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dc.contributor.authorDavid, Ingrid
dc.contributor.authorSánchez, Juan‑Pablo
dc.contributor.authorPiles, Miriam
dc.contributor.otherProducció Animalca
dc.date.accessioned2019-05-08T14:32:24Z
dc.date.available2019-05-08T14:32:24Z
dc.date.issued2018-05-10
dc.identifier.citationDavid, Ingrid, Juan-Pablo Sánchez, and Miriam Piles. 2018. "Longitudinal Analysis Of Direct And Indirect Effects On Average Daily Gain In Rabbits Using A Structured Antedependence Model". Genetics Selection Evolution 50 (1). Springer Nature. doi:10.1186/s12711-018-0395-9.ca
dc.identifier.issn0999-193Xca
dc.identifier.urihttp://hdl.handle.net/20.500.12327/383
dc.description.abstractBackground: Indirect genetic efects (IGE) are important components of various traits in several species. Although the intensity of social interactions between partners likely vary over time, very few genetic studies have investigated how IGE vary over time for traits under selection in livestock species. To overcome this issue, our aim was: (1) to ana‑ lyze longitudinal records of average daily gain (ADG) in rabbits subjected to a 5-week period of feed restriction using a structured antedependence (SAD) model that includes IGE and (2) to evaluate, by simulation, the response to selec‑ tion when IGE are present and genetic evaluation is based on a SAD model that includes IGE or not. Results: The direct genetic variance for ADG (g/d) increased from week 1 to 3 [from 8.03 to 13.47 (g/d)2 ] and then decreased [6.20 (g/d)2 at week 5], while the indirect genetic variance decreased from week 1 to 4 [from 0.43 to 0.22 (g/d)2 ]. The correlation between the direct genetic efects of diferent weeks was moderate to high (ranging from 0.46 to 0.86) and tended to decrease with time interval between measurements. The same trend was observed for IGE for weeks 2 to 5 (correlations ranging from 0.62 to 0.91). Estimates of the correlation between IGE of week 1 and IGE of the other weeks did not follow the same pattern and correlations were lower. Estimates of correlations between direct and indirect efects were negative at all times. After seven generations of simulated selection, the increase in ADG from selection on EBV from a SAD model that included IGE was higher (~30%) than when those efects were omitted. Conclusions: Indirect genetic efects are larger just after mixing animals at weaning than later in the fattening period, probably because of the establishment of social hierarchy that is generally observed at that time. Accounting for IGE in the selection criterion maximizes genetic progress.ca
dc.format.extent13ca
dc.language.isoengca
dc.publisherBMCca
dc.relation.ispartofGenetics Selection Evolutionca
dc.rightsAttribution 4.0 Internationalca
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleLongitudinal analysis of direct and indirect effects on average daily gain in rabbits using a structured antedependence modelca
dc.typeinfo:eu-repo/semantics/articleca
dc.description.versionreprintca
dc.embargo.termscapca
dc.relation.projectIDEC/H2020/633531/EU/Adapting the feed, the animal and the feeding techniques to improve the efficiency and sustainability of monogastric livestock production systems/Feed-a-Geneca
dc.relation.projectIDINIA/Programa Nacional de Proyectos de Investigación Fundamental/RTA2011-00064-00-00/ES/Mejora genética de la eficacia alimentaria en especies prolíficas/ca
dc.subject.udc619ca
dc.identifier.doihttps://doi.org/10.1186/s12711-018-0395-9ca
dc.contributor.groupGenètica i Millora Animalca


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