Show simple item record

dc.contributor.authorSeeker LAen
dc.contributor.authorIlska JJen
dc.contributor.authorPsifidi Aen
dc.contributor.authorWilbourn RVen
dc.contributor.authorUnderwood SLen
dc.contributor.authorFairlie Jen
dc.contributor.authorHolland Ren
dc.contributor.authorFroy Hen
dc.contributor.authorBagnall Aen
dc.contributor.authorWhitelaw Ben
dc.contributor.authorCoffey MPen
dc.contributor.authorNussey DHen
dc.contributor.authorBanos Gen
dc.date.accessioned2018-02-13T11:46:32Z
dc.date.available2018-02-13T11:46:32Z
dc.date.issued2018
dc.identifier.citation13:2
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/11262/11395
dc.identifier.urihttps://doi.org/10.1371/journal.pone.0192864
dc.description.abstractTelomeres cap the ends of linear chromosomes and shorten with age in many organisms. In humans short telomeres have been linked to morbidity and mortality. With the accumulation of longitudinal datasets the focus shifts from investigating telomere length (TL) to exploring TL change within individuals over time. Some studies indicate that the speed of telomere attrition is predictive of future disease. The objectives of the present study were to 1) characterize the change in bovine relative leukocyte TL (RLTL) across the lifetime in Holstein Friesian dairy cattle, 2) estimate genetic parameters of RLTL over time and 3) investigate the association of differences in individual RLTL profiles with productive lifespan. RLTL measurements were analysed using Legendre polynomials in a random regression model to describe TL profiles and genetic variance over age. The analyses were based on 1,328 repeated RLTL measurements of 308 female Holstein Friesian dairy cattle. A quadratic Legendre polynomial was fitted to the fixed effect of age in months and to the random effect of the animal identity. Changes in RLTL, heritability and within-trait genetic correlation along the age trajectory were calculated and illustrated. At a population level, the relationship between RLTL and age was described by a positive quadratic function. Individuals varied significantly regarding the direction and amount of RLTL change over life. The heritability of RLTL ranged from 0.36 to 0.47 (SE= 0.05-0.08) and remained statistically unchanged over time. The genetic correlation of RLTL at birth with measurements later in life decreased with the time interval between samplings from near unity to 0.69, indicating that TL later in life might be regulated by different genes than TL early in life. Even though animals differed in their RLTL profiles significantly, those differences were not correlated with productive lifespan (p=0.954).en
dc.description.sponsorshipBBSRC: BB/L007312/1en
dc.language.isoenen
dc.relation.isformatof14775en
dc.relation.ispartofPLoS ONEen
dc.rightsCopyright © 2018 Seeker et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleLongitudinal changes in telomere length and associated genetic parameters in dairy cattle analysed using random regression modelsen
dc.typeArticleen
dc.description.versionVersion of record
dc.extent.pageNumberse0192864
rioxxterms.publicationdate2018-02-13
rioxxterms.typeJournal Article/Reviewen
dcterms.dateAccepted2018-01-31
refterms.accessExceptionNAen
refterms.dateDeposit2018-02-13
refterms.depositExceptionNAen
refterms.panelUnspecifieden
refterms.technicalExceptionNAen
refterms.versionAMen


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record

Copyright © 2018 Seeker et al. 

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Except where otherwise noted, this item's license is described as Copyright © 2018 Seeker et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.