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Dissertations / Theses on the topic 'Proventriculus'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Puli, Oorvashi Roy G. "Defective proventriculus (Dve), a Novel Role in Dorsal-Ventral Patterning of the Drosophila Eye." University of Dayton / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1406732166.

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2

Praes, Patricia Lima. "Estudo radiográfico retrospectivo das alterações do proventrículo em psitacídeos." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/10/10137/tde-07012014-114713/.

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Este estudo retrospectivo revisa os achados radiográficos em exames simples e contrastados de 38 aves psittaciformes com alterações no proventrículo. Os dados foram obtidos do Serviço de Diagnóstico por imagem do departamento de cirurgia junto ao Hospital Veterinário da Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, durante o período de janeiro de 2004 a abril de 2012. A distribuição das alterações, assim como as suas respectivas espécies e idades, foram estudadas. O sexo das aves não foi considerado neste estudo. A espécie Amazona aestiva (papagaio-verdadeiro) alc

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3

Wali, Nabil Ali. "Studies on transmissible viral proventriculitis in chickens." Doctoral thesis, Universitat Autònoma de Barcelona, 2021. http://hdl.handle.net/10803/671982.

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La proventriculitis viral transmissible (TVP) és una malaltia infecciosa viral emergent que afecta principalment a les gallines de graella. Es caracteritza per una digestió de l’alimentació deficient, un creixement deficient i una taxa de conversió de l’alimentació deficient, causant pèrdues econòmiques a la indústria avícola. En casos de TVP s’observa l’ampliació, engrossiment, fragilitat i pal·lidesa del proventriculus, juntament amb debilitat i dilatació de l’istme gàstric. Tot i que les lesions greus proventriculars poden ser indicatives de TVP, no són específiques. La malaltia es caracter

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4

Weidhase, Michael, Patrick Beckers, Christoph Bleidorn, and M. Teresa Aguado. "On the role of the proventricle region in reproduction and regeneration in Typosyllis antoni (Annelida: Syllidae)." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-216141.

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Background: Syllids are a species rich annelid family possessing remarkable regenerative ability, which is not only the response after traumatic injury, but also a key step during the life cycle of several syllid taxa. In these animals the posterior part of the body becomes an epitoke and is later detached as a distinct unit named stolon. Such a sexual reproductive mode is named schizogamy or stolonization. The prostomium and the proventricle, a modified foregut structure, have been proposed to have a control function during this process, though the concrete mechanisms behind it have never bee

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5

Gogia, Neha. "Drosophila Eye Model to Study Dorso-Ventral (DV) Patterning and Neurodegenerative Disorders." University of Dayton / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1572279564626749.

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6

Romero, Arias Johanna. "Phylogeny, diversity and feeding ecology in the termite subfamily Apicotermitinae." Doctoral thesis, Universite Libre de Bruxelles, 2020. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/312782.

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Soils represent an essential habitat for a wide diversity of invertebrates. Among these organisms, termites are considered ecosystem engineers for their impact on nutrient cycling and soil functioning, stemming from their wide feeding habits. For instance, soil/litter-feeding termites are one of the groups that incorporate the most organic matter from the soil. Thus, the high abundance and diversity of this group of termites does not only indicate its ecological success, but also its high value for the ecosystem. TheApicotermitinae subfamily (family Termitidae) is a highly diverse group of soi

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7

PESARO, STEFANO. "Pathogenetical mechanism and development of a new diagnostic kit for the parrot proventricular dilatation disease." Doctoral thesis, Università degli Studi di Camerino, 2010. http://hdl.handle.net/11581/401857.

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PDD is a progressive disease often fatal, that occurs in several parrot species but a common susceptibility of all parrots is suspected. It also may occur in non psittacine bird like, gooses, hawks, doves tucans and flamingos. The ill birds develop gastrointestinal or central nervous system signs. These presentation can be occur like a combination of both or alone. The clinical signs are caused by histological nervous lesions, characterized by a non suppurative encephalomyelitis and/or perineural lymphoplasmacytic infiltrates around peripheral nerves. The intramural neural plexa of digestive t

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8

Ramada, Margarida Ramalhão Fortunato Leça. "Doença de dilatação do proventrículo : uma bornavirose." Bachelor's thesis, Universidade Técnica de Lisboa. Faculdade de Medicina Veterinária, 2009. http://hdl.handle.net/10400.5/1530.

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Dissertação de Mestrado Integrado em Medicina Veterinária<br>A Doença de Dilatação do Proventrículo (DDP) foi inicialmente descrita na década de 1970 nos Estados Unidos da América (EUA) e na Europa. Trata-se de uma doença fatal, que atinge mais de 50 espécies diferentes de aves domésticas e silvestres por todo o mundo. Esta doença é caracterizada por infiltrações linfo-plasmocíticas dos gânglios do sistema nervoso central e periférico, originando alterações neurológicas e/ou disfunções do aparelho digestivo. A epidemiologia desta doença, associada ao facto de um vírus desconhecido com en

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9

Tondela, Hernâni Alexandre Almeida. "A prática médico-veterinária de animais exóticos de companhia." Master's thesis, Universidade de Évora, 2018. http://hdl.handle.net/10174/22946.

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O relatório desenvolvido baseia-se nos quatro meses e meio do estágio curricular realizado no Centro Veterinário de Exóticos do Porto, em clínica e cirurgia de animais exóticos. Este, teve início a 12 de setembro de 2016 e terminou a 31 de Janeiro de 2017, tendo-se realizado sob a orientação do Professor Doutor Luís Miguel Lourenço Martins e do Dr. Joel Tsou Ferraz, diretor clínico do Centro. O presente relatório encontra-se essencialmente dividido em duas partes; na primeira são descritas as atividades acompanhadas pelo autor no Centro e relacionadas estatisticamente. Na segunda é realizada u

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10

GUINOTTE, FRANCOIS. "Efficacite biologique de diverses sources de carbonate de calcium chez la poule pondeuse et le poulet en croissance (gallus domesticus). Role de la secretion gastrique acide du proventricule dans la solubilisation et l'utilisation digestive de ces sources." Paris 7, 1992. http://www.theses.fr/1992PA077079.

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Les caracteristiques physico-chimiques de differentes sources de carbonate de calcium ont ete determinees puis leurs efficacites biologiques ont ete evaluees. Chez la poule pondeuse, l'apport de calcium sous la forme de particules grossieres ameliore la mineralisation oseuse et tend a favoriser la solidite de la coquille. Chez la poule reproductrice naine, le poids d'ufs, le poids du poussin d'un jour et sa mineralisation osseuse sont ameliores par l'incorporation de coquilles marines en morceaux. Chez le poulet de chair, l'emploi de carbonate de calcium broyee augmente le gain de poids, l'ind

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11

Blatt, Jasmina. "Haemolymph sugar homeostasis and the control of the proventriculus in the honeybee (Apis mellifera carnica L.)." Doctoral thesis, 2001. https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-880.

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The proventriculus regulates the food passage from crop to midgut. As the haemolymph provides a constantly updated indication of an insect’s nutritional state, it is assumed that the factor controlling the proventri-culus activity is to be found in the haemolymph. The purpose of this doctoral thesis was to investigate how output (metabolic rate), input (food quality and food quantity) and internal state variables (haemolymph osmolarity and haemolymph sugar titer) affect each other and which of these factors controls the activity of the proventriculus in the honeybee. Therefore free-flying fora

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12

Sheu, Suh Rong, and 許素容. "Studies on characteristics of enzymes extracted from chicken proventriculus duodenum pancreas and their effect on porcine fibers." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/47309515598643751160.

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碩士<br>國立中興大學<br>畜牧學系<br>86<br>The purpose of this study was to extract crude enzymes from chicken proventriculus, pancreas and duodenum to determine the activities of pepsin, trypsin and chymotrypsin. On the other hand, to investigate the effect of pH value, salt concentration and temperature on the activity of these enzymes. Finally, these crude enzymes were added into pork loin to study the changes of protein and histology of muscle and used as a reference for an tenderizer from animal in

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13

Xu, Su-Rong, and 許素容. "Studies on characteristics of enzymes extracted from chicken proventriculus, duodenum, pancreas and their effect on porcine fibers." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/80214307370813785023.

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14

Blatt, Jasmina [Verfasser]. "Haemolymph sugar homeostasis and the control of the proventriculus in the honeybee (Apis mellifera carnica L.) / vorgelegt von Jasmina Blatt." 2002. http://d-nb.info/965960579/34.

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15

Esteves, João Nuno Mendonça. "Doença da dilatação proventricular." Master's thesis, 2015. http://hdl.handle.net/10348/4552.

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Dissertação de Mestrado Integrado em Medicina Veterinária, Ciências Veterinárias<br>Descrita desde a década de 70, a Doença da Dilatação Proventricular ou PDD é uma doença infeciosa fatal, reportada em mais de 80 espécies de psitacídeos, bem como noutras aves não pertencentes à Ordem Psittaciformes. Já foi descrita na Europa, Estados Unidos da América, América do Sul, Austrália, Médio Oriente, África e Japão. Em 2008, foi identificado o agente etiológico desta doença, o bornavírus aviário, por dois estudos independentes. Desde então já foram relatados 7 genótipos relacionados com os psit

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16

Villanueva, Itamar D. "Selected Studies on Avian RNA Viruses." 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-8033.

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There are many pathogens that infect birds and perhaps many more that researchers have not yet identified. Of all potential pathogens, the research presented in this manuscript focuses on two avian RNA viruses. First, a serodiagnostic test for newly described Avian Borna Virus (ABV), which has been recently identified as the etiological agent of Proventricular Dilatation Disease (PDD), was developed. PDD is a deadly disease which affects many birds, but to this point, has mainly been a concern of psittacines. The need for a diagnostic test is imperative. An antigen associated with PDD was iden

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