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dc.contributor.authorDunne, Fíona L
dc.contributor.authorBerry, Donagh
dc.contributor.authorKelleher, Margaret M
dc.contributor.authorEvans, Ross D
dc.contributor.authorWalsh, Siobhan W
dc.contributor.authorAmer, Peter R
dc.date.accessioned2022-08-04T15:40:36Z
dc.date.available2022-08-04T15:40:36Z
dc.date.issued2020-10-13
dc.identifier.citationFíona L Dunne, Donagh P Berry, Margaret M Kelleher, Ross D Evans, Siobhan W Walsh, Peter R Amer, An index framework founded on the future profit potential of female beef cattle to aid the identification of candidates for culling, Journal of Animal Science, Volume 98, Issue 11, November 2020, skaa334, https://doi.org/10.1093/jas/skaa334en_US
dc.identifier.issn0021-8812
dc.identifier.urihttp://hdl.handle.net/11019/2817
dc.descriptionpeer-revieweden_US
dc.description.abstractMeticulous culling decisions, coupled with careful breeding decisions, are fundamental to shifting a population distribution in the favorable direction and improving profit per cow. Nevertheless, there is a paucity of easy-to-use dynamic tools to aid in culling decisions in beef cattle. The motivation for the present study was to develop a monetary-based culling tool, here referred to as the Beef Female’s Profit Potential (BFPP), to identify females for culling. The BFPP reflects the expected lifetime profitability of an individual female in a herd for the expected remainder of her lifetime; this profit included that of the beef female herself as well as her progeny. The BFPP index framework was composed of 4 subindexes reflecting the value of an animal: (1) as a nulliparae (this was voided if the cow had already calved), (2) for the remainder of her current parity, (3) summed across each of her expected remaining parities, and (4) when she is retained within the herd and not voluntarily culled. Each subindex was comprised of different components reflecting both genetic and non-genetic effects associated with each female. Transition matrices predicting the expected longevity of each female and their expected month of calving were also utilized in calculating the expected remaining lifetime profitability of each female. The BFPP index was validated on 21,102 beef cows as well as their harvested progeny from 875 herds by stratifying the cows, within herd, into 4 strata based on their BFPP. The mean of the within-herd correlation between the BFPP and the Irish national replacement (i.e., breeding) index was, on average, 0.45 indicating the shortcomings of the breeding index as a culling tool. Cows within the top BFPP stratum had a genetic expectation of accruing almost an additional €36 profit per calving, relative to cows within the worst stratum; when validated on the cow’s own calving interval and survival performance as well as their progeny’s carcass performance, the actual phenotypic value was estimated to be an additional €32 profit per calving. A proportion of this additional profit was due to the harvested progeny of the high BFPP cows having, on average, heavier, more conformed carcasses with less fat cover relative to their poor BFPP contemporaries. This BFPP framework is a useful and easy-to-use tool to aid in producer decision making on the choice of females to voluntarily cull but also on which replacement heifers to graduate into the mature herd.en_US
dc.description.sponsorshipDepartment of Agriculture, Food and the Marine, Ireland
dc.language.isoenen_US
dc.publisherOxford University Press (OUP)en_US
dc.relation.ispartofseriesJournal of Animal Science;vol 98
dc.rightsAttribution-NonCommercial-ShareAlike 4.0 International*
dc.rights.urihttps://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/*
dc.subjectcullen_US
dc.subjectheterosisen_US
dc.subjectpermanent environmenten_US
dc.subjectselection indexen_US
dc.titleAn index framework founded on the future profit potential of female beef cattle to aid the identification of candidates for cullingen_US
dc.typeArticleen_US
dc.identifier.doihttps://doi.org/10.1093/jas/skaa334
dc.contributor.sponsorScience Foundation Irelanden_US
dc.contributor.sponsorDepartment of Agriculture, Food and Marineen_US
dc.contributor.sponsorEuropean Unionen_US
dc.contributor.sponsorGrantNumber16/RC/3835en_US
dc.contributor.sponsorGrantNumberMultiReproen_US
dc.contributor.sponsorGrantNumber727213en_US
dc.source.volume98
dc.source.issue11
refterms.dateFOA2022-08-04T15:40:37Z
dc.source.journaltitleJournal of Animal Science
dc.identifier.eissn1525-3163


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