Consulta: subjectFacets:"Microbiota"
Registros recuperados: 54
Data/hora: 06/06/2024 11:54:56

Producción de autoinductores y biopelículas microbianas y su relación con la calidad y composición química de jitomate (Lycopersicum esculentum Mill) cultivado en la región de Aquixtla, Puebla.
Provedor de dados: 32
Autores: Luna Guevara, María Lorena.
Aquixtla es una de las principales regiones productivas de jitomate en invernadero en el Estado de Puebla. Sin embargo, existen problemas técnicos y se requieren alternativas de comercialización en las cuales se contemplen la calidad e inocuidad del fruto. Con base a estos dos aspectos, el presente trabajo tuvo como objetivo evaluar las relaciones entre las condiciones ambientales y los sistemas de producción, sobre la composición química, parámetros de calidad, producción de autoinductores y formación de biopelículas microbianas sobre jitomate cultivado en invernadero. Se consideraron tres etapas para el desarrollo de la investigación, Etapa I: Identificación y selección de los sistemas de producción más importantes de jitomate en el Municipio de...
Palavras-chave: Lycopersicum esculentum Mill; Composición química; Fruto; Invernadero; Microbiota; Chemical composition; Fruit; Greenhouse; Microbiota; EDAR; Estrategías para el Desarrollo Agrícola Regional; Doctorado.
Ano: 2011
URL: http://hdl.handle.net/10521/625

Holobionts and their hologenomes: Evolution with mixed modes of inheritance
Provedor de dados: 74
Autores: Haag,Karen Luisa.
Abstract Symbioses are ubiquitous and have played an influential role in the evolution of life on Earth. Genomic studies are now revealing a huge diversity of associations among hosts and their microbiotas, allowing us to characterize their complex ecological and evolutionary dynamics. The different transmission modes and the asynchronous cell proliferation of the numerous symbionts associated with one host generate a genomic conflict ought to be solved. Two disputing views have been used to model and predict the outcome of such conflicts. The traditional view is based on community ecology, and considers that selection at the level of individuals is sufficient to explain longstanding associations among species. A new perspective considers that the host and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genomics; Metagenomics; Microbiota; Symbiosis; Holobiont.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000200189

The microbiome and inborn errors of metabolism: Why we should look carefully at their interplay?
Provedor de dados: 74
Autores: Colonetti,Karina; Roesch,Luiz Fernando; Schwartz,Ida Vanessa Doederlein.
Abstract Research into the influence of the microbiome on the human body has been shedding new light on diseases long known to be multifactorial, such as obesity, mood disorders, autism, and inflammatory bowel disease. Although inborn errors of metabolism (IEMs) are monogenic diseases, genotype alone is not enough to explain the wide phenotypic variability observed in patients with these conditions. Genetics and diet exert a strong influence on the microbiome, and diet is used (alone or as an adjuvant) in the treatment of many IEMs. This review will describe how the effects of the microbiome on the host can interfere with IEM phenotypes through interactions with organs such as the liver and brain, two of the structures most commonly affected by IEMs. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Inborn errors of metabolism; Microbiome; Microbiota; Diet; Treatment.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000400515

Caracterização epidemiológica dos indicadores de qualidade higiênico-sanitária do leite de rebanhos de três microrregiões do estado do Acre.
Provedor de dados: 14
Autores: DIAS, J. A.; CARVALHO, B. P.; MESQUITA, A. Q. de; LAMBERTUCCI, D. M.; CAVALCANTE, F. A.
Este estudo teve o objetivo de caracterizar indústrias lácteas e os indicadores de qualidade do leite de propriedades vinculadas às indústrias localizadas nas regiões do Alto Acre, Baixo Acre e Tarauacá-Envira, estado do Acre. Foram avaliadas amostras de leite de 92 rebanhos leiteiros para determinação da Contagem Total de Bactérias (CTB), convertidas em Contagem Padrão em Placas (CPP), e Contagem de Células Somáticas (CCS) realizadas pelo método de citometria de fluxo em equipamento automatizado. O questionário epidemiológico foi aplicado a 56 produtores a fim de obter informações do sistema de produção e manejo. Para a análise de dados foi utilizado o programa Epiinfo 7.2.2.6. As indústrias lácteas avaliadas captavam entre 750 e 11.500 litros/dia, e a...
Tipo: Folhetos
Palavras-chave: Microbiota; Alto Acre; Baixo Acre; Tarauacá-Envira; Epiinfo; Indústria láctea; Acre; Amazônia Ocidental; Western Amazon; Produção Leiteira; Leite; Qualidade; Milk production; Milk quality; Dairy industry.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1136166

Microrganismos deteriorantes do leite armazenado em tanques de resfriamento coletivo em Rondônia.
Provedor de dados: 14
Autores: DIAS, J. A.; OLIVEIRA, A. M. de; MACEDO, S. C. C.; FARIA, G. V.; CONSTANTINO, N. A. S.; SILVA, F. de A. C.
Considerando a predominância do uso de tanques de resfriamento coletivos no armazenamento do leite cru em Rondônia e a grande diversidade de microrganismos deletérios ao leite, o objetivo do trabalho foi avaliar a microbiota deteriorante do leite armazenado em 23 tanques coletivos da microrregião de Ji-Paraná e Cacoal. Para a contagem dos microrganismos utilizou-se semeadura em duplicata de 1 mL em placas de Petrifilm® AC aeróbios mesófilos e Petrifilm® EC coliformes totais de acordo com o fabricante. Para a contagem de psicrotróficos e termodúricos psicotróficos, as amostras foram semeadas em ágar padrão leite a 10%. Para a pesquisa de microrganismos termodúricos mesófilos e psicrotróficos, as amostras foram submetidas ao tratamento térmico (62,8 ± 0,5...
Tipo: Folhetos
Palavras-chave: Microbiota; Cooling tank; Leite; Qualidade; Armazenamento; Tanque; Resfriamento; Milk quality; Cold storage; Microorganisms.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1136312

Processamento de Leite Fermentado Probiótico com um Preparado de Albúmen Sólido de Coco Verde.
Provedor de dados: 14
Autores: CHAVES, A. C. S. D.; SANT’ANNA, F. E. B.; ANTUNES, L. A.; TORREZAN, R.
O coco verde é muito consumido no Brasil, sendo basicamente utilizado na produção da água de coco (albúmen líquido). A água de coco verde corresponde a aproximadamente 25% do peso do fruto in natura, ou seja, a industrialização resulta em uma grande quantidade de resíduo. O albúmen sólido do coco, em geral, é descartado junto com as cascas. Os leites fermentados podem ter adição de outras substâncias alimentícias, tais como sucos, pedaços, preparados ou polpas de frutas em uma concentração máxima de 30% em relação à massa final do produto. A adição de preparados de frutas conferem diferentes experiências sensoriais, agregando valor ao leite fermentado. A utilização do albúmen sólido de coco verde para elaboração um preparado para conferir aroma e sabor de...
Tipo: Folhetos
Palavras-chave: Albúmen de Coco Verde; Funcional; Microbiota; Resíduo; Polpa.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1138602

Caractérisation et quantification moléculaires de l’écosystème microbien d’altération du saumon cru et des crevettes cuites
Provedor de dados: 5
Autores: Mace, Sabrina.
Raw salmon and cooked shrimp sold in supermarket are usually found under vacuum or CO2 modified atmosphere packaging (MAP). This type of packaging inhibit growth of some bacteria, therefore, CO2 tolerant bacteria dominate spoilage microbiota of these products. The aim of this study is to improve knowledge about bacteria involved in spoilage. Spoilage microbial ecosystems of raw salmon and tropical cooked shrimp were described using classic miocrobiological and molecular methods like PCR-TTGE and pyrosequencing. Lactic acid bacteria, notably Lactococcus piscium, Carnobacterium maltaromaticum, Carnobacterium divergens, Lactobacillus sakei, and Gram negative bacteria like Photobacterium phosphoreum and Enterobacteriaceae (Serratia spp.) has been described as...
Tipo: Text
Palavras-chave: Produits de la mer; Microbiote; PCR-TTGE; Pyroséquençage; Potentiel d’altération; P. phosphoreum; PCR en temps-réel; Seafood products; Microbiota; PCR-TTGE; Pyrosequencing; Spoilage potential; P. phosphoreum; Real-time PCR.
Ano: 2013
URL: https://archimer.ifremer.fr/doc/00166/27773/25963.pdf

Deconjugated Bile Salts Produced by Extracellular Bile-Salt Hydrolase-Like Activities from the Probiotic Lactobacillus johnsonii La1 Inhibit Giardia duodenalis In vitro Growth
Provedor de dados: 5
Autores: Travers, Marie-agnes; Sow, Cisse; Zirah, Severine; Deregnaucourt, Christiane; Chaouch, Soraya; Queiroz, Rayner M. L.; Charneau, Sebastien; Allain, Thibault; Florent, Isabelle; Grellier, Philippe.
Giardiasis, currently considered a neglected disease, is caused by the intestinal protozoan parasite Giardia duodenalis and is widely spread in human as well as domestic and wild animals. The lack of appropriate medications and the spread of resistant parasite strains urgently call for the development of novel therapeutic strategies. Host microbiota or certain probiotic strains have the capacity to provide some protection against giardiasis. By combining biological and biochemical approaches, we have been able to decipher a molecular mechanism used by the probiotic strain Lactobacillus johnsonii La1 to prevent Giardia growth in vitro. We provide evidence that the supernatant of this strain contains active principle(s) not directly toxic to Giardia but able...
Tipo: Text
Palavras-chave: Giardiasis; Lactobacilli; Probiotics; Microbiota; Bile salts; Anti-giardial activity; Choloylglycine bile acid hydrolase.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00351/46211/45906.pdf

Thermal regime and host clade, rather than geography, drive Symbiodinium and bacterial assemblages in the scleractinian coral Pocillopora damicornis sensu lato
Provedor de dados: 5
Autores: Brener-raffalli, Kelly; Clerissi, Camille; Vidal-dupiol, Jeremie; Adjeroud, Mehdi; Bonhomme, Francois; Pratlong, Marine; Aurelle, Didier; Mitta, Guillaume; Toulza, Eve.
Background: Although the term holobiont has been popularized in corals with the advent of the hologenome theory of evolution, the underlying concepts are still a matter of debate. Indeed, the relative contribution of host and environment and especially thermal regime in shaping the microbial communities should be examined carefully to evaluate the potential role of symbionts for holobiont adaptation in the context of global changes. We used the sessile, long-lived, symbiotic and environmentally sensitive reef-building coral Pocillopora damicornis to address these issues. Results: We sampled Pocillopora damicornis colonies corresponding to two different mitochondrial lineages in different geographic areas displaying different thermal regimes: Djibouti,...
Tipo: Text
Palavras-chave: Coral holobiont; Microbiota; Bacterial communities; Symbiodinium assemblages; Thermal adaptation; Scleractinian corals; Coral reefs; Pocillopora damicornis.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00429/54076/55380.pdf

Influence de l'environnement trophique de l'élevage en biofloc sur les performances physiologiques de la crevette Litopenaeus stylirostris : Étude de paramètres de la nutrition, de l'immunité et de la reproduction
Provedor de dados: 5
Autores: Cardona, Emilie.
Biofloc is an intensive rearing system with zero or minimal water exchange where a diverse population of microorganisms (microalgae, zooplankton and bacteria) develops in association with organic matter to form the floc particles. These particles play the double role of biological filter and dietary supplement. This dissertation aims to better understand the process of this rearing system and its interactions with the Litopenaeus stylirostris shrimp. Two specific objectives were integrated within the framework of this general objective: (i) to measure the production gain from biofloc rearing and (ii) to study the interaction between biofloc environment and shrimp and to assess its role on production performances of shrimps. Thus, our results show...
Tipo: Text
Palavras-chave: Biofloc; Crevette; Nutrition; Stress oxydant; Défenses antioxydantes; Immunité; Reproduction; Oeufs; Larves; Bactéries; Microbiote; Biofloc; Shrimp; Nutrition; Oxidative stress; Antioxidant defences; Immunity; Reproduction; Eggs; Larvae; Bacteria; Microbiota.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00272/38294/36492.pdf

Bacterial community characterization of water and intestine of the shrimp Litopenaeus stylirostris in a biofloc system
Provedor de dados: 5
Autores: Cardona, Emilie; Gueguen, Yannick; Magré, Kevin; Lorgeoux, Bénédicte; Piquemal, David; Pierrat, Fabien; Noguier, Florian; Saulnier, Denis.
Background  Biofloc technology (BFT), a rearing method with little or no water exchange, is gaining popularity in aquaculture. In the water column, such systems develop conglomerates of microbes, algae and protozoa, together with detritus and dead organic particles. The intensive microbial community presents in these systems can be used as a pond water quality treatment system, and the microbial protein can serve as a feed additive. The current problem with BFT is the difficulty of controlling its bacterial community composition for both optimal water quality and optimal shrimp health. The main objective of the present study was to investigate microbial diversity of samples obtained from different culture environments (Biofloc technology and clear...
Tipo: Text
Palavras-chave: Shrimp; Biofloc; Clear sea water; Bacterial communities; Culture environment; Microbiota.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00346/45694/45314.pdf

Influence of the diet on the microbial diversity of faecal and gastrointestinal contents in gilthead sea bream (Sparus aurata) and intestinal contents in goldfish (Carassius auratus)
Provedor de dados: 5
Autores: De Paula Silva, Flavia Cristina; Nicoli, Jacques Robert; Zambonino, Jose Luiz; Kaushik, Sadasivam; Gatesoupe, François-joel.
Fish intestinal microbiota changes with diet and this effect is of particular interest considering the increasing substitution of fish meal by plant protein sources. The objective of this work was to study the effects of partial substitution of fish meal with lupin and rapeseed meals on gut microbiota of the gilthead sea bream (Sparus aurata) and in goldfish (Carassius auratus). Faecal, gastrointestinal and intestinal contents were characterized by culture-based and molecular methods. Vibrionaceae was high in faeces and in the intestine of sea bream, while a more diverse microbiota was retrieved from the stomach, where Bacillales and Flavobacteriaceae appeared to be influenced by the diet. PCR-DGGE profiles revealed high diversity of the microbiota...
Tipo: Text
Palavras-chave: Vegetable meals; DGGE; Microbiota; Stomach; Intestine; Faeces.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00040/15096/12440.pdf

Skin microbiome of coral reef fish is highly variable and driven by host phylogeny and diet
Provedor de dados: 5
Autores: Chiarello, Marlene; Auguet, Jean-christophe; Bettarel, Yvan; Bouvier, Corinne; Claverie, Thomas; Graham, Nicholas A. J.; Rieuvilleneuve, Fabien; Sucre, Elliot; Bouvier, Thierry; Villeger, Sebastien.
Background: The surface of marine animals is covered by abundant and diversified microbial communities, which have major roles for the health of their host While such microbiomes have been deeply examined in marine invertebrates such as corals and sponges, the microbiomes living on marine vertebrates have received less attention. Specifically, the diversity of these microbiomes, their variability among species, and their drivers are still mostly unknown, especially among the fish species living on coral reefs that contribute to key ecosystem services while they are increasingly affected by human activities. Here, we investigated these knowledge gaps analyzing the skin microbiome of 138 fish individuals belonging to 44 coral reef fish species living in the...
Tipo: Text
Palavras-chave: Tropical; Teleost; Microbiota; Phylogenetic diversity; Phylosymbiosis; Phylogenetic signal.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00454/56565/74934.pdf

Sustaining Rare Marine Microorganisms: Macroorganisms As Repositories and Dispersal Agents of Microbial Diversity
Provedor de dados: 5
Autores: Troussellier, Marc; Escalas, Arthur; Bouvier, Thierry; Mouillot, David.
Recent analyses revealed that most of the biodiversity observed in marine microbial communities is represented by organisms with low abundance but, nonetheless essential for ecosystem dynamics and processes across both temporal and spatial scales. Surprisingly, few studies have considered the effect of macroorganism-microbe interactions on the ecology and distribution dynamics of rare microbial taxa. In this review, we synthesize several lines of evidence that these relationships cannot be neglected any longer. First, we provide empirical support that the microbiota of macroorganisms represents a significant part of marine bacterial biodiversity and that host-microbe interactions benefit to certain microbial populations which are part of the rare biosphere...
Tipo: Text
Palavras-chave: Microbial communities; Microbial biodiversity; Rare biosphere; Microbiota; Macroorganism-microbe interactions; Dispersal; Metacommunity; Gut microbiota.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00390/50123/50721.pdf

Comparison of the effects of the dietary addition of two lactic acid bacteria on the development and conformation of sea bass larvae, Dicentrarchus labrax, and the influence on associated microbiota
Provedor de dados: 5
Autores: Lamari, Faouzi; Castex, Mathieu; Larcher, Thibaut; Ledevin, Mireille; Mazurais, David; Bakhrouf, Amina; Gatesoupe, Joel.
Probiotics may have many effects on health and development of fish larvae. One of the most promising is related to spinal conformation, though the mode of action is not clearly understood. The present study attempted to investigate the effects of two strains of lactic acid bacteria on associated microbiota, histological development and gene expression. Sea bass larvae were fed since 5 dph (day post hatch) with either a standard control diet (Diet C), or the same diet supplemented with Pediococcus acidilactici MA18/5M (Diet P), or with an autochthonous strain of Lactobacillus casei (X2; Diet L). The two lactic acid bacteria were incorporated in the diets at the levels of 106 and 107 CFU (colony forming units) g-1 in two consecutive experiments,...
Tipo: Text
Palavras-chave: Fish larvae; Probiotics; Microbiota; Histopathology; Gene expression; DGGE.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00108/21966/19673.pdf

Schistosomiasis Vector Snails and Their Microbiota Display a Phylosymbiosis Pattern
Provedor de dados: 5
Autores: Huot, Camille; Clerissi, Camille; Gourbal, Benjamin; Galinier, Richard; Duval, David; Toulza, Eve.
Planorbidae snails are the intermediate host for the trematode parasite of the Schistosoma genus, which is responsible for schistosomiasis, a disease that affects both humans and cattle. The microbiota for Schistosoma has already been described as having an effect on host/parasite interactions, specifically through immunological interactions. Here, we sought to characterize the microbiota composition of seven Planorbidae species and strains. Individual snail microbiota was determined using 16S ribosomal DNA amplicon sequencing. The bacterial composition was highly specific to the host strain with limited interindividual variation. In addition, it displayed complete congruence with host phylogeny, revealing a phylosymbiosis pattern. These results were...
Tipo: Text
Palavras-chave: Microbiota; Phylosymbiosis; Metabarcoding; Planorbid snails; Tripartite interactions; Schistosomiasis.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00606/71807/70295.pdf

Disturbance induced decoupling between host genetics and composition of the associated microbiome
Provedor de dados: 5
Autores: Wegner, Karl Mathias; Volkenborn, Nils; Peter, Hannes; Eiler, Alexander.
Background  Studies of oyster microbiomes have revealed that a limited number of microbes, including pathogens, can dominate microbial communities in host tissues such as gills and gut. Much of the bacterial diversity however remains underexplored and unexplained, although environmental conditions and host genetics have been implicated. We used 454 next generation 16S rRNA amplicon sequencing of individually tagged PCR reactions to explore the diversity of bacterial communities in gill tissue of the invasive Pacific oyster Crassostrea gigas stemming from genetically differentiated beds under ambient outdoor conditions and after a multifaceted disturbance treatment imposing stress on the host. Results  While the gill associated microbial communities in...
Tipo: Text
Palavras-chave: Microbiota; Population structure; Stress; Pathogen; Biological invasion; Pacific oyster; Crassostrea gigas; Vibrio; Mycoplasma.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00171/28202/26430.pdf

The marine intertidal zone shapes oyster and clam digestive bacterial microbiota
Provedor de dados: 5
Autores: Offret, Clement; Paulino, Sauvann; Gauthier, Olivier; Château, Kevin; Bidault, Adeline; Corporeau, Charlotte; Miner, Philippe; Petton, Bruno; Pernet, Fabrice; Fabioux, Caroline; Paillard, Christine; Blay, Gwenaelle Le.
Digestive microbiota provides a wide range of beneficial effects on host physiology and are therefore likely to play a key role in marine intertidal bivalve ability to acclimatize to the intertidal zone. This study investigated the effect of intertidal levels on the digestive bacterial microbiota of oysters Crassostrea gigas and clams Ruditapes philippinarum, two bivalves with different ecological niches. Based on the 16S rRNA region sequencing, digestive glands, seawater and sediments harbored specific bacterial communities, dominated by OTUs assigned to the Mycoplasmatales, Desulfobacterales and Rhodobacterales orders, respectively. Field implantation modified digestive bacterial microbiota of both bivalve species according to their intertidal position....
Tipo: Text
Palavras-chave: Microbiota; Oysters; Clams; Intertidal zone; Digestive gland; Metabarcoding.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00628/73961/73320.pdf

Establishment of microbiota in larval culture of Pacific oyster, Crassostrea gigas
Provedor de dados: 5
Autores: Asmani, Katia; Petton, Bruno; Le Grand, Jacqueline; Mounier, Jerome; Robert, Rene; Nicolas, Jean-louis.
This study has two main objectives: (1) to implement a recycling aquaculture system (RS) for the larvae of the oyster Crassostrea gigas, and (2) to characterise the bacterial communities established in different compartments of this system. An RS with 25% fresh seawater addition per hour and another with no addition (0%) were compared with a flow-through system (FT). Larval survival was equivalent in RS and FT, but growth rate was 17% slower in RS than in FT. The physical chemical parameters remained stable, except for pH that decreased to 7.75 and salinity that increased to 37.5‰ in the RS 0%. In both systems, the cultivable bacteria were present in similar numbers in seawater (around 105 ml− 1) and in larvae (103 larva− 1) on day 15.  Bacterial...
Tipo: Text
Palavras-chave: RAS; Bivalve larvae; Microbiota; Pyrosequencing; Hatchery.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00346/45691/45311.pdf

Parâmetros sanguíneos, hepáticos e ruminais de ovinos alimentados com dietas com farelo de mamona destoxificado
Provedor de dados: 86
Autores: Menezes,Daniel Ribeiro; Costa,Roberto Germano; Araújo,Gherman Garcia Leal de; Pereira,Luiz Gustavo Ribeiro; Oliveira,Pablo Teixeira Leal de; Silva,Aldrin Ederson Vila Nova; Voltolini,Tadeu Vinhas; Moraes,Salete Alves de.
O objetivo deste trabalho foi avaliar os parâmetros sanguíneos, hepáticos e ruminais, bem como caracterizar e quantificar a população de protozoários ciliados, no rúmen de ovinos alimentados com dietas com farelo de mamona destoxificada (FM). Foram utilizados 32 ovinos, para a avaliação dos parâmetros sanguíneos e hepáticos, e quatro ovinos adultos fistulados no rúmen, para a avaliação dos parâmetros ruminais. A dieta controle foi composta por feno de capim-buffel, milho em grão moído, ureia e farelo de soja (FS). Nos tratamentos, o FS foi substituído parcialmente pelo FM a 15, 30 e 45% no concentrado. Não houve diferença, entre os tratamentos, quanto aos teores de ureia no soro, cuja média foi de 666,0 mg L-1. Não houve diferença entre as dietas quanto à...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ricinus communis; Ciliados; Metabolismo; Microbiota; Rúmen.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000100014

Effects of Nutrient Density and exogenous enzymesin Starter Diet on Performance, Intestinal Microflora, Gut Morphology and Immune Response of Broiler Chickens
Provedor de dados: 89
Autores: Nabizadeh,A; Golian,A; Hassanabadi,A; Zerehdaran,S.
ABSTRACT A total of 810 one-day-old, straight-run broilers were used to evaluate the effects of dietary nutrient density and feed additives included in the starter diet on their performance, intestinal microbiota, gut morphology, and immune response. A 3×3 factorial arrangement with three nutrient densities (100, 103.75 and 107.5%, as recommended) and three feed additives (no additives, 0.5 g/kg diet Maxi-Gen, and Maxi-Gen + Superzyme + Bio-Phytase at the rate of 0.5, 0.25 and 0.1 g/kg diet, respectively), fed from 1 to 10 d of age. Similar commercial corn-soy grower and finisher diets fed to all birds from 10-24 and 24-42 d of age, respectively. There was higher (p&lt;0.05) body weight gain and lower (p&lt;0.05) feed conversion ratio in chicks fed starter...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid density; Intestinal morphology; Microbiota; Growth performance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300509

Raoultella ornithinolytica Isolation in Cloacal Microbiota of Tinamus solitarius: Preliminary Data
Provedor de dados: 89
Autores: Marietto-Gonçalves,GA; Lima,EL; Nagayoshi,BA; Tonin,AA; Knöbl,T; Adreatti Filho,RL.
ABSTRACT Raoultella ornithinolytica is a gram-negative aerobic bacterium belonging to Enterobacteriaceae family, an emerging pathogen that causes several pathogenic conditions in man, with little veterinary importance; however, its identification is underestimated by conventional laboratory techniques. The present study reports the identification of R. ornithinolytica in Tinamus solitaries, during a routine sanitary evaluation of aerobic enterobacteria in cloacal microbiota of birds belonging to the Güira Oga Center, Puerto Iguazu, Argentina. The sample was preliminary classified as Klebsiella spp.; however, after the use of the MALDI-TOF MS technique it was identified as R. ornithinolytica. The sample was submitted to an antimicrobial susceptibility test,...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Raoultella; Enterobacteria; Microbiota; Wild birds; Public Health.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200189

Probiosis: concepts and prospects
Provedor de dados: 89
Autores: Barbosa,Lima R; Figueiredo-Lima,DF; Givisiez,PEN; Rabello,CBV; Gonzales,E; Silva,JHV.
The use of probiotics in animal and human feeding has been a subject of increasing interest both for the academia and the industry, mostly due to their potential positive effects on health and profitability. However, the knowledge on the composition of bacterial gastrointestinal communities in humans and animals, as well as its respective nutritional requirements, is far from being elucidated. Due to the ban of the use of antibiotic growth promoters in animal feeds, there has been an increasing interest on the utilization of probiotics to improve animal intestinal health under commercial settings. However, the possibility of horizontal transference of antibiotic-resistant genes between probiotic bacteria and pathogenic species has become a concern of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiotics; Microbiota; Prebiotics; Probiotics; Phytogenics.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000400001

Fermentação de esterco de suínos para uso como adubo orgânico
Provedor de dados: 91
Autores: Sediyama,Maria A. N.; Vidigal,Sanzio M.; Pedrosa,Marinalva W.; Pinto,Cláudia L. O.; Salgado,Luís T.
Os principais objetivos deste trabalho, foram: avaliar o processo de fermentação do esterco sólido de suínos, fazer a caracterização física, química e microbiológica dos adubos orgânicos produzidos e identificar o tempo ideal de fermentação. Esterco sólido de suínos, proveniente da separação mecânica, foi arranjado em pilhas de 2,0 m³, sem cobertura e com cobertura com lona plástica e as pilhas foram revolvidas quinzenalmente e umedecidas sempre que necessário, com monitoramento diário da temperatura. Pela análise das características temperatura, relação C:N e pH, verificou-se que o tempo de fermentação de 65 dias foi suficiente para maturação do esterco com características químicas e físicas adequadas. Houve aumento na concentração de nutrientes, exceto...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dejeto de suínos; Estabilização; Nutrientes; Microbiota; Sanidade.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662008000600011

Características ruminais e eficiência de síntese microbiana em novilhos alimentados com cama de frango e suplemento à base de microbiota ruminal liofilizada
Provedor de dados: 96
Autores: Oliveira,Ronaldo Lopes; Pereira,José Carlos; Silva,Paulo Roberto de Carvalho e; Euclydes,Ricardo Frederico.
O experimento foi realizado para avaliar o efeito de dois níveis de cama de frango (15,0 e 30,0%), associada ou não a um suplemento à base de microbiota ruminal liofilizada de bovinos adultos (0 e 10 g/anim.dia), na alimentação de novilhos Holandês/Zebu. Quatro novilhos fistulados no rúmen e abomaso foram distribuídos em quadrado latino 4 x 4 em arranjo fatorial 2 x 2 (nível de cama de frango x com ou sem micobiota ruminal), alimentados à vontade e individualmente. Composição microbiana, eficiência de síntese microbiana, pH e concentração de nitrogênio amoniacal no rúmen foram avaliados. O nível de 30,0% de cama de frango nas dietas de novilhos não influenciou a composição dos microrganismos ruminais, a eficiência de síntese microbiana e o pH ruminal....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Composição microbiana; Eficiência microbiana; Ruminal N-NH3 ruminal e pH; Cama de frango; Microbiota.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35981999000500030

Degradabilidade ruminal da cama de frango e do feno de capim coast-cross e avaliação de modelos matemáticos para estimativa da taxa de passagem de partículas
Provedor de dados: 96
Autores: Oliveira,Ronaldo Lopes; Pereira,José Carlos; Silva,Paulo Roberto de Carvalho e; Vieira,Ricardo Augusto Mendonça.
O experimento foi realizado para avaliar a cinética de degradação ruminal da matéria seca (MS), proteína bruta (PB) e fibra em detergente neutro (FDN) e os diferentes modelos para estimativa da taxa de passagem, em novilhos recebendo dietas com 15,0% de cama de frango, associada a dois níveis de suplemento à base de flora ruminal liofilizada de bovinos adultos (0 e 10 g/animal•dia). Quatro novilhos fistulados no rúmen e abomaso foram distribuídos em delineamento inteiramente casualizado. A taxa de passagem foi determinada por intermédio da técnica do cromo complexado à parede celular do feno de coast-cross, como indicador, e a degradabilidade, por intermédio da técnica do saco de náilon. Os modelos matemáticos foram avaliados por meio do estudo dos desvios...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cama de frango; Degradabilidade; Microbiota; Modelos matemáticos; Taxa de passagem.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35981999000400026

Consumo, digestibilidade e balanço de nitrogênio em novilhos alimentados com cama de frango e suplemento à base de microbiota ruminal liofilizada
Provedor de dados: 96
Autores: Oliveira,Ronaldo Lopes; Pereira,José Carlos; Silva,Paulo Roberto de Carvalho e; Leão,Maria Ignez.
Este experimento foi realizado para avaliar o efeito de dois níveis de cama de frango (15,0 e 30,0%), associada ou não a um suplemento à base de microbiota ruminal liofilizada de bovinos adultos (0 e 10 g/animal•dia), na alimentação de novilhos Holandês/Zebu. Quatro novilhos fistulados no rúmen e abomaso foram distribuídos em um quadrado latino 4 x 4 em arranjo fatorial e alimentados individualmente à vontade. O consumo e as digestibilidades totais e parciais dos nutrientes foram avaliados. Não houve efeito do nível de cama de frango sobre o consumo e os coeficientes de digestibilidade da matéria seca (MS), matéria orgânica (MO) e fibra em detergente neutro (FDN). O aumento do nível de cama de frango na dieta elevou o coeficiente de digestibilidade...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Balanço de nitrogênio; Cama de frango; Consumo; Digestibilidade; Microbiota.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35981999000400025

Evaluation of the use of probiotic (Bacillus subtilis C-3102) as additive to improve performance in broiler chicken diets
Provedor de dados: 96
Autores: Nunes,Jaqueline Oliveira; Bertechini,Antonio Gilberto; Brito,Jerônimo Ávito Gonçalves de; Fassani,Édison José; Mesquita,Fabrício Rivelli; Makiyama,Letícia; Meneghetti,Camila.
The objective of this experiment was to evaluate the use of probiotic based upon Bacillus subtilis C-3102 (BS) in broiler diets containing or not conventional additive growth-promoter (AGP). A total of 1,824 one-day-old chicks of the Cobb-500 strain were used and distributed into 48 plots (1.50 × 2.00 m). A completely randomized design with four treatments and 12 repetitions was adopted. The treatments evaluated were: 1- Negative Control - AGP-free diet (NC); 2 - Positive Control, with AGP halquinol 30 mg/kg diet (PC); 3 - NC + BS (3x10(5) cfu/g diet); and 4 - PC + BS (3x10(5) cfu/g diet). The diets were on corn, soybean meal and meat and bone meal basis, formulated according to the nutrient allowances of the Strain Cobb Guide, following a feed program...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial; Meat poultry production; Microbiota; Nutrition.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001100012

Variabilidade espacial da comunidade bacteriana intestinal de suínos suplementados com antibióticos ou extratos herbais
Provedor de dados: 96
Autores: Pedroso,Adriana Ayres; Oetting,Liliana Lotufo; Utiyama,Carlos Eduardo; Menten,José Fernando Machado; Lambais,Marcio Rodrigues; Miyada,Valdomiro Shigueru.
Este trabalho foi conduzido para se avaliar o efeito da suplementação com antimicrobianos (associação de 50 ppm de colistina, 50 ppm de bacitracina de zinco e 50 ppm de olaquindox) ou extratos herbais (à base de tomilho, cravo e orégano, na concentração de 0 ppm, 700 ppm, 1.400 ppm e 2.100 ppm) sobre a comunidade de Bacteria do duodeno, jejuno, íleo e ceco de suínos com 56 dias de idade. Foi utilizada a técnica de eletroforese em gel de poliacrilamida com gradiente de desnaturação de amplicons da região V3 do rDNA 16S. O antibiótico e o extrato herbal proporcionaram diminuição na incidência de diarréia. O extrato herbal, em diferentes concentrações, proporcionou desempenho similar ao dos animais suplementados com antibiótico. O nível de 2.100 ppm de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Desempenho; Microbiota; Poliacrilamida; Promotores de crescimento; Suínos.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982005000400018

Effect of litter treatment on growth performance, intestinal development, and selected cecum microbiota in broiler chickens
Provedor de dados: 96
Autores: Taherparvar,Gilaneh; Seidavi,Alireza; Asadpour,Leila; Payan-Carreira,Rita; Laudadio,Vito; Tufarelli,Vincenzo.
ABSTRACT The objective of this study was to determine whether the type of bedding materials (sand, wood shavings, and paper) and of two chemical amendments (lime and bentonite) could interfere with litter quality (moisture, pH, and total bacterial counts), thereby influencing also the growth performance and the development of intestinal traits and cecum microbiota of chickens. Two hundred and seventy male Ross 308 broiler chickens were randomly assigned into nine treatment groups with three replicates per treatment. Broiler productive parameters, relative weight of different intestinal segments, content of cecal total bacterial counts (total aerobic bacteria, Lactobacilli, and coliforms), as well as litter moisture, pH, and total aerobic bacteria and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bedding material; Broilers; Growth; Litter quality; Microbiota.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000500257

Identificação por maldi-tof ms (matrix-assisted laser desorption ionization–time of flight mass spectrometry) de bactérias gram-negativas em irerês (dendrocygna viduata) em rota de migração
Provedor de dados: 195
Autores: Franco, L S; Cunha, M P V; Oliveira, M G X; Marcatti, R; Moreno, L Z; Christ, A P G; Sato, M I Z; Moreno, A M; Knöbl, T.
As aves de vida livre podem carrear agentes zoonóticos de importância em saúde pública e os seus hábitos migratórios contribuem para dispersão de tais agentes. Os irerês (Dendrocygna viduata) são anatídeos encontrados na América do Sul, América Central e na África Ocidental. Esta espécie ocorre em todo território nacional e o estado de São Paulo é uma importante parte da rota migratória de vários grupos da espécie que desaparecem no período mais seco e retornam em épocas de cheias. Durante o período de migração para fora do Brasil, os grupos de irerês dividem o território e interagem com outras aves que realizam migrações intercontinentais; pouco se sabe sobre a microbiota dessas aves. O presente trabalho avaliou a microbiota oral e cloacal de 49 irerês...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bactérias gram-negativas; Aves; Microbiota; Cloaca; Irerês.
Ano: 2016
URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/31050

Las arvenses como hospedantes de microorganismos en un agroecosistema de sucesión Zea mays L.- Phaseolus vulgaris L.
Provedor de dados: 109
Autores: Blanco Valdés,Yaisys; Leyva Galán,Ángel; Castro Lizazo,Iván.
Resumen La competencia entre las plantas arvenses y los cultivos es un tema de gran interés, ya que esta interacción puede causar grandes pérdidas en la agricultura. A pesar de algunos estudios en este tema, poco se sabe sobre la importancia de los microorganismos. Las plantas arvenses tienden a presentar interacciones positivas con la microbiota del suelo, mientras que los cultivos presentan interacciones neutras o negativas. La competición entre las plantas arvenses y los cultivos promueven cambios en la comunidad microbiana del suelo. El objetivo del presente trabajo fue determinar los microorganismos de mayor relevancia en la rizófora de las principales especies de arvenses colectadas en los cultivos de maíz y frijol sembrados en sucesión durante tres...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundancia; Diversidad; Microbiota; Morfotipo; Rizósfera.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122021000200133

BIODEGRADACIÓN DE DOS RESIDUOS DE ESTACIONES DE SERVICIO EN RÍO GALLEGOS - ARGENTINA
Provedor de dados: 37
Autores: Acuña,Adrian J; Cambarieri,Luciana; Pucci,Graciela Ν.
RESUMEN La producción de efluentes contaminados con hidrocarburos en las estaciones de servicio es un inconveniente a controlar y dar un tratamiento adecuado. Este trabajo tuvo como objetivo estudiar la biorremediación de dos residuos de estaciones de servicio de la ciudad de Río Gallegos, Santa Cruz, Argentina por medio de biodegradación. Se realizó la caracterización de la fase oleosa obtenida de efluentes de dos estaciones de servicio y se realizó una biorremediación con microcosmos de los mismos. El seguimiento se realizó con análisis de GC/MS para hidrocarburos y perfiles de ácidos grasos microbianos, como también se realizó un seguimiento de las bacterias degradadoras de hidrocarburos. Los dos residuos mostraron diferente perfil cromatográfico; esto...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Combustibles fósiles; Microbiota; Restauración.
Ano: 2020
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2020000300299

MICROBIOTA RIZOSFÉRICA DE Espeletia spp. DE LOS PÁRAMOS DE SANTA INÉS Y DE FRONTINO-URRAO EN ANTIOQUIA, COLOMBIA
Provedor de dados: 37
Autores: LIZARAZO-MEDINA,Pilar Ximena; GÓMEZ-VÁSQUEZ,Diana.
El frailejón cuyo nombre científico es Espeletia spp., es considerado el arbusto emblema de los páramos, un ecosistema de importancia debido a que son fuente de agua y de materia orgánica, donde se han registrado un alto número de especies biológicas endémicas. Considerando la relevancia de la microbiota en la estructuración del suelo y en la disponibilidad de los nutrientes como soporte para el crecimiento vegetal, se determinaron las poblaciones microbianas cultivables de importancia funcional como dinamizadora de nutrientes en el suelo rizosférico de Espeletia spp. en el páramo de Santa Inés y en el de Frontino-Urrao en Antioquia. Los suelos se caracterizaron por ser ácidos y en el páramo de Frontino-Urrao se reportaron los mayores contenidos de materia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Espeletia spp; Microbiota; Páramos; Rizósfera; Suelo.
Ano: 2015
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2015000100018

Microbiota bacteriana de ovos de jacaré-do-pantanal incubados naturalmente
Provedor de dados: 45
Autores: Pulcherio,R.; Maruyama,F.H.; Dorado-Rodrigues,T.; Silveira,M.; Dutra,V.; Ferraz,R.
RESUMO A cadeia produtiva do Caiman yacare tem-se destacado no Mato Grosso com a exportação de 143.386 peles em 2015, cujo sistema de manejo (ranching) implica a incubação artificial dos ovos. Nesse processo, a contaminação bacteriana de ovos influencia a taxa de eclosão. O conhecimento da microbiota de ovos incubados naturalmente orienta o manejo sanitário adequado no incubatório. No presente estudo, são apresentadas informações sobre essa microbiota e sua correlação com a de outros crocodilianos, apontando-se as espécies com potencial patogênico. Amostras de 20 ninhos de C. yacare foram coletadas e semeadas em ágar sangue e ágar Mac Conckey. A colônia condizente com Salmonella sp. foi confirmada pela técnica de reação em cadeia de polimerase. Das 22...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ranching; Criação comercial; Enterobactéria; Microbiota; Ninho.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601676

Malassezia pachydermatis: enzymes production in isolates from external ear canal of dogs with and without otitis
Provedor de dados: 45
Autores: Coutinho,S.D.A.
The relationship between production of enzymes and pathogenicity of Malassezia pachydermatis strains was studied. Thirty strains of M. pachydermatis isolated from dogs were used: 15 originating from animals with external otitis and 15 obtained from ears of asymptomatic dogs. The samples, obtained by introduction of a sterile swab into the auditory canal after cleaning the auricle with alcohol-ether solution, were seeded onto Sabouraud dextrose agar with chloramphenicol (100mg/l) and were incubated at 37°C for up to two weeks. The colonies were identified according to their macro-and-micromorphology. All strains were investigated for the production of chondroitin-sulphatase, hyaluronidase, phospholipase and proteinase. Most of the strains showed a high...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Malassezia pachydermatis; Enzymes; Otitis; Microbiota.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000800003

Selection of autochtone probiotic for Astyanax bimaculatus
Provedor de dados: 45
Autores: Jatobá,A.; Moraes,A.V.; Steckert,L.D.; Jesus,G.F.A.
ABSTRACT This study aimed to isolate native lactic acid bacteria of yellow tail lambari (Astyanax bimaculatus) and evaluate their effect on host microbiota and gut morphology, as well as survival after experimental challenge. The isolated bacterial strains were evaluated for their inhibition against pathogenic bacterial strains in vitro, and the strain with highest inhibitory ability was molecularly identified as Lactobacillus spp. For in vivo testing, eighty fish were distributed in ten tanks equipped with a recirculation system. The experimental units were divided into two treatments: fish fed with Lactobacillus spp. supplement and fish fed an unsupplemented diet (control). After 30 days, guts from three fish from each experimental unit were pooled for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactobacillus; Yellow tail lambari; Gut morphology; Microbiota; Experimental challenge.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601645

Microbiological profile of donor corneas stored for tectonic transplantation purposes in rabbits
Provedor de dados: 45
Autores: Kobashigawa,K.K.; Martins,B.C.; Massoli,M.C.B.; Ishizawa,T.H.; Schocken-Iturrino,R.P.; Brooks,D.E.; Laus,J.L.
This study aimed to evaluate the microbiota of donor rabbit corneas stored for tectonic transplantation purposes. Swabs from both corneas of 20 rabbits were carefully collected and submitted to microorganism isolation and identification. After this first swab collection, rabbits were euthanized for reasons other than this project and the eyes were enucleated. The corneas were collected and stored to compose the cornea tissue bank. Corneas were stored in a 0.3% tobramycin solution at -20ºC. After 30 days, the corneas were thawed at room temperature and removed from the antibiotic. New swabs were obtained from the corneas and submitted to microorganism isolation and identification. Gram positive organisms were predominant in the rabbit corneal flora before...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rabbit; Corneal bank; Microbiota; Corneal transplant.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100010

Normal microbiota of the perialveolar region of incisors of rats
Provedor de dados: 45
Autores: Araújo,F.R.G.; Castro,C.M.M.B.; Severo,M.S.; Diniz,M.F.A.; Viana,M.T.; Evêncio,L.B.
Identificou-se a microbiota normal da região peri-alveolar de incisivos em 72 ratos Wistar, com 70-90 dias de idade e 280-330g de peso. As bactérias foram coletadas com suabes embebidos em solução salina. Do material depositado em tubo contendo 460µl de Brain Heart Infusion e diluído em 1:10, retirou-se 1µl para semeadura em placas de Petri. O crescimento médio foi 1,4x10(6) ± 2,6x10(5)UFC/ml. Segundo a ordem das freqüências, as bactérias encontradas foram: Bacillus sp., Staphylococcus aureus, Streptococcus viridans, Corynebacterium sp., Staphylococcus coagulase negativa, Enterococcus sp., Staphylococcus saprophyticcus, Escherichia coli, Klebsiella oxytoca, Klebsiella pneumoniae e Serratia liquefaciens. De todas as bactérias isoladas, as Gram-positivas e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rat; Microbiota; Aerobic bacteria; Perialveolar region; Alveoliti.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000600037

Hospital strain colonization by Staphylococcus epidermidis
Provedor de dados: 56
Autores: Blum-Menezes,D.; Bratfich,O.J.; Padoveze,M.C.; Moretti,M.L.
The skin and mucous membranes of healthy subjects are colonized by strains of Staphylococcus epidermidis showing a high diversity of genomic DNA polymorphisms. Prolonged hospitalization and the use of invasive procedures promote changes in the microbiota with subsequent colonization by hospital strains. We report here a patient with prolonged hospitalization due to chronic pancreatitis who was treated with multiple antibiotics, invasive procedures and abdominal surgery. We studied the dynamics of skin colonization by S. epidermidis leading to the development of catheter-related infections and compared the genotypic profile of clinical and microbiota strains by pulsed field gel electrophoresis. During hospitalization, the normal S. epidermidis skin...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Staphylococcus epidermidis; Microbiota; Biofilm; Central venous catheter.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000300011

Parasitic infections in germfree animals
Provedor de dados: 56
Autores: Vieira,L.Q.; Oliveira,M.R.; Neumann,E.; Nicoli,J.R.
The association of vertebrate hosts with the indigenous microbiota and its effect on the response to infections has long been a subject of scientific curiosity. From the first theory supported by Louis Pasteur that life would be impossible in the absence of associated microorganisms to the development of germfree mammals for research, a lot was learned about how the normal microbiota influences the environment in which pathogens may find themselves. In the present review, we attempt to summarize the more recent results from our group and others on the influence of the normal microbiota on the outcome of parasitic infections. Our results and those of others point to a complex relationship between the mammalian system and its indigenous microbiota, leading...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Germfree; Microbiota; Gnotobiotic; Infection; Leishmania; Trypanosoma.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000100013

Association among genetic predisposition, gut microbiota, and host immune response in the etiopathogenesis of inflammatory bowel disease
Provedor de dados: 56
Autores: Basso,P.J.; Fonseca,M.T.C.; Bonfá,G.; Alves,V.B.F.; Sales-Campos,H.; Nardini,V.; Cardoso,C.R.B.
Inflammatory bowel disease (IBD), which includes Crohn's disease (CD) and ulcerative colitis (UC), is a chronic disorder that affects thousands of people around the world. These diseases are characterized by exacerbated uncontrolled intestinal inflammation that leads to poor quality of life in affected patients. Although the exact cause of IBD still remains unknown, compelling evidence suggests that the interplay among immune deregulation, environmental factors, and genetic polymorphisms contributes to the multifactorial nature of the disease. Therefore, in this review we present classical and novel findings regarding IBD etiopathogenesis. Considering the genetic causes of the diseases, alterations in about 100 genes or allelic variants, most of them in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Inflammatory bowel disease; Crohn's disease; Ulcerative colitis; Immune response; Etiology; Microbiota.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000900727

Dominant culturable bacterial microbiota in the digestive tract of the American black vulture (Coragyps atratus Bechstein 1793) and search for antagonistic substances
Provedor de dados: 58
Autores: Carvalho,Lydston Rodrigues de; Farias,Luiz Macêdo; Nicoli,Jacques Robert; Silva,Maria Clara Fernandes; Corsino,Andrea Teresa Santos Meira; Lima,Luiz André de; Redondo,Rodrigo Aparecido Fernandes; Ferreira,Paulo César Peregrino; Pinto,Maria Elizabeth Bernardes Margutti.
Strict and facultative culturable anaerobic bacteria from the digestive tract of six American black vultures (Coragyps atratus Bechstein 1793) were isolated and identified. After capture, the birds received a non-contaminated diet for one week to eliminate possible allochthonous microorganisms. Then, specimens collected from tongue, stomach and intestines were weighed, submitted to decimal dilution in an anaerobic chamber, inoculated into culture media and incubated aerobically and anaerobically at 37ºC for enumeration, isolation and identification. Isolated bacteria were submitted to tests to detect possible antagonisms between them. The total bacterial population along the digestive tract ranged from 3.46 ± 0.39 log CFU/g in the stomach to 10.75 ± 0.37...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Culture; Microbiota; Digestive tract; Antagonistic substance.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000300007

Fungal microbiota from ocular conjuctiva of clinically healthy horses belonging to the Military Police Cavalry of Alagoas
Provedor de dados: 58
Autores: Sousa,Maria Evódia de; Araújo,Maria Anilda dos Santos; Mota,Rinaldo Aparecido; Porto,Wagnner José Nascimento; Souza,Aryanna Kelly Pinheiro; Santos,Josimeire Lima dos; Silva,Patrícia Paes da.
Normal fungal conjunctiva microbiota of horses remains stable in healthy animals, free from ocular and/or systemic diseases which may, eventually, cause ocular alterations. The knowledge of the fungal microbiota is of great importance due to the reduced number of studies reported in the literature and also to the large occurrence of ocular alterations, mainly keratomycosis, in these animals. The aim of this study was to isolate and to identify the fungi present in the ocular conjunctiva of healthy horses belonging to the Military Police Cavalry of Alagoas. Samples from both conjunctival sacks from 50 horses were taken using a sterile swab and submitted to fungal cultures. These samples were seeded by radial spreading of the swabs on the Sabouraud agar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbiota; Fungi; Horses; Ocular conjunctiva.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000300038

Microbiota and anthropic interference on antimicrobial resistance profile of bacteria isolated from Brazilian maned-wolf (Chrysocyon brachyurus)
Provedor de dados: 58
Autores: Vieira-da-Motta,Olney; Eckhardt-de-Pontes,Luiz Antonio; Petrucci,Melissa Paes; Santos,Israel Pereira dos; Cunha,Isabel Candia Nunes da; Morato,Ronaldo Gonçalves.
Both the study of Brazilian wild mammal fauna and the conditions that foster the preservation of endangered species, such as Brazilian Maned-wolf (Chrysocyon brachyurus), in wild life are of extreme importance. In order to study the resistance profile of microbiota bacterial colonizing Brazilian Maned-wolf, this work investigated samples from eight male captive and free roaming animals originating from different Brazilian geographical regions. Samples for microbiological purposes were collected with swabs and kept in appropriate transport medium. Using routine microbiological techniques, the isolated bacteria were tested toward antimicrobial drugs by the agar disk diffusion method. Results showed that all samples from wild animals were sensitive toward all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Maned-wolf; Chrysocyon brachyurus; Microbiota; Antimicrobial resistance; Anthropic pressure; Environment.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400042

Analysis of bacterial communities and characterization of antimicrobial strains from cave microbiota
Provedor de dados: 58
Autores: Yasir,Muhammad.
Abstract In this study for the first-time microbial communities in the caves located in the mountain range of Hindu Kush were evaluated. The samples were analyzed using culture-independent (16S rRNA gene amplicon sequencing) and culture-dependent methods. The amplicon sequencing results revealed a broad taxonomic diversity, including 21 phyla and 20 candidate phyla. Proteobacteria were dominant in both caves, followed by Bacteroidetes, Actinobacteria, Firmicutes, Verrucomicrobia, Planctomycetes, and the archaeal phylum Euryarchaeota. Representative operational taxonomic units from Koat Maqbari Ghaar and Smasse-Rawo Ghaar were grouped into 235 and 445 different genera, respectively. Comparative analysis of the cultured bacterial isolates revealed distinct...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caves; 16S ribosomal RNA; Microbiota; Antimicrobial; Sediments.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000200248

Nasal, oral and rectal microbiota of Black lion tamarins (Leontopithecus chrysopygus)
Provedor de dados: 58
Autores: Carvalho,Vania M.; Vanstreels,Ralph E.T.; Paula,Cátia D.; Kolesnikovas,Cristiane K.M.; Ramos,Maria Christina C.; Coutinho,Selene D.; Martins,Cristiana S.; Pissinatti,Alcides; Catão-Dias,José L.
Black lion tamarins (Leontopithecus chrysopygus) are endangered callithrichids. Their conservation may require future translocations or reintroductions; however these approaches involve risks of pathogen introduction in the environment and stress-related opportunistic infections in these animals. In order to screen for opportunistic and potential pathogenic bacterial and fungal microbiota, ten free-ranging and ten captive Black lion tamarins were studied and the results compared. Nasal, oral and rectal swabs were collected and cultured for aerobic and facultative anaerobic bacteria and fungi, and a total 203 bacterial and 84 fungal isolates were obtained. Overall, the most frequent organisms were Staphylococcus spp., Bacillus spp., Candida spp. and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbiota; Bacteria; Fungi; Black lion tamarins; Leontopithecus chrysopygus.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400051

Isolamento e identificação da microbiota periodontal de cães da raça Pastor Alemão
Provedor de dados: 65
Autores: Braga,Carla Afonso da Silva Bitencourt; Resende,Cleusa Maria Faria; Pestana,Ana Cristina Nogueira Rodrigues; Carmo,Luiz Semeão; Costa,José Eustáquio; Silva,Luiz Antonio Franco; Assis,Lílian Nery de; Lima,Larissa de Assis; Farias,Luiz Macedo; Carvalho,Maria Auxiliadora Roque.
A microbiota indígena gengival de cães não está totalmente descrita, sendo sua identificação uma etapa importante no estabelecimento da etiopatogenia e terapia da doença periodontal. O objetivo deste trabalho foi isolar e identificar a microbiota periodontal de cães da raça Pastor Alemão, considerando sítios saudáveis e com doença periodontal. Foram utilizados 29 cães, com idade variando de três a seis anos, sendo analisados espécimes clínicos de sítios periodontais saudáveis de 12 cães e sítios com periodontite de outros 17. Foram isoladas 672 amostras microbianas, com predomínio dos gêneros Pasteurella, Staphylococcus, Porphyromonas e Fusobacterium. A microbiota dos sítios saudáveis equiparou-se à dos sítios doentes, tratando-se de uma microbiota...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Doença periodontal; Cães; Microbiota.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782005000200022

Caracterização da microbiota por fungos filamentosos no tegumento hígido de bovinos de corte
Provedor de dados: 65
Autores: Amaral,Christiane Duarte Pombo do; Pereira,Daniela Isabel Brayer; Meireles,Mario Carlos Araujo.
O tegumento de bovinos pode albergar uma grande diversidade de fungos filamentosos, potencialmente capazes de causar dermatoses, incluindo fungos do grupo dos dermatófitos. O presente estudo teve por objetivos caracterizar a microbiota de fungos filamentosos do tegumento hígido de bovinos de corte, verificar a presença de dermatófitos como parte integrante da microbiota, assim como avaliar a ocorrência de dermatófitos no solo dos estabelecimentos estudados. Durante o período de um ano, 56 bovinos sadios de quatro propriedades da fronteira Oeste do RS foram submetidos a coletas mensais de pelos e raspado cutâneo. No mesmo período, foram obtidas amostras de solo para pesquisa de dermatófitos. As análises dos resultados indicaram uma microbiota de fungos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovinos; Dermatófitos; Microbiota; Fungos filamentosos; Solo.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011001200016

Determinação da microbiota presente na cloaca e orofaringe de avestruzes (Struthio camelus) clinicamente sadios
Provedor de dados: 65
Autores: Melville,Priscilla Anne; Cogliati,Bruno; Mangiaterra,Maria Bárbara Baptista Cepellos Daruiz; Peres,Monica Ruz; Moura,Sílvio Carlos Alves; Matsuda,Letícia; Kim,Andrezza; Benites,Nilson Roberti.
O conhecimento da microbiota que compõe as diferentes áreas do organismo tem importância reconhecida para a compreensão de doenças infecciosas que podem acometer os avestruzes, embora se disponha de dados limitados acerca deste assunto na literatura. Foi objetivo deste estudo determinar as espécies de microrganismos (bactérias aeróbias e fungos) que compõem a microbiota normal de avestruzes. Para tanto, foram coletadas amostras de cloaca (N=50) e orofaringe (N=50) de avestruzes hígidos de um criadouro. Das amostras de cloaca, foram isolados Escherichia coli (76% das amostras positivas), Bacillus spp. (60%), Streptococcus spp. (18%), Staphylococcus coagulase-negativo (16%), Pseudomonas aeruginosa (8%), Rhodotorula spp. (8%), dentre outros microrganismos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avestruz; Cloaca; Microbiota; Orofaringe; Patologia aviária.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000600031

Frequency in the supply of Lactobacillus influence its probiotic effect for yellow tail lambari
Provedor de dados: 65
Autores: Jatobá,Adolfo; Moraes,Klayton Natan; Rodrigues,Emanuel Fernandes; Vieira,Leandro Marcolino; Pereira,Marina Oliveira.
ABSTRACT:  The aim of this research was to evaluate the changes in intestinal tract microbiota, hematological parameters and zootechnical indexes of yellowtail lambaris (Astyanax bimaculatus) fed with different probiotic supply frequencies (Lactobacillus spp.). Lambaris (1,200) were distributed in twelve boxes, divided in three treatments, 100% supply; 25% and 0% (control) of feeds supplemented with probiotic. After 87 days, fish fed with supplemented diet, regardless of frequency (100% and 25%), showed an increase in the total lactic acid bacteria count of 7.99±0.15 log CFU mL-1 and 7.04±1, 29 log UFC mL-¹ respectively, in the intestinal tract and decrease of Pseudomonas spp. in both 100% and 25% (4.09±0.84log UFC mL-1 and 4.00±1.12log UFC mL-1,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food handling; Lactic acid bacteria; Astyanax; Hematology; Microbiota.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001000652

Isolation and genotyping of Clostridium perfringens from goats in Minas Gerais, Brazil
Provedor de dados: 65
Autores: Santana,Jordana Almeida; Ferreira,Ana Carolina de Andrade; Souza,Marina de Castro Campos de; Moreira,Maria Aparecida Scatamburlo; Lima,Magna Coroa; Cruz,Diogo Soares Gonçalves; Lobato,Francisco Carlos Faria; Silva,Rodrigo Otávio Silveira.
ABSTRACT: Despite the known importance of Clostridium perfringens as an enteropathogen in small ruminants, little is known about the role of its additional virulence factors or the frequency of the various C. perfringens genotypes in healthy goats; this complicates the laboratory diagnosis of the infections caused by this microorganism. In light of this, the aim of the present study was to isolate and genotype C. perfringens from stool samples from healthy goats in Brazil. Stool samples from 250 apparently healthy adult goats from 17 different herds in Minas Gerais, Brazil were collected, and isolation and genotyping of C. perfringens was performed. C. perfringens type A was isolated from 189 (75.6%) goats, whereas C. perfringens types C and D were each...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clostridium perfringens type D; Microbiota; Epsilon; Beta.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000700452

Microbiota indígena do meato acústico externo de gatos hígidos
Provedor de dados: 65
Autores: Amaral,Ricardo Coutinho do; Ibañez,José Fernando; Mamizuka,Elsa Masae; Gambale,Walderez; Paula,Claudete Rodrigues de; Larsson,Carlos Eduardo.
Cinqüenta felinos hígidos, adultos - vinte e seis machos e vinte e quatro fêmeas - sem definição racial, com distintas idades, reunidos em dois grupos (GRUPO 1- animais domiciliados e GRUPO 2 - animais que rendados) de vinte e cinco animais cada. Após anamnese e prévia sedação, os gatos foram submetidos a exame físico e à otoscopia, comprovando-se a ausência de lesões meatais e timpânicas, com cureta de Buck e wragatoas estéreis, foi colhido material meatal, que foi então submetido a exames bacteriológico e micológico. No Grupo 1, foi evidenciado presença de Otodectes cynotis (4% das amostras), em 72% dos casos de bolores e leveduras (Cladosporium sp 66,6%, Malassezia sp 40%, Penicillium sp 33%, Aspergillus sp 33,3%, Rhodotorula sp 20,0%, Mycelia sp 13,3%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbiota; Orelha; Gatos; Felinos.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781998000300015

Influência do fornecimento de probiótico à base de Lactobacillus sp. Sobre a microbiota intestinal de leitões
Provedor de dados: 64
Autores: Santos,Magali Soares dos; Ferreira,Célia Lúcia de Luces Fortes; Gomes,Paulo Cezar; Santos,José Lúcio dos; Pozza,Paulo Cesar; Teshima,Elisa.
Objetivou-se com este trabalho verificar o efeito do fornecimento de um "pool" de Lactobacillus sp. de origem suína para leitões nas fases de aleitamento e de creche sobre a contagem fecal de Lactobacillus, coliformes, Clostridium e Enterococcus. Foram analisadas 81 amostras fecais coletadas aos 7, 28 e 49 dias de idade, provenientes de leitões distribuídos em um delineamento experimental de blocos casualizados com três tratamentos (A- ração controle, B- ração contendo promotor de crescimento e C- fornecimento diário de probiótico do 1º ao 49º dia de vida). O probiótico testado não foi eficiente em alterar significativamente a microbiota intestinal dos animais (P&gt;0,10); entretanto, os animais que o receberam por 49 dias obtiveram, numericamente, maior...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbiota; Leitões; Probiótico.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542003000600026