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dc.contributor.author | Marín-García, P.J | es_ES |
dc.contributor.author | Ródenas Martínez, Luis | es_ES |
dc.contributor.author | Martinez-Paredes, Eugenio | es_ES |
dc.contributor.author | Cambra López, María | es_ES |
dc.contributor.author | Blas Ferrer, Enrique | es_ES |
dc.contributor.author | Pascual Amorós, Juan José | es_ES |
dc.date.accessioned | 2021-04-17T03:33:05Z | |
dc.date.available | 2021-04-17T03:33:05Z | |
dc.date.issued | 2020-06 | es_ES |
dc.identifier.issn | 0377-8401 | es_ES |
dc.identifier.uri | http://hdl.handle.net/10251/165291 | |
dc.description.abstract | [EN] Genetic selection for feed efficiency has increased the growth rate and requirements of growing rabbits, while the protein content of commercial feeds has been adjusted to avoid digestive disorders. The aim of this work was to evaluate how a diet with moderate levels of protein content [146 g crude protein (CP)/kg] could be affecting protein and amino acids acquisition depending on the growth rate of the animals. From 189 weaned rabbits (28 days old), only 41 animals were selected at 42 days, in order to ensure the greatest variability for growth rate during fattening. To achieve this goal, animals came from three genetic lines: H and LP (maternal lines selected by litter size) and R (paternal line selected for growth rate), characterised by normal, moderate and high growth rate during the fattening period, respectively. Apparent faecal digestibility of dry matter (DM), CP and gross energy (GE) of the diet from 49-53 days of age, as well as the ileal apparent digestibility of DM, CP and amino acids at 63 days of age, was determined in all the selected animals. Protein, energy and amino acids retained in the empty body during the fattening period were also determined by slaughtering 15 weaning rabbits at 28 days, and the 41 selected animals at 63 days of age. Animals from the R line showed higher feed intake than those from maternal lines, as well as lower feed conversion ratio, even below that expected from their growth rate. Apparent faecal digestibility of GE and apparent ileal digestibility of DM, CP and cystine of the diet were higher in LP than in H rabbits (P < 0.05), showing intermediate values in R rabbits. However, apparent ileal digestibility of glutamic acid and glycine was significantly higher in R than in H rabbits (P < 0.05), showing intermediate values in LP rabbits. As expected, both daily protein and energy retained in the empty body increased as growth increased. However, R growing rabbits seem to have lower protein retained and higher energy retained in the empty body than that expected from their growth. In fact, protein to energy retained ratio was clearly lower for R growing rabbits. These results seem to show the possible existence of some limiting amino acid when current moderate protein diets are used in growing rabbits with high growth rates, recommending a review of the amino acid requirements for the growing rabbits from paternal lines. | es_ES |
dc.description.sponsorship | This study was supported by the Interministerial Commission for Science and Technology (CICYT) from the Spanish Government (AGL2017-85162-C2-1-R). The grant for Pablo Marin from the Ministry of Education, Culture and Sports (FPU-2014-01203) is also gratefully acknowledged. | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation.ispartof | Animal Feed Science and Technology | es_ES |
dc.rights | Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) | es_ES |
dc.subject | Rabbit | es_ES |
dc.subject | Growth rate | es_ES |
dc.subject | Protein | es_ES |
dc.subject | Amino acids | es_ES |
dc.subject | Retention and digestibility | es_ES |
dc.subject.classification | PRODUCCION ANIMAL | es_ES |
dc.subject.classification | NUTRICION Y BROMATOLOGIA | es_ES |
dc.title | A moderate protein diet does not cover the requirements of growing rabbits with high growth rate | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.1016/j.anifeedsci.2020.114495 | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/MECD//FPU2014-01203/ES/FPU2014-01203/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2017-85162-C2-1-R/ES/MEJORA GENETICA DEL CONEJO DE CARNE: ESTRATEGIAS PARA INCREMENTAR LA EFICACIA DE LA MEJORA, REPRODUCCION Y SALUD DE LINEAS PATERNALES/ | 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 | Marín-García, P.; Ródenas Martínez, L.; Martinez-Paredes, E.; Cambra López, M.; Blas Ferrer, E.; Pascual Amorós, JJ. (2020). A moderate protein diet does not cover the requirements of growing rabbits with high growth rate. Animal Feed Science and Technology. 264:1-11. https://doi.org/10.1016/j.anifeedsci.2020.114495 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | https://doi.org/10.1016/j.anifeedsci.2020.114495 | es_ES |
dc.description.upvformatpinicio | 1 | es_ES |
dc.description.upvformatpfin | 11 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 264 | es_ES |
dc.relation.pasarela | S\414261 | es_ES |
dc.contributor.funder | Agencia Estatal de Investigación | es_ES |
dc.contributor.funder | Ministerio de Educación, Cultura y Deporte | es_ES |
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dc.subject.ods | 12.- Garantizar las pautas de consumo y de producción sostenibles | es_ES |