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dc.contributor.authorRing, Siobhan C.
dc.contributor.authorTwomey, Alan J.
dc.contributor.authorByrne, Nicky
dc.contributor.authorKelleher, Margaret M.
dc.contributor.authorPabiou, Thierry
dc.contributor.authorDoherty, Michael L.
dc.contributor.authorBerry, Donagh P.
dc.date.accessioned2019-09-17T15:52:14Z
dc.date.available2019-09-17T15:52:14Z
dc.date.issued2018-09-13
dc.identifier.citationRing, S., Twomey, A., Byrne, N., Kelleher, M., Pabiou, T., Doherty, M. and Berry, D. Genetic selection for hoof health traits and cow mobility scores can accelerate the rate of genetic gain in producer-scored lameness in dairy cows. Journal of Dairy Science, 2018, 101(11), 10034-10047. doi: https://doi.org/10.3168/jds.2018-15009en_US
dc.identifier.urihttp://hdl.handle.net/11019/1789
dc.descriptionpeer-revieweden_US
dc.description.abstractCattle breeding programs that strive to reduce the animal-level incidence of lameness are often hindered by the availability of informative phenotypes. As a result, indicator traits of lameness (i.e., hoof health and morphological conformation scores) can be used to improve the accuracy of selection and subsequent genetic gain. Therefore, the objectives of the present study were to estimate the variance components for hoof health traits using various phenotypes collected from a representative sample of Irish dairy cows. Also of interest to the present study was the genetic relationship between both hoof health traits and conformation traits with producer-scored lameness. Producer-recorded lameness events and linear conformation scores from 307,657 and 117,859 Irish dairy cows, respectively, were used. Data on hoof health (i.e., overgrown sole, white line disease, and sole hemorrhage), mobility scores, and body condition scores were also available from a research study on up to 11,282 Irish commercial dairy cows. Linear mixed models were used to quantify variance components for each trait and to estimate genetic correlations among traits. The estimated genetic parameters for hoof health traits in the present study were greater (i.e., heritability range: 0.005 to 0.27) than previously reported in dairy cows. With the exception of analyses that considered hoof health traits in repeatability models, little difference in estimated variance components existed among the various hoof-health phenotypes. Results also suggest that producer-recorded lameness is correlated with both hoof health (i.e., genetic correlation up to 0.48) and cow mobility (i.e., genetic correlation = 0.64). Moreover, cows that genetically tend to have rear feet that appear more parallel when viewed from the rear are also genetically more predisposed to lameness (genetic correlation = 0.39); genetic correlations between lameness and other feet and leg type traits, as well as between lameness and frame type traits, were not different from zero. Results suggest that if the population breeding goal was to reduce lameness incidence, improve hoof health, or improve cow mobility, genetic selection for either of these traits should indirectly benefit the other traits. Results were used to quantify the genetic gains achievable for lameness when alternative phenotypes are available.en_US
dc.language.isoenen_US
dc.publisherAmerican Dairy Science Associationen_US
dc.relation.ispartofseriesJournal of Dairy Science;Vol. 101 (11)
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.subjectconformation scoreen_US
dc.subjectovergrown soleen_US
dc.subjectsole hemorrhageen_US
dc.subjectwhite line diseaseen_US
dc.titleGenetic selection for hoof health traits and cow mobility scores can accelerate the rate of genetic gain in producer-scored lameness in dairy cowsen_US
dc.typeArticleen_US
dc.embargo.terms2019-09-13en_US
dc.identifier.doihttps://doi.org/10.3168/jds.2018-15009
dc.contributor.sponsorDepartment of Agriculture, Food and the Marineen_US
refterms.dateFOA2019-09-13T00:00:00Z


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