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Optimización de la nutrición proteica en conejos

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Optimización de la nutrición proteica en conejos

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dc.contributor.advisor Pascual Amorós, Juan José es_ES
dc.contributor.author Tomás Esteban, Alejandro es_ES
dc.date.accessioned 2017-02-02T10:44:10Z
dc.date.available 2017-02-02T10:44:10Z
dc.date.created 2016-09-28
dc.date.issued 2017-02-02 es_ES
dc.identifier.uri http://hdl.handle.net/10251/77527
dc.description.abstract [ES] Optimización del contenido en aminoácidos limitantes en dietas de engorde de conejos en función de su velocidad de crecimiento. es_ES
dc.description.abstract [EN] Nowadays, dietary protein level of fattening rabbits has been r educed to avoid frequent gastrointestinal problem s observed during this period and to minimize the environmental impact. This r eduction seems not be affecting commercial crossbred fattening rabbits, but those coming from lines highly selected for growth rate, seem to be not expressing all their genetic potential wit h under these conditions, widely affecting t he genetic rankings and consequen tly adequate genetic material diffusion. Theref ore, this thesis is an initia l attempt to determine the optimal levels of Lysine (Lys), sulphurous amino acid (Meth ionine and Cysteine) and Threonine (Thr) in function of growth rate of rab bits, through a matrix of 27 feeds and, using the Plasmatic Ureic Nitrogen (PUN ) level as a indicator of dietary amino acids imbalance. The study enrolled 432 rabbits, belonging to the R and V lines of Polytechnic University of Val encia, selected by growth rate and litter size, respectively. Each experimental fe ed was randomly assigned to each cage group of 8 rabbits, composed by animals f rom both genetic types, for a total of 27 cages per batch and two batches. The a verage daily gain (ADG) was significantly higher f or the R-line, and similarly, a verage PUN level on R line (16.43±0.19 mg/ dL; P<0.001) was greater that observed fo r the V-line (14.56±0.38 mg/dL; P<0.001). A po ssible explanation could be re lated to a greater amino acid imbalance on hi gh growth rate animals. As re gards differences on PUN level in function of dietary levels of Lys, sulphurous amino acid and Thr, average PUN reached the lowest levels for the med ium level of dietary Lys (7.3 g Lys/kg DM), as well as for the medium level of dietary sulphur amino acids (5.2 g Met/kg DM), as suggested by the literature. However, average PUN was reached the lowest level s only with the lowest dietary Thr level evaluated (5.3 g Thr/kg DM), per haps suggesting that current Th r recommendations (6.2 g Thr/kg DM) are over-estimated. These fin dings represent preliminary results; f urther research will build on t his thesis to calculate the requirements of essential am ino acid based on ADG (with 4 a dditional batches).
dc.language Español es_ES
dc.publisher Universitat Politècnica de València es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Conejos es_ES
dc.subject Aminoácidos es_ES
dc.subject Índice de conversión es_ES
dc.subject Nitrógeno uréico en plasma es_ES
dc.subject Growing rabbits
dc.subject Requirements
dc.subject Aminoacid
dc.subject Plasmatic ureic nitrogen
dc.subject Growth rate
dc.subject.classification PRODUCCION ANIMAL es_ES
dc.subject.classification NUTRICION Y BROMATOLOGIA es_ES
dc.subject.other Máster Universitario en Producción Animal-Màster Universitari en Producció Animal es_ES
dc.title Optimización de la nutrición proteica en conejos es_ES
dc.type Tesis de máster 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 Tomás Esteban, A. (2016). Optimización de la nutrición proteica en conejos. http://hdl.handle.net/10251/77527 es_ES
dc.description.accrualMethod TFGM es_ES
dc.relation.pasarela TFGM\41300 es_ES


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