuminationen_US
dc.subjectLying Behaviouren_US
dc.subjectSubclinical Ketosisen_US
dc.subjectHealthen_US
dc.subjectMonitoringen_US
dc.subjectSensorsen_US
dc.titleMonitoring transition dairy cow behaviour for the detection of subclinical ketosisen_US
dc.typeThesisen_US

Files

Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Kaufman_Emily_201508_MSc.pdf
Size:
624.2 KB
Format:
Adobe Portable Document Format