Genetic inbreeding depression load for fertility traits in Pura Raza Española mares

Fertility is a key factor in the economic success of horse farms. However, it has received little attention due to the difficulty of measuring fertility objectively. Since its studbook creation (1912), the Pura Raza Española (PRE) breed has been a closed population and become high in-bred resulting...

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Autores: Perdomo González, Davinia Isabel, Molina, Antonio, Sánchez Guerrero, María José, Bartolomé Medina, Ester, Varona, L., Valera Córdoba, María Mercedes
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/156569
Acceso en línea:https://hdl.handle.net/11441/156569
https://doi.org/10.1093/jas/skab316
Access Level:acceso abierto
Palabra clave:fertility
genetic parameters
horses
inbreeding depression
inbreeding load heterogeneity
reproductive efficiency
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spelling Genetic inbreeding depression load for fertility traits in Pura Raza Española maresPerdomo González, Davinia IsabelMolina, AntonioSánchez Guerrero, María JoséBartolomé Medina, EsterVarona, L.Valera Córdoba, María Mercedesfertilitygenetic parametershorsesinbreeding depressioninbreeding load heterogeneityreproductive efficiencyFertility is a key factor in the economic success of horse farms. However, it has received little attention due to the difficulty of measuring fertility objectively. Since its studbook creation (1912), the Pura Raza Española (PRE) breed has been a closed population and become high in-bred resulting in inbreeding depression (poor phenotypic values). Nevertheless, heterogeneous effects of inbreeding depression have been detected among founders and nonfounders. The aims of this study were (1) to analyze the genetic parameters for reproductive traits in mares of the PRE horse breed and (2) to estimate, for the first time, the inbreeding depression load associated with common ancestors of the breed. A total of 22,799 mares were analyzed. Heritability estimates ranged from 0.05 (interval between first and second foaling) to 0.16 (age at first foaling), whereas inbreeding depression load ratios ranged from 0.06 (parturition efficiency at 6th foaling) to 0.17 (age at first foaling), for a partial inbreeding coefficient of 10%. Although heritability is related to the variability expressed in the population, inbreeding depression load ratios measure the potential variability, whether expressed in the population or not. Most correlations between additive and inbreeding depression load genetic values were significant (P < 0.001) and of low to moderate magnitude. Our results confirm that individual inbreeding depression loads allow us to select horses that have a genetic value resistant to the deleterious effects of inbreeding.Oxford University PressAgronomía2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/156569https://doi.org/10.1093/jas/skab316reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésJournal of Animal Science, 99 (12), skab316.info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1565692026-06-17T12:51:07Z
dc.title.none.fl_str_mv Genetic inbreeding depression load for fertility traits in Pura Raza Española mares
title Genetic inbreeding depression load for fertility traits in Pura Raza Española mares
spellingShingle Genetic inbreeding depression load for fertility traits in Pura Raza Española mares
Perdomo González, Davinia Isabel
fertility
genetic parameters
horses
inbreeding depression
inbreeding load heterogeneity
reproductive efficiency
title_short Genetic inbreeding depression load for fertility traits in Pura Raza Española mares
title_full Genetic inbreeding depression load for fertility traits in Pura Raza Española mares
title_fullStr Genetic inbreeding depression load for fertility traits in Pura Raza Española mares
title_full_unstemmed Genetic inbreeding depression load for fertility traits in Pura Raza Española mares
title_sort Genetic inbreeding depression load for fertility traits in Pura Raza Española mares
dc.creator.none.fl_str_mv Perdomo González, Davinia Isabel
Molina, Antonio
Sánchez Guerrero, María José
Bartolomé Medina, Ester
Varona, L.
Valera Córdoba, María Mercedes
author Perdomo González, Davinia Isabel
author_facet Perdomo González, Davinia Isabel
Molina, Antonio
Sánchez Guerrero, María José
Bartolomé Medina, Ester
Varona, L.
Valera Córdoba, María Mercedes
author_role author
author2 Molina, Antonio
Sánchez Guerrero, María José
Bartolomé Medina, Ester
Varona, L.
Valera Córdoba, María Mercedes
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Agronomía
dc.subject.none.fl_str_mv fertility
genetic parameters
horses
inbreeding depression
inbreeding load heterogeneity
reproductive efficiency
topic fertility
genetic parameters
horses
inbreeding depression
inbreeding load heterogeneity
reproductive efficiency
description Fertility is a key factor in the economic success of horse farms. However, it has received little attention due to the difficulty of measuring fertility objectively. Since its studbook creation (1912), the Pura Raza Española (PRE) breed has been a closed population and become high in-bred resulting in inbreeding depression (poor phenotypic values). Nevertheless, heterogeneous effects of inbreeding depression have been detected among founders and nonfounders. The aims of this study were (1) to analyze the genetic parameters for reproductive traits in mares of the PRE horse breed and (2) to estimate, for the first time, the inbreeding depression load associated with common ancestors of the breed. A total of 22,799 mares were analyzed. Heritability estimates ranged from 0.05 (interval between first and second foaling) to 0.16 (age at first foaling), whereas inbreeding depression load ratios ranged from 0.06 (parturition efficiency at 6th foaling) to 0.17 (age at first foaling), for a partial inbreeding coefficient of 10%. Although heritability is related to the variability expressed in the population, inbreeding depression load ratios measure the potential variability, whether expressed in the population or not. Most correlations between additive and inbreeding depression load genetic values were significant (P < 0.001) and of low to moderate magnitude. Our results confirm that individual inbreeding depression loads allow us to select horses that have a genetic value resistant to the deleterious effects of inbreeding.
publishDate 2021
dc.date.none.fl_str_mv 2021
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/11441/156569
https://doi.org/10.1093/jas/skab316
url https://hdl.handle.net/11441/156569
https://doi.org/10.1093/jas/skab316
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Journal of Animal Science, 99 (12), skab316.
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 Oxford University Press
publisher.none.fl_str_mv Oxford University Press
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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