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Partial replacement of starch with acid detergent fibre and/or neutral detergent soluble fibre at two protein levels: Effects on ileal apparent digestibility and caecal environment of growing rabbits

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Partial replacement of starch with acid detergent fibre and/or neutral detergent soluble fibre at two protein levels: Effects on ileal apparent digestibility and caecal environment of growing rabbits

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dc.contributor.author Martínez Vallespín, Beatriz es_ES
dc.contributor.author Martinez-Paredes, Eugenio es_ES
dc.contributor.author Ródenas Martínez, Luis es_ES
dc.contributor.author Moya, V.J. es_ES
dc.contributor.author Cervera Fras, Mª Concepción es_ES
dc.contributor.author Pascual Amorós, Juan José es_ES
dc.contributor.author Blas Ferrer, Enrique es_ES
dc.date.accessioned 2016-06-27T12:44:35Z
dc.date.available 2016-06-27T12:44:35Z
dc.date.issued 2013-06
dc.identifier.issn 1871-1413
dc.identifier.uri http://hdl.handle.net/10251/66547
dc.description.abstract [EN] The effects of the composition of pen-weaning diets on apparent ileal digestibility of nutrients and caecal environment were studied in growing rabbits. Eight diets were formulated according to a 2 x 2 x 2 factorial design to increase acid detergent fibre (ADF) from 230 to 290 g kg(-1) dry matter (DM) at the expense of mainly starch, to increase neutral detergent soluble fibre (NDSF) from 145 to 185 g kg(-1) DM at the expense of mainly starch, and to reduce crude protein (CP) content from 175 to 145 g kg(-1) DM. A total of 32 litters of eight kits were randomly assigned to the diets at 17 days of age, weaned at 28 days of age and slaughtered at 35 days of age to collect samples of ileal and caecal contents. The substitution of ADF for starch reduced the coefficient of apparent ileal digestibility (CAID) of DM (0.292 vs. 0.229; P <0.01). The substitution of NDSF for starch increased the CAID of NDSF (-0.040 vs. 0.099; P < 0.01). An interaction between dietary ADF and NDSF levels was found for the CAID of CP, higher in the low ADF-low NDSF diets than in the rest (+0.074; P <0.05). The reduction of dietary CP content decreased the CAID of CP (0.578 vs. 0.525; P < 0.05) and NDSF (0.086 vs. -0.038; P <0.01). Interactions between dietary ADF and NDSF levels were found affecting full caecum weight as well as DM content and pH of caecal digesta. The increase of ADF in the high NDSF diets reduced full caecum weight (-9.1 g kg(-1) live weight; P < 0.01), increased DM content of caecal digesta (+31 g kg(-1); P <0.001) and reduced caecal pH (- 0.10; P < 0.05). In the low NDSF diets, higher ADF increased DM content of caecal digesta to a lesser extent (+16 g kg(-1); P < 0.001) and increased caecal pH (+0.08; P <0.05). The increase of NDSF in the high ADF diets increased full caecum weight (+8.5 g kg(-1) live weight; P <0.01) and reduced caecal pH (-0.14; P <0.001). In the low ADF diets, higher NDSF increased full caecum weight more extensively (+15.5 g kg(-1) live weight; P < 0.001) and reduced DM content of caecal digesta (-16 g kg(-1); P <0.001). Both ADF and NDSF replacing starch increased total volatile fatty acid (VFA) concentration of caecal digesta (+11.5% and +13.9%, respectively; P < 0.01). The replacement with NDSF increased molar proportion of butyrate (0.095 vs. 0.112; P <0.001) at the expense of mainly acetate (0.841 vs. 0.820; P <0.001) and reduced ammonia concentration of caecal digesta (-8.1%; P < 0.05). The reduction of dietary CP content decreased total VFA (-14.4%; P < 0.001) and ammonia (-23.5%; P < 0.001) concentrations of caecal digesta and increased caecal pH (5.87 vs. 5.93; P <0.05). Overall, the three dietary changes under study led to changes in the caecal environment which might be effective in reducing mortality rate in a context of rabbit epizootic enteropathy. (C) 2013 Elsevier B.V. All rights reserved. es_ES
dc.description.sponsorship Financial support was provided by the Ministerio de Educacion y Ciencia of Spain (Proyecto AGL2006-07596). Authors thank J. Garcia from the Universidad Politecnica de Madrid (Spain) for the analyses of ytterbium. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation Ministerio de Educacion y Ciencia of Spain AGL2006-07596 es_ES
dc.relation.ispartof Livestock Science es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Growing rabbit es_ES
dc.subject Apparent ileal digestibility es_ES
dc.subject Caecal fermentation es_ES
dc.subject Fibre es_ES
dc.subject Starch es_ES
dc.subject Protein es_ES
dc.subject.classification PRODUCCION ANIMAL es_ES
dc.subject.classification NUTRICION Y BROMATOLOGIA es_ES
dc.title Partial replacement of starch with acid detergent fibre and/or neutral detergent soluble fibre at two protein levels: Effects on ileal apparent digestibility and caecal environment of growing rabbits es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.livsci.2013.02.012
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 Martínez Vallespín, B.; Martinez-Paredes, E.; Ródenas Martínez, L.; Moya, V.; Cervera Fras, MC.; Pascual Amorós, JJ.; Blas Ferrer, E. (2013). Partial replacement of starch with acid detergent fibre and/or neutral detergent soluble fibre at two protein levels: Effects on ileal apparent digestibility and caecal environment of growing rabbits. Livestock Science. 154(1-3):123-130. doi:10.1016/j.livsci.2013.02.012 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion https://dx.doi.org/10.1016/j.livsci.2013.02.012 es_ES
dc.description.upvformatpinicio 123 es_ES
dc.description.upvformatpfin 130 es_ES
dc.type.version info:eu repo/semantics/publishedVersion es_ES
dc.description.volume 154 es_ES
dc.description.issue 1-3 es_ES
dc.relation.senia 261230 es_ES


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