Cow- and herd-level risk factors for lameness in partly housed pasture-based dairy cows

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dc.citation.issue2
dc.citation.volume105
dc.contributor.authorBrowne N
dc.contributor.authorHudson CD
dc.contributor.authorCrossley RE
dc.contributor.authorSugrue K
dc.contributor.authorKennedy E
dc.contributor.authorHuxley JN
dc.contributor.authorConneely M
dc.coverage.spatialUnited States
dc.date.accessioned2023-12-04T00:38:27Z
dc.date.accessioned2024-07-25T06:47:58Z
dc.date.available2021-11-19
dc.date.available2023-12-04T00:38:27Z
dc.date.available2024-07-25T06:47:58Z
dc.date.issued2022-02
dc.description.abstractLameness in dairy cows is a major animal welfare concern and has substantial economic impact through reduced production and fertility. Previous risk factor analyses have focused on housed systems, rather than those where cows were grazed for the majority of the year and housed only for the winter period. Therefore, the aim of this observational study was to identify a robust set of cow-level and herd-level risk factors for lameness in a pasture-based system, based on predictors from the housing and grazing periods. Ninety-nine farms were visited during the grazing period (April 2019–September 2019), and 85 farms were revisited during the housing period (October 2019–February 2020). At each visit, all lactating cows were scored for lameness (0 = good mobility, 1 = imperfect mobility, 2 = impaired mobility, 3 = severely impaired mobility), and potential herd-level risk factors were recorded through questionnaires and infrastructure measurements. Routine cow-level management data were also collected. Important risk factors for lameness were derived though triangulation of results from elastic net regression, and from logistic regression model selection using modified Bayesian information criterion. Both selection methods were implemented using bootstrapping. This novel approach has not previously been used in a cow-level or herd-level risk factor analysis in dairy cows, to the authors' knowledge. The binary outcome variable was lameness status, whereby cows with a lameness score of 0 or 1 were classed as non-lame and cows with a score of 2 or 3 were classed as lame. Cow-level risk factors for increased lameness prevalence were age and genetic predicted transmitting ability for lameness. Herd-level risk factors included farm and herd size, stones in paddock gateways, slats on cow tracks near the collecting yard, a sharper turn at the parlor exit, presence of digital dermatitis on the farm, and the farmers' perception of whether lameness was a problem on the farm. This large-scale study identified the most important associations between risk factors and lameness, based on the entire year (grazing and housing periods), providing a focus for future randomized clinical trials.
dc.format.pagination1418-1431
dc.identifier.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/34802737
dc.identifier.citationBrowne N, Hudson CD, Crossley RE, Sugrue K, Kennedy E, Huxley JN, Conneely M. (2022). Cow- and herd-level risk factors for lameness in partly housed pasture-based dairy cows.. J Dairy Sci. 105. 2. (pp. 1418-1431).
dc.identifier.doi10.3168/jds.2021-20767
dc.identifier.eissn1525-3198
dc.identifier.elements-typejournal-article
dc.identifier.issn0022-0302
dc.identifier.piiS0022-0302(21)01035-3
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/70904
dc.languageeng
dc.publisherElsevier Inc and Fass Inc on behalf of the American Dairy Science Association
dc.relation.isPartOfJ Dairy Sci
dc.rights(c) 2022 The Author/s
dc.rightsCC BY
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectdairy cow
dc.subjectlameness
dc.subjectmachine-learning
dc.subjectpasture-based
dc.subjectrisk factor
dc.subjectAnimals
dc.subjectBayes Theorem
dc.subjectCattle
dc.subjectCattle Diseases
dc.subjectDairying
dc.subjectFemale
dc.subjectHousing, Animal
dc.subjectLactation
dc.subjectLameness, Animal
dc.subjectRisk Factors
dc.titleCow- and herd-level risk factors for lameness in partly housed pasture-based dairy cows
dc.typeJournal article
pubs.elements-id449868
pubs.organisational-groupOther
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