Population history and genetic variability in the Spanish Arab Horse assessed via pedigree analysis

The studbook of the Spanish Arab Horse was analysed in order to assess the available genetic variability in the population via genealogical analyses and to ascertain the influence of different countries in the formation of the population. The Spanish Arab horse studbook could be traced back to the l...

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Autores: Cervantes Navarro, Isabel, Molina, Antonio, Goyache Goñi, Félix María, Gutiérrez García, Juan Pablo, Valera Córdoba, María Mercedes
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2008
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/71320
Acceso en línea:https://hdl.handle.net/11441/71320
https://doi.org/10.1016/j.livsci.2007.02.011
Access Level:acceso abierto
Palabra clave:Spanish Arab horse
Genetic variability
Pedigree analysis
Population history
Within-population
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spelling Population history and genetic variability in the Spanish Arab Horse assessed via pedigree analysisCervantes Navarro, IsabelMolina, AntonioGoyache Goñi, Félix MaríaGutiérrez García, Juan PabloValera Córdoba, María MercedesSpanish Arab horseGenetic variabilityPedigree analysisPopulation historyWithin-populationThe studbook of the Spanish Arab Horse was analysed in order to assess the available genetic variability in the population via genealogical analyses and to ascertain the influence of different countries in the formation of the population. The Spanish Arab horse studbook could be traced back to the late 19th century with a total of 18,880 animals. A 15.7% (2965) of the registered individuals were Arab horses imported from foreign populations. The total number of founders was 1626: from these, 1495 individuals were identified as imported from foreign countries. The sum of the genetic contributions of the founders to the population revealed that those imported from the ‘Middle East’, Poland, the United Kingdom and Egypt had a higher importance in the formation of the Spanish Arab Horse, contributing, respectively, 36.4%, 18.7%, 11.9% and 9.1% of the genetic variability. The effective number of founders was 38.6 and the effective number of ancestors was 19 thus characterising the abusive use of a little number of individuals for reproduction. This was due to a breeding policy that included mating between relatives, but also due to the limited availability of reproductive individuals after the Spanish Civil War. The average inbreeding of the population was 7.0% (9.8% for the individuals born during 1995–2004). Individuals with very high levels of inbreeding (≥12.5%) were 17.7% in the whole population and 26.7% of the individuals born in the last decade. Positive genealogical FIS near 2% characterised a breeding policy including matings between relatives. No clear within-population differentiation (inferred via genealogical FST) could be assessed between sire lines (FST = 0.01) and no differentiation between geographical areas existed. Overall, the Spanish Arab Horse can be described as a population without genetic subdivision and with a mating policy and historical constraints that reduced the available genetic variability regardless of the relatively large size of its founder population. The obtained information will be useful to implement a selection program in the Spanish Arab Horse.ElsevierAgronomíaAGR188: Agronomia2008info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/71320https://doi.org/10.1016/j.livsci.2007.02.011reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésLivestock Science, 2008 (113 (1)), 24-33.https://www.sciencedirect.com/journal/livestock-science/vol/113/issue/1info:eu-repo/semantics/openAccessoai:idus.us.es:11441/713202026-06-17T12:51:07Z
dc.title.none.fl_str_mv Population history and genetic variability in the Spanish Arab Horse assessed via pedigree analysis
title Population history and genetic variability in the Spanish Arab Horse assessed via pedigree analysis
spellingShingle Population history and genetic variability in the Spanish Arab Horse assessed via pedigree analysis
Cervantes Navarro, Isabel
Spanish Arab horse
Genetic variability
Pedigree analysis
Population history
Within-population
title_short Population history and genetic variability in the Spanish Arab Horse assessed via pedigree analysis
title_full Population history and genetic variability in the Spanish Arab Horse assessed via pedigree analysis
title_fullStr Population history and genetic variability in the Spanish Arab Horse assessed via pedigree analysis
title_full_unstemmed Population history and genetic variability in the Spanish Arab Horse assessed via pedigree analysis
title_sort Population history and genetic variability in the Spanish Arab Horse assessed via pedigree analysis
dc.creator.none.fl_str_mv Cervantes Navarro, Isabel
Molina, Antonio
Goyache Goñi, Félix María
Gutiérrez García, Juan Pablo
Valera Córdoba, María Mercedes
author Cervantes Navarro, Isabel
author_facet Cervantes Navarro, Isabel
Molina, Antonio
Goyache Goñi, Félix María
Gutiérrez García, Juan Pablo
Valera Córdoba, María Mercedes
author_role author
author2 Molina, Antonio
Goyache Goñi, Félix María
Gutiérrez García, Juan Pablo
Valera Córdoba, María Mercedes
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Agronomía
AGR188: Agronomia
dc.subject.none.fl_str_mv Spanish Arab horse
Genetic variability
Pedigree analysis
Population history
Within-population
topic Spanish Arab horse
Genetic variability
Pedigree analysis
Population history
Within-population
description The studbook of the Spanish Arab Horse was analysed in order to assess the available genetic variability in the population via genealogical analyses and to ascertain the influence of different countries in the formation of the population. The Spanish Arab horse studbook could be traced back to the late 19th century with a total of 18,880 animals. A 15.7% (2965) of the registered individuals were Arab horses imported from foreign populations. The total number of founders was 1626: from these, 1495 individuals were identified as imported from foreign countries. The sum of the genetic contributions of the founders to the population revealed that those imported from the ‘Middle East’, Poland, the United Kingdom and Egypt had a higher importance in the formation of the Spanish Arab Horse, contributing, respectively, 36.4%, 18.7%, 11.9% and 9.1% of the genetic variability. The effective number of founders was 38.6 and the effective number of ancestors was 19 thus characterising the abusive use of a little number of individuals for reproduction. This was due to a breeding policy that included mating between relatives, but also due to the limited availability of reproductive individuals after the Spanish Civil War. The average inbreeding of the population was 7.0% (9.8% for the individuals born during 1995–2004). Individuals with very high levels of inbreeding (≥12.5%) were 17.7% in the whole population and 26.7% of the individuals born in the last decade. Positive genealogical FIS near 2% characterised a breeding policy including matings between relatives. No clear within-population differentiation (inferred via genealogical FST) could be assessed between sire lines (FST = 0.01) and no differentiation between geographical areas existed. Overall, the Spanish Arab Horse can be described as a population without genetic subdivision and with a mating policy and historical constraints that reduced the available genetic variability regardless of the relatively large size of its founder population. The obtained information will be useful to implement a selection program in the Spanish Arab Horse.
publishDate 2008
dc.date.none.fl_str_mv 2008
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/71320
https://doi.org/10.1016/j.livsci.2007.02.011
url https://hdl.handle.net/11441/71320
https://doi.org/10.1016/j.livsci.2007.02.011
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Livestock Science, 2008 (113 (1)), 24-33.
https://www.sciencedirect.com/journal/livestock-science/vol/113/issue/1
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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