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Dissertations / Theses on the topic 'Fibre digestion'

Author: Grafiati

Published: 27 June 2021

Last updated: 29 July 2025

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1

Stebbens, Helen Rose. "The digestion and utilisation of food fibre by growing pigs." Thesis, University of Edinburgh, 1988. http://hdl.handle.net/1842/27458.

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A series of investigations were undertaken to provide information for compounders to consider when including fibrous foods in diets for growing pigs. The work involved measurements of nutrient digestibilities, growth trials and calorimetric studies. The digestibility of the neutral detergent fibre (NDF) fraction of a food was dependent on a number of factors including the source of fibre, the adaptation period and liveweight of the pig, and the protein and lipid contents of the diet. The level of addition of food fibre was not important in determining the digestibility of the NDF component of

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2

Key, Fiona Brigit. "Digestion and large intestinal fermentation of breads and haricot beans (Phaseolus vulgaris)." Thesis, University of Newcastle Upon Tyne, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308980.

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3

Useni, Bilungi Alain. "Effect of exogenous fibrolytic enzymes on fibre and protein digestion in ruminant animals." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6744.

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Thesis (MScAgric (Animal Sciences))--University of Stellenbosch, 2011.<br>Includes bibliography.<br>ENGLISH ABSTRACT: Forages are the main feed components in ruminant production systems for the reason that they are often the major source of energy available to the animal. However, only 10 to 35% of energy intake is available as net energy because the digestion of plant cell walls is not complete. This can significantly affect livestock performance and profits in production systems that use forages as a major source of nutrients of the diet. As a result of low and variable nutritive values

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4

Anelich, Claudia Bruna. "Association between grinding energy and in-vitro neutral detergent fibre digestion kinetics in forages." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/63233.

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Through the measurement of grinding energy, the possibility exists to predict forage fragility as related to the chemical composition of forages. It is also possible to predict a potential relationship between forage fragility and 240 hour in vitro neutral detergent fibre digestibility (uNDF240). These results could lead to improved predictions of particle size reduction, animal chewing activity and energy usage during the process of chewing. Physically effective fibre (peNDF) is a key component of many nutritional models used to predict the effect of forage particle size on cow chewing

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5

Colombatto, Dario. "Use of enzymes to improve fibre utilisation in ruminants : a biochemical and in vitro rumen degradation assessment." Thesis, University of Reading, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340076.

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6

Rallis, Ilias. "Intelligent chromatic fibre optic sensors and monitoring systems for enhancing useful by-products from anaerobic digestion." Thesis, University of Liverpool, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417968.

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7

Chikunya, Sifelani. "Microbial protein synthesis and fibre digestion in the rumen in relation to the form of supplementary nitrogen." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624398.

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8

Dickner-Ouellet, Laurie. "Optimisation de l'usage des coproduits dans l'alimentation des porcs en croissance : impact du type de fibre et de la xylanase sur la digestion des nutriments." Master's thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/29576.

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L’augmentation du coût des ingrédients de base des aliments pour porcs a permis à certains ingrédients alternatifs de se tailler une place sur les marchés nord-américains de l’alimentation animale. En effet, leur utilisation judicieuse en production porcine peut représenter un atout économique important. Toutefois, l’usage d’ingrédients alternatifs est limité dans les aliments pour porcs, notamment à cause leur effet parfois négatif sur la qualité de la carcasse ainsi que de leur teneur élevée en fibres alimentaires, peu valorisées par les monogastriques. Ce projet avait comme objectif de mieu

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9

Selvin, David. "Regulation of Myoplasmic Ca2+ During Fatigue in KATP Channel Deficient FDB Muscle Fibres." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/26174.

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It is known that muscles that lack KATP channel activity generate much greater unstimulated [Ca2+]i and force than normal muscles during fatigue. The increase in unstimulated force in KATP channel deficient muscles is abolished by a partial inhibition of L-type Ca2+ channels, suggesting that it is due to a Ca2+ influx through L-type Ca2+ channels and a subsequent increased myoplasmic Ca2+. However, there is also evidence that the increase in resting force is abolished by NAC, a ROS scavenger. The objective of this study was to reconcile these observations by studying the hypothesis that “the i

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10

Wilfart, Aurélie. "Digestion et transit digestif chez le porc en croissance : influence de la composition de l’aliment." Rennes, Agrocampus, 2007. http://www.theses.fr/2007NSARB178.

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La mise a point de modèles de digestion nécessite de caractériser le transit et la digestibilité des nutriments dans les différents segments digestifs ces paramètres dépendent de l’animal et de la composition de l’aliment. Le premier objectif du travail de thèse était d’évaluer les conséquences d’une modification de la composition de l’aliment sur la digestibilité des nutriments et le transit dans les segments digestifs. Le deuxième était de quantifier les cinétiques d’hydrolyses des matières premières dans ces mêmes organes. Le temps de séjour moyen des digesta était de 1 heure dans l’estomac

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11

Borel, Patrick. "Effets du son et du germe de ble sur l'activite in vitro de la lipase pancreatique, et sur la digestion et le metabolisme des lipides chez le rat." Aix-Marseille 2, 1987. http://www.theses.fr/1987AIX22078.

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12

Bournazel, Marion. "Effet des coproduits riches en fibres alimentaires sur l'utilisation disgestive et métabolique des minéraux chez le porc et le poulet." Thesis, Tours, 2017. http://www.theses.fr/2017TOUR4047.

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L’optimisation de l’utilisation de phosphore reste un enjeu majeur pour assurer la durabilité de nos filières avicoles et porcines. Aujourd’hui, l’utilisation de coproduits, relativement riches en fibres alimentaires, est grandissante. Or, les fibres alimentaires sont reconnues pour moduler les processus de digestion et la digestibilité des nutriments. Ce travail de thèse a permis de progresser sur les mécanismes digestifs engendrés par l’apport de coproduits riches en fibres alimentaires et leurs effets sur la digestion des minéraux, en lien avec la phytase microbienne, spécifiquement chez le

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13

Souza, Nedilse Helena de. "Efeitos de níveis crescentes de fibra em detergente neutro na dieta sobre a fermentação e digestão ruminal em bubalinos e bovinos." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-25062002-203038/.

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Quatro bubalinos e quatro bovinos adultos com fístulas ruminais foram utilizados com o objetivo de se estudar os efeitos de diferentes níveis de fibra em detergente neutro na dieta sobre as características de fermentação e digestão ruminal. Foram avaliadas os seguintes parâmetros: degradabilidades da matéria seca, proteína bruta, fibra em detergente neutro do feno de Coast-cross e do farelo de trigo; matéria seca e, proteína bruta do milho em grãos moídos e do farelo de soja; digestibilidade com marcador (Cr2O3); concentração de amônia, produção de ácidos graxos voláteis (acético, propiônico e

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14

Cherbut, Christine. "Fibres alimentaires et motricité digestive." Toulouse, INPT, 1985. http://www.theses.fr/1985INPT011A.

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Etude des proprietes physicochimiques des fibres (leur texture fibreuse, leur pouvoir de retention d'eau et leur fermentescibilite) et determination du role de ces proprietes sur la motricite digestive chez le porc et le chien

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15

Mohamed, Ahmed ben. "Impact des fibres alimentaires et des acides gras à chaîne courte sur le dialogue tube digestif, foie et tissus périphériques, dans le cadre d'une surnutrition." Thesis, Université Clermont Auvergne‎ (2017-2020), 2018. http://www.theses.fr/2018CLFAS026.

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Une des causes de l’augmentation de la prévalence de l’obésité et des maladies chroniques au niveau mondial (notamment dans les pays occidentaux) est la consommation de régimes hypercaloriques. A l’inverse la consommation d’un régime riche en fibres alimentaires est favorable à une bonne santé. Or la consommation de fibres alimentaires dans les pays occidentaux (20 g/j en France) est inférieure aux recommandations alimentaires préconisées par les organismes de santé (30 g/j). Un des moyens possibles d’augmenter l’ingestion des fibres est la mise à disposition d’aliments enrichis en fibres, et

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16

Allman, Andrea Lauren. "Fiber digestion in the juvenile blue crab, (Callinectes sapidus) rathbun." College Park, Md.: University of Maryland, 2006. http://hdl.handle.net/1903/3358.

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Thesis (M.S.) -- University of Maryland, College Park, 2006.<br>Thesis research directed by: Marine, Estuarine, Environmental Sciences Graduate Program. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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17

Gomes, Jacinta Diva Ferrugem [UNESP]. "Efeitos do incremento da fibra em detergente neutro, sobre parâmetros de desempenho, de digestibilidade dos componentes dietéticos e da morfologia intestinal de marrãs." Universidade Estadual Paulista (UNESP), 1996. http://hdl.handle.net/11449/104148.

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Made available in DSpace on 2014-06-11T19:32:59Z (GMT). No. of bitstreams: 0 Previous issue date: 1996-02-08Bitstream added on 2014-06-13T19:26:25Z : No. of bitstreams: 1 gomes_jdf_dr_botfmvz.pdf: 534381 bytes, checksum: ae99b49a5e8b0ffe9bc4f1a31533cea1 (MD5)<br>Embora os suínos apresentem limitada capacidade em degradar material fibroso, é possível utilizar fontes fibrosas na ração de determinadas categorias animais, como por exemplo suínas em fases pré-púbere e púbere, devido à necessidade de moderado ganho de peso neste período. Por ocasião do primeiro cio útil (terceiro cio fisiológico),

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18

Vienney, Martine. "Etude d'un procede de retention de biomasse pour le fonctionnement de reacteurs biologiques a l'alimentation continue : son application au traitement anaerobie des effluents industriels." Poitiers, 1988. http://www.theses.fr/1988POIT2339.

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19

Yang, Tzu-Hsuan. "Effects of diet on phosphorus digestion in dairy cattle." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/34581.

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Two studies were conducted to evaluate the effects of diet on phosphorus (P) digestion in dairy cattle. The objective of the first study was to evaluate the effects of forage and non-fiber carbohydrate (NFC) content on total P (TP) and inositol phosphates-P (IPs-P) digestion. Samples of feed, duodenal digesta and feces from a previously conducted study were analyzed for TP and IPs-P. In this study, eight lactating Holstein cows were fed diets containing either 60 or 35% forage and either 30 or 40% NFC in a 2 × 2 factorial with replicated 4 × 4 Latin square design. Dietary TP content

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20

Piwonka, Edward Joseph. "Associative effects of non-structural carbohydrates on fiber digestion by Ruminal microorganisms /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487859879940817.

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21

Lima, Ana Cristina Silva de. "AvaliaÃÃo da bioacessibilidade de cobre, ferro, zinco e atividade antioxidante total de suco integral e fibra de caju." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=10796.

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CoordenaÃÃo de AperfeiÃoamento de NÃvel Superior<br>O caju possui componentes que lhe conferem o tÃtulo de alimento funcional, sendo assim considerado, por se subentender que este atende as necessidades nutricionais e possui funÃÃo agregada Ã saÃde pela riqueza em fibras, minerais, vitaminas, compostos fenÃlicos e aÃÃo antioxidante. Em termos de nutriÃÃo nÃo Ã suficiente determinar apenas o conteÃdo total de nutrientes de determinado alimento, mas tambÃm conhecer a bioacessibilidade, ou seja, a quantidade absorvida e utilizada pelo organismo. Nesse contexto o objetivo desse trabalho foi determ

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22

Gomes, Jacinta Diva Ferrugem. "Efeitos do incremento da fibra em detergente neutro, sobre parâmetros de desempenho, de digestibilidade dos componentes dietéticos e da morfologia intestinal de marrãs /." Botucatu : [s.n.], 1996. http://hdl.handle.net/11449/104148.

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Orientador: Aleksandrs Spers<br>Banca: Dirlei Antonio Berto<br>Banca: Rodolfo Nascimento Kronka<br>Banca: Romualdo Shigueo Fukushima<br>Resumo: Embora os suínos apresentem limitada capacidade em degradar material fibroso, é possível utilizar fontes fibrosas na ração de determinadas categorias animais, como por exemplo suínas em fases pré-púbere e púbere, devido à necessidade de moderado ganho de peso neste período. Por ocasião do primeiro cio útil (terceiro cio fisiológico), as fêmeas devem apresentar valores mínimos de 110 kg de peso corporal e 1,8-2,0 cm de espessura de toucinho. O objetivo

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23

Goulart, Rodrigo Silva. "Avaliação da fibra fisicamente efetiva em rações para bovinos de corte." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/11/11139/tde-11022011-154913/.

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Objetivou-se com este trabalho avaliar o efeito de fontes e teor de fibra no consumo voluntário, no comportamento ingestivo, na efetividade de fontes de fibra, na cinética digestiva e alguns aspectos do metabolismo ruminal de bovinos de corte. Foram utilizados seis bovinos machos castrados da raça Nelore contendo cânula no saco dorsal do rúmen, alojados em gaiolas metabólicas, em delineamento do tipo quadrado latino 6x6, contendo 19 dias de período experimental cada. Seis rações foram formuladas com diferentes teores e fontes de fibra: CN (controle negativo com 10% da fração FDN de silagem de

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24

Yapi, Yapo Magloire. "Physiologie digestive de l'aulacode (Thryonomys swinderianus) en croissance et impact des teneurs en fibres et céréales de la ration sur la santé et les performances zootechniques." Thesis, Toulouse, INPT, 2013. http://www.theses.fr/2013INPT0019/document.

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L’aulacode (Thryonomys swinderianus) est un rongeur herbivore récemment domestiqué en Afrique pour la production de viande. Quelques études antérieures ont portés sur l’alimentation de cet animal, dans le but d’améliorer la productivité des élevages. A ce jour, nos connaissances sur la digestion et les besoins nutritionnels de cet animal sont encore très parcellaires. Le premier objectif de notre étude était d’améliorer nos connaissances sur la physiologie digestive de l’aulacode en croissance, en particulier en relation avec les apports de fibres alimentaires, avec pour finalité de proposer d

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Wrangbert, Marcus. "Counteracting Ammonia Inhibition in Anaerobic Digestion using Wood Residues : Evaluating Ammonium Adsorption Capacity of Fibres from Pulp and Paper Mills." Thesis, Linköpings universitet, Tema Miljöförändring, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-177891.

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One of the main interests in commercial methane production is to maximize the gas yield, and it is thus appealing to use material with relative high methane potential. However, such material often results in process instability whereas ammonia inhibition is common. Removal of ammonia through adsorption is a fairly unexplored method in the field of biogas production, and could prove to be cost-effective.The adsorption capacity of pulp fibres from the paper making industry were investigated through batch adsorption experiments. Additionally, the fibres effect on small scale batch digesters in te

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Wang, Pan. "Transcriptomic and metatranscriptomic approaches to characterizing genes coding for fiber digestion within the rumen ecosystem." Thesis, Lethbridge, Alta. : University of Lethbridge, Dept. of Biological Sciences, 2013. http://hdl.handle.net/10133/3459.

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The rumen microbiome constitutes a unique genetic resource of plant fiber degrading microbial enzymes that could be used for agricultural and industrial purposes. Anaeromyces mucronatus is a poorly characterized anaerobic lignocellulolytic fungus in the rumen. This thesis aimed at better understanding A. mucronatus YE505 and the particle associated rumen microbiota based on transcriptomic and metatranscriptomic approaches. High quality RNA was isolated from the fiber-associated rumen sample based on an improved RNA extraction method. A transcriptomic study was performed to investigate the expr

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Lavoie, Judith. "Étude du comportement rhéologique en digestion in vitro de systèmes modèles laitiers enrichis en fibres." Master's thesis, Université Laval, 2013. http://hdl.handle.net/20.500.11794/25170.

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Ce projet visait à mesurer l’effet de l’enrichissement en polysaccharides d’une matrice laitière sur son comportement rhéologique en digestion in vitro. Le comportement rhéologique de solutions de protéines laitières (3,9%), de gomme xanthane (0,7%), de gomme de caroube (0,7%) et de leurs mélanges, acidifiés par HCl sous agitation, a été suivi durant une digestion in vitro. Le comportement de solutions de poudre de lait écrémé (3,5 et 4% de protéines) enrichies des mêmes polysaccharides (0,7%) et fermentées a aussi été suivi en digestion in vitro. Le mode d’acidification affectait le comportem

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28

Holtshausen, Lucia. "Effect of nonfiber carbohydrates on product yield and fiber digestion in fermentations with mixed ruminal microbes." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0008120.

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29

Migwi, Perminus K. "Improving the nutritive value of low quality roughage for ruminants by ensiling with citrus pulp and poultry litter." Title page, contents and summary only, 1997. http://web4.library.adelaide.edu.au/theses/09AS/09asm636.pdf.

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Bibliography: leaves 107-130. This study evaluates quality of fermentation of the silage and also its nutritive value to ruminants on the basis of "in vitro" and "in sacco" digestability. Animal response to the silage is also evaluated in an "in vivo" digestability and nitrogen balance trial with Australian Merino sheep. The objective of this thesis is to investigate the opportunities for utilising citrus pulp and poultry litter to improve the nutritive value of wheat straw.

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Comtet-Marre, Sophie. "Evolution structurale et fonctionnelle des communautés microbiennes digestives sous l'influence de facteurs biotiques et abiotiques. Développement d'une biopuce ADN ciblant les gènes impliqués dans la dégradation des glucides complexes alimentaires." Thesis, Clermont-Ferrand 2, 2014. http://www.theses.fr/2014CLF22467/document.

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La dégradation des fibres alimentaires est une fonction essentielle des écosystèmes digestifs microbiens. Chez le ruminant, elle est assurée par des bactéries, champignons et protozoaires capables de produire de nombreuses enzymes nécessaires à l’hydrolyse des polysaccharides de paroi végétale. Parmi les facteurs susceptibles d’influencer l’efficacité de dégradation des fibres, qui est une composante importante de la productivité et de la santé animales, des additifs tels que des levures probiotiques apparaissent comme un levier intéressant. Afin d’approfondir les connaissances sur les facteur

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Elrgaiye, Ali Saad Ab. "Semi-quantitative Risk Assessment of an anaerobic digestion process." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016.

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Biogas is the most emerging industrial sector for energy production from renewable sources at National and European levels, and growing government funds favor the development of its market. From a process safety standpoint, Seveso Directive (Directive 2012/18/EU of the European Parliament and of the Council), but Biogas plants are complicated enough to require both their specific technology and an accurate risk assessment for design purposes. The number of accidents involving biogas plants has been too many to be ignored. Biogas plants are often operated wrongly, deficient in technological det

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Russouw, Tracy Karen Joe. "Molecular characterisation of the fibre-digesting bacteria isolated from the ostrich (Struthio Camelus var. Domesticus) hindgut." Master's thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/9740.

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Includes bibliographical references.<br>Eleven bacterial strains that have been isolated from the ostrich hindgut, have successfully been identified with the aid of PCR amplification of the 16S rDNA genes and sequence analysis using the BLASTN search of the GenBank database. The nucleotide sequences were determined either through direct sequencing of the PCR products or after cloning the products into the plasmid vector pBluescript (SK). The results obtained from the 16S rDNA sequence homologies strongly suggests that the newly identified bacteria should be assigned to three major bacterial ge

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Denis, Claire. "Caractérisation biochimique de l'algue Grateloupia turuturu, évaluation de ses potentialités de valorisation via un procédé de digestion enzymatique et la purification partielle d'un pigment d'intérêt (R-phycoétythrine)." Nantes, 2009. http://www.theses.fr/2009NANT2022.

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Grateloupia turuturu Yamada est une macroalgue rouge originaire du Japon qui prolifère sur les côtes bretonnes depuis une vingtaine d’années. L’étude de la composition biochimique et de ses variations saisonnières est réalisée afin d’évaluer les voies de valorisations potentielles de cette espèce. La meilleure période de collecte de cette algue pour une utilisation en alimentation humaine (ex : légumes de mer) se situe entre février et juin. La voie de valorisation biotechnologique explorée est la production R-phycoérythrine. Deux méthodes sont testées pour extraire ce pigment : l’hydrolyse en

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GOURGUE-JEANNOT, CLAUDINE. "Effets de fibres alimentaires issues de fruits tropicaux sur la digestion de l'amidon et le metabolisme des lipides." Nantes, 1993. http://www.theses.fr/1993NANT2060.

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L'objectif de ce travail consistait a: 1) approfondir l'un des mecanismes d'action des fibres sur le metabolisme glucidique, en determinant le mode d'intervention de pectines differemment chargees sur la digestion enzymatique de l'amidon; 2) obtenir a partir de sous-produits de fruits tropicaux de nouvelles sources de fibres alimentaires et optimiser par voie technologique leurs proprietes hypoglycemiantes; 3) verifier au cours d'une experimentation in vivo l'influence des fibres selectionnees sur les metabolismes glucidique et lipidique, en comparant leurs effets a ceux d'une fibre visqueuse

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Castells, Domingo Llorenç. "Effect of different fiber sources on the digestive function and development of calves." Doctoral thesis, Universitat Autònoma de Barcelona, 2013. http://hdl.handle.net/10803/117315.

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Per analitzar l'efecte de la inclusió de fonts de fibra en la dieta dels vedells abans del deslletament sobre el rendiment productiu, comportament, i el desenvolupament i funció del tracte gastrointestinal es van realitzar cinc estudis. En el primer dels estudi es va realitzar una sèrie de proves per tal de trobar les fonts de fibra que poguessin afavorir el creixement i desenvolupament dels vedells. Com a resultat d'aquest estudi, es va trobar que els vedells que rebien un farratge de gramínies, milloraven els paràmetres productius. Cal destacar la palla d'ordi, el fenc de civada i l'ensitjat

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Taghipoor, Masoomeh. "MODÉLISATION DU TRANSPORT, DE LA DÉGRADATION ET DE L'ABSORPTION DES ALIMENTS DANS L'INTESTIN GRÊLE." Phd thesis, Université François Rabelais - Tours, 2012. http://tel.archives-ouvertes.fr/tel-00762216.

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L'objectif de ce travail est de présenter un modèle générique de la digestion dans l'intestin grêle. Dans la première partie de ce travail, un modèle mécaniste basé sur les équations différentielles ordinaires est utilisé pour présenter la digestion : les équations décrivent l'évolution de la position et de la composition du bolus provenant de l'estomac. Chaque bolus est représenté par un cylindre. Ce modèle prend en compte simultanément les différents aspects de la digestion à savoir le transport du bolus dans la lumière intestinale, la dégradation des aliments par des enzymes, et l'absorptio

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Barcena-Gama, Jose Ricardo. "Effect of roughage source on ruminal kinetics of digestion and passage of individual feed components in mixed diets for steers." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184834.

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Total tract digestion coefficients for dry matter (DM) and neutral detergent fiber (NDF), passage rates for grain and roughage components of diets and liquid turnover were measured for 65 and 90% concentrate diets in separate 4 x 4 Latin square experiments using intact growing steers. Kinetics of in situ digestion for DM and NDF in diet ingredients, rumen pH, volume and DM distribution were determined in mature, rumen cannulated steers. Rates of passage and digestion were combined to calculate apparent extent of ruminal digestion (AERD) for diet ingredients. Diets were based on steam flaked mi

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AUFFRET, AGNES. "Caracteristiques des fibres de betterave et fermentation digestive in vitro : influence des traitements technologiques." Nantes, 1993. http://www.theses.fr/1993NANT2022.

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La fermentation colique des fibres alimentaires par la microflore de ce compartiment permet d'expliquer une grande partie des effets benefiques des fibres. Notre but a consiste a identifier les caracteristiques chimiques, physico-chimiques et physiques des fibres conditionnant leur fermentation colique. Les outils utilises ont ete: 1) des traitements chimiques et(ou) physiques destines a modifier les caracteristiques des fibres, 2) un systeme in vitro simple simulant la fermentation colique humaine. Le substrat selectionne, les fibres de betterave, constituait un modele classique de fibres ali

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MOORE, JEANNETTE AILEEN. "RATE OF PASSAGE, RATE OF DIGESTION, AND RUMEN ENVIRONMENTAL CHANGES AS INFLUENCED BY ROUGHAGE SOURCE IN 65 AND 90% CONCENTRATE DIETS FOR STEERS." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184246.

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Diets were based on steam-flaked milo and contained chopped alfalfa hay in the control diet. At the 65% concentrate level, cottonseed hulls or chopped wheat straw replaced half the alfalfa hay. At the 90% concentrate level, roughage sources were chopped alfalfa hay, cottonseed hulls, or wheat straw. Six growing steers and three mature, rumen-cannulated steers per concentrate level were used in separate Latin square experiments. Total tract digestion coefficients, particulate passage rates, liquid turnover rates, and rumination time were measured in the intact steers. In situ digestion, rumen p

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Cara, Louis. "Effets des produits céréaliers riches en fibres sur la digestion des lipides et le métabolisme des lipoprotéines plasmatiques chez le rat et chez l'homme." Aix-Marseille 3, 1991. http://www.theses.fr/1991AIX30014.

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Cette these a contribue tout d'abord a confirmer in vitro le pouvoir inhibiteur du germe de ble vis-a-vis de l'hydrolyse des lipides par la lipase pancreatique. Ensuite, il s'est agit d'evaluer chez le rat la dose minimale efficace de germe de ble necessaire pour l'obtention des effets metaboliques benefiques au niveau des lipides plasmatiques, lipoproteiques et hepatiques. Enfin, nous avons demontre chez l'homme sain les effets benefiques de certaines fractions cerealieres riches en fibres sur le metabolisme des lipides et des lipoproteines en periode postprandiale et montre les effets favora

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CLOUTOUR, FRANCOISE. "Caracteristiques des fibres alimentaires : influence sur leur fermentation in vitro par la flore digestive de l'homme." Nantes, 1995. http://www.theses.fr/1995NANT2010.

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Notre objectif etait de mieux comprendre le comportement fermentaire des fibres en regard de leurs caracteristiques structurales et physiques. Nous avons donc selectionne des fibres modeles, fibres de pois et de pomme dont les proprietes fermentaires semblaient dependre essentiellement de la cristallinite pour les coques de pois et de la porosite pour les fibres de pomme. Les moyens utilises ont ete 1) des traitements chimiques et/ou physiques destines a modifier ces caracteristiques 2) un systeme in vitro simulant la fermentation colique humaine. La cristallinite (indice et allomorphisme) de

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Jordan, Katherine Van. "Effect of sodium caseinate on hindgut fermentation and fiber digestion in the equine and Effect of Megasphaera elsdenii on broiler chick performance." Thesis, Kansas State University, 2017. http://hdl.handle.net/2097/38250.

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Master of Science<br>Department of Animal Sciences and Industry<br>James M. Lattimer<br>Eight cecally cannulated horses were used in a replicated, 4 x 4 Latin square design conducted in 4, 14-d periods to determine effects of sodium caseinate on equine hindgut fermentation and fiber digestion. Horses were maintained on an ad libitum diet of Smooth Bromegrass hay and treatments consisted of cecal infusions of water (CON), 0.125 g sodium caseinate/kg BW (LOW), 0.25 g sodium caseinate/kg BW (MED), and 0.50 g sodium caseinate/kg BW (HI). Cecal NH3 concentrations increased (P < 0.01) as casein incr

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Hart, Ashley Yeong. "Effects of resistant starch and soluble fiber on the bioaccessibility of dietary carotenoids from spinach and carrot using simulated in vitro digestion." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1332442523.

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Silva, Flavio Lopes da [UNESP]. "Emprego de fibra de cana-de-açúcar na alimentação de cães." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/89185.

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Made available in DSpace on 2014-06-11T19:23:45Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-02-25Bitstream added on 2014-06-13T20:51:02Z : No. of bitstreams: 1 silva_fl_me_jabo.pdf: 435848 bytes, checksum: de9018bb62cc16d528ef39f84fb30691 (MD5)<br>Proveniente do refinamento do bagaço de cana, a fibra de cana torna-se ingrediente potencial para cães. Nesta pesquisa avaliaram-se os aspectos nutricionais e funcionais da fibra de cana-de-açúcar (FC) em quatro alimentos extrusados para cães: Controle (CO) sem adição de fibra; adição 10% de FC (FC-10); adição de 20% de FC (FC-20); adiçã

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Silva, Flavio Lopes da. "Emprego de fibra de cana-de-açúcar na alimentação de cães /." Jaboticabal, 2013. http://hdl.handle.net/11449/89185.

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Orientador: Áulus Cavalieri Carciofi<br>Banca: Ananda Portella Félix<br>Banca: Ricardo Souza Vasconcellos<br>Resumo: Proveniente do refinamento do bagaço de cana, a fibra de cana torna-se ingrediente potencial para cães. Nesta pesquisa avaliaram-se os aspectos nutricionais e funcionais da fibra de cana-de-açúcar (FC) em quatro alimentos extrusados para cães: Controle (CO) sem adição de fibra; adição 10% de FC (FC-10); adição de 20% de FC (FC-20); adição de 10% de CEL (CEL-10). O experimento foi organizado em dois blocos de 12 cães, totalizando 6 cães por tratamento. Em cada bloco, nos dias 1-1

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Paredes, García Julio Alejandro. "Efecto del nivel de fibra detergente neutra sobre el consumo en alpacas (Vicugna pacos)." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2013. https://hdl.handle.net/20.500.12672/14185.

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Publicación a texto completo no autorizada por el autor<br>Evalúa el consumo de materia seca (CMS) y de fibra detergente neutra (CFDN) en función a los niveles de Fibra Detergente Neutro (FDN) en la dieta en alpaca; estima el consumo potencial de FDN a fin de predecir el CMS y de esta manera mejorar sus sistemas de crianza. Se utilizó el diseño experimental Cuadrado Latino 4x4. Los tratamientos fueron a base de heno de avena en diferentes proporciones de tallos y hojas y procesado por una picadora de 2 cm y separado por un tamiz de 0.4 cm. Los tratamientos fueron: Tratamiento 1 (T1, 58.24% de

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Faria, Elisa de Sousa. "Avaliação de níveis de fibra na dieta de novilhas leiteiras de diferentes grupos zootécnicos." Universidade Federal de Viçosa, 2000. http://www.locus.ufv.br/handle/123456789/10986.

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Submitted by Marco Antônio de Ramos Chagas (mchagas@ufv.br) on 2017-07-03T18:50:37Z No. of bitstreams: 1 texto completo.pdf: 355826 bytes, checksum: e18bdbc7f71fdecd659aa96d4939c542 (MD5)<br>Made available in DSpace on 2017-07-03T18:50:37Z (GMT). No. of bitstreams: 1 texto completo.pdf: 355826 bytes, checksum: e18bdbc7f71fdecd659aa96d4939c542 (MD5) Previous issue date: 2000-12-08<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>No presente trabalho foi avaliado o desempenho de novilhas leiteiras de três grupos zootécnicos (7/8HZ, 15/16HZ, HPC), quando submetidas a dietas

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Marcé, Clavillé Marta. "Estrategias adhesivas de los postes de fibra de vidrio." Doctoral thesis, Universitat Internacional de Catalunya, 2015. http://hdl.handle.net/10803/321361.

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La restauración de los dientes endodonciados ha sido un tema ampliamente estudiado en la literatura científica. A principios de los años 2000, época en que empezaban a despuntar los materiales adhesivos a base de resina, con buenos resultados clínicos, no había aún un consenso definido a la hora de restaurar los dientes endodonciados La aparición de nuevos diseños anatómicos, materiales de los postes intrarradiculares y los sistemas adhesivos actuales, han hecho que los protocolos de restauración de los dientes endodonciados, se hayan modificado, para ser más conservadores y sólo aquellos d

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Canora, Alice. "Studio del potenziale prebiotico degli alimenti con un modello intestinale in vitro e analisi multi-omiche." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22359/.

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In questo lavoro ci siamo concentrati sullo studio di un pane arricchito col 4% (p/p) di sansa sgrassata di oliva (DOP) prodotto nell’ambito del progetto europeo H2020 EcoProlive. La sansa di oliva sgrassata è un sottoprodotto derivante dalla produzione dell’olio di oliva ed è caratterizzata da un elevato contenuto di polifenoli, risulta interessante valutarne il potenziale prebiotico e l’impatto sul microbiota del colon umano. Per questo, i prodotti studiati sono stati sottoposti a digestione gastro duodenale e successivamente a fermentazione colonica distale nel modello intestinale in vitro

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Jacquier, Vincent. "Approches génomiques des interactions entre l’implantation du microbiote digestif chez le lapereau et la maturation du système immunitaire." Thesis, Toulouse, INPT, 2014. http://www.theses.fr/2014INPT0131/document.

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La santé digestive du lapin est difficile à maîtriser en élevage, notamment en période de sevrage où des troubles digestifs sont fréquents et peuvent entraîner des pertes importantes. Bien que l’utilisation d’antibiotiques diminue, afin d’éviter l’apparition de problèmes de résistance, des solutions alternatives doivent être trouvées. Nos principaux objectifs étaient : i) d’étudier l’influence de l’incorporation de fibres rapidement fermtentescibles (FRF) dans un aliment distribué précocement dès 15 jours d’âge, en comparaison d’un aliment avec antibiotiques (tiamuline et apramycine) utilisés

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