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Divergent selection on intramuscular fat in rabbits: Responses to selection and genetic parameters

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Divergent selection on intramuscular fat in rabbits: Responses to selection and genetic parameters

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dc.contributor.author Martínez Álvaro, Marina es_ES
dc.contributor.author Hernández, Pilar es_ES
dc.contributor.author Blasco Mateu, Agustín es_ES
dc.date.accessioned 2018-02-23T05:17:25Z
dc.date.available 2018-02-23T05:17:25Z
dc.date.issued 2016 es_ES
dc.identifier.issn 0021-8812 es_ES
dc.identifier.uri http://hdl.handle.net/10251/98349
dc.description.abstract [EN] A divergent selection experiment on intramuscular fat (IMF) was performed in rabbits. The aim of this study is to estimate the response to selection, the correlated responses in carcass and meat quality traits, and their genetic parameters. Selection criterion was the averaged phenotypic value of IMF measured at 9 wk of age in 2 full-sibs of the candidate. Traits considered were IMF, BW, chilled carcass weight, reference carcass weight, scapular and perirenal fat weights, carcass and meat color, pH, protein and fatty acid composition of meat. Total direct response to selection for IMF was 2.6 phenotypic SD of the trait, around 5% of the mean (1.09 g/100 g) per generation, with both lines following a symmetrical trend. Heritability of IMF was high (0.54), and in general, all traits related to carcass fat depots and IMF fatty acid composition showed high heritabilities (dissectible fat of the carcass, 0.70; MUFA percentage, 0.61; PUFA percentage, 0.45; and PUFA:SFA ratio, 0.42), except SFA percentage (0.09). The other carcass and meat quality traits showed moderate to low heritabilities. Intramuscular fat and dissectible fat percentage showed a low genetic correlation (0.34). Intramuscular fat was positively correlated with MUFA percentage (0.95) and negatively correlated with PUFA percentage (−0.89) and PUFA:SFA ratio (−0.98), corroborated with high correlated responses to selection. The rest of the traits did not show any substantial correlated response except protein content, which was greater in the high-IMF line than in the low-IMF line. es_ES
dc.description.sponsorship This work was supported by project AGL2014-55921-C2-1-P from the Spanish National Research Plan. M. Martinez-Alvaro acknowledges a FPI grant (BES-2012-052655) from the Economy Ministry of Spain. The authors thank Veronica Juste and Federico Pardo for their technical assistance.
dc.language Inglés es_ES
dc.publisher American Society of Animal Science es_ES
dc.relation.ispartof Journal of Animal Science es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Genetic parameters es_ES
dc.subject Intramuscular fat es_ES
dc.subject Rabbits es_ES
dc.subject.classification PRODUCCION ANIMAL es_ES
dc.title Divergent selection on intramuscular fat in rabbits: Responses to selection and genetic parameters es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.2527/jas2016-0590 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//AGL2014-55921-C2-1-P/ES/ESTUDIO GENOMICO Y METABOLOMICO DE VARIAS LINEAS DE SELECCION DIVERGENTE EN CONEJO: EL CONEJO COMO MODELO EXPERIMENTAL/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//BES-2012-052655/ES/BES-2012-052655/ es_ES
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ciencia Animal - Departament de Ciència Animal es_ES
dc.description.bibliographicCitation Martínez Álvaro, M.; Hernández, P.; Blasco Mateu, A. (2016). Divergent selection on intramuscular fat in rabbits: Responses to selection and genetic parameters. Journal of Animal Science. 94(12):4993-5003. https://doi.org/10.2527/jas2016-0590 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/10.2527/jas2016-0590 es_ES
dc.description.upvformatpinicio 4993 es_ES
dc.description.upvformatpfin 5003 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 94 es_ES
dc.description.issue 12 es_ES
dc.identifier.pmid 28046152
dc.relation.pasarela S\321205 es_ES
dc.contributor.funder Ministerio de Economía, Industria y Competitividad es_ES


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