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Early development and reproductive lifespan of rabbit females: implications of growth rate, rearing diet and body condition at first mating

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Early development and reproductive lifespan of rabbit females: implications of growth rate, rearing diet and body condition at first mating

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dc.contributor.author Martinez-Paredes, Eugenio es_ES
dc.contributor.author Ródenas Martínez, Luis es_ES
dc.contributor.author Pascual Amorós, Juan José es_ES
dc.contributor.author Savietto, Davi es_ES
dc.date.accessioned 2019-05-23T20:01:33Z
dc.date.available 2019-05-23T20:01:33Z
dc.date.issued 2018 es_ES
dc.identifier.issn 1751-7311 es_ES
dc.identifier.uri http://hdl.handle.net/10251/120994
dc.description.abstract [EN] Factors influencing early development such as birth weight, nest competition, and the diet received during rearing have been proposed as elements conditioning the future reproductive performance of European rabbit (Oryctolagus cuniculus) females. To evaluate their effects, we followed the life of 1513 females from birth to time of death, culling or censoring (animals alive at a fixed date). Between 0 and 63 days of age 353 females died. From the remaining 1160 females, 864 were chosen based on their birth weight to be transferred from the selection to the production farm. At this farm, 431 females received the control diet (184g of CP, 381 g of NDF and 11.8 MJ of DE per kg DM), while the other 433 received the fibrous diet (134 g of CP, 436g of NDF and 10.0 MJ of DE per kg DM). Throughout the rearing period, we checked for the individual live weight and body condition (perirenal fat thickness) at first artificial insemination. Reproductive lifespan was defined as the number of days between the first parturition and the time of death, culling or censoring. Birth weight affected the survival of newborn females during lactation and the presence of a milk spot at birth (related to nest competition) increased the survivability of newborns weighing <45g (P <0.001). Rearing diet altered the growth curve of females and their body condition at first insemination. The diet also altered the relative risk of death during the rearing period, which was lower among females fed on the fibrous diet (-12.5%; P < 0.001). Therefore, a higher number of females fed with this diet reached their reproductive life, directly affecting the productivity measured per housed female. Fatter females at first insemination had smaller litter sizes and a higher risk of being culled than lean ones (P < 0.05). In general, the fibrous diet reduced the risk of leaving the herd at early rearing, and both birth weight and perirenal fat thickness affected female's reproductive lifespan. An excess of fat (positive change in one unit of perirenal fat) at their first insemination represented an increased the risk of death or elimination of 13%. es_ES
dc.description.sponsorship The authors acknowledge Cesar Villalba (Fabara, Spain), Luis Eroles (Valderrobres, Spain) for the technical support in managing the animals and for kindly providing a space to conduct our study. They also thank the Commission for Science and Technology (CICYT) of the Spanish Government (AGL2014-53405-C2-1-P) for the economic support to carry out this study. es_ES
dc.language Inglés es_ES
dc.publisher Cambridge University Press es_ES
dc.relation info:eu-repo/grantAgreement/MINECO//AGL2014-53405-C2-1-P/ES/MEJORA GENETICA DEL CONEJO DE CARNE:RESPUESTA A LA SELECCION Y SU EFECTO SOBRE LA REPRODUCCION, ALIMENTACION Y SALUD UTILIZANDO UNA POBLACION CONTROL CRIOCONSERVADA/ es_ES
dc.relation.ispartof animal es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Oryctolagus cuniculus es_ES
dc.subject Birth weight es_ES
dc.subject Nutrition es_ES
dc.subject Reproduction es_ES
dc.subject Survival es_ES
dc.subject.classification NUTRICION Y BROMATOLOGIA es_ES
dc.subject.classification PRODUCCION ANIMAL es_ES
dc.title Early development and reproductive lifespan of rabbit females: implications of growth rate, rearing diet and body condition at first mating es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1017/S1751731118000162 es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ciencia Animal - Departament de Ciència Animal es_ES
dc.description.bibliographicCitation Martinez-Paredes, E.; Ródenas Martínez, L.; Pascual Amorós, JJ.; Savietto, D. (2018). Early development and reproductive lifespan of rabbit females: implications of growth rate, rearing diet and body condition at first mating. animal. 12(11):2347-2355. https://doi.org/10.1017/S1751731118000162 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/10.1017/S1751731118000162 es_ES
dc.description.upvformatpinicio 2347 es_ES
dc.description.upvformatpfin 2355 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 12 es_ES
dc.description.issue 11 es_ES
dc.identifier.pmid 29458446
dc.relation.pasarela S\355325 es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES


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