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| Registros recuperados: 89 | |
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| Elsersy, N.A.; Abo-Ella, G.M.; El-Shenawy, M.; Abdel-Mawla, E.. |
| El-Max fish farm is one of the most important natural fish farm in Alexandria which is suffering from die-off of large amounts of fish. Facing this problem we must deal with the estimation of the quality of the farm raring unit environment (ponds). Analysis of samples using the Bray - Curtis similarity coefficient test yielded that, the input and El-Khandac were similar at (97%), while the eight ponds were classified at different level of similarity as follows: pond1 (B1) and pond7 (B7) were similar at (86%), B2 and B3 were similar at (90%), B14, B10 and B9 were similar at (93%), where as B11 is singly separated at (83%). Moreover, results indicate that distribution of the different bacterial groups was affected with one or more chemical parameters such as... |
| Tipo: Journal Contribution |
Palavras-chave: Vibriosis; Fish farm; E. coli; Streptococcus faecalis Microbiological analysis Microbiology Fish farms Microbiological analysis Microbiology http://aims.fao.org/aos/agrovoc/c_25302 http://aims.fao.org/aos/agrovoc/c_4800. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/1262 |
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| Erdem, Seda; Rigby, Dan. |
| This research locates a series of risks or hazards within a framework characterised by the level of control respondents believe they have over the risks, and the level of worry the risks prompt. It does this for a set of both food and non-food risks. The means by which this is done is novel, and differs from past risk perception analyses in that it questions people directly regarding their relative assessments of the levels of control and worry over the risks presented. The cognitive burden associated with people ranking and scaling items in large sets is notoriously heavy, so this study uses an elicitation method designed to make the process intuitive and cognitively manageable for respondents. The substantive analysis of the risk perceptions has four... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Best-worst scaling; Risk; Perception; Novel technology; E. coli; UK; Risk and Uncertainty. |
| Ano: 2011 |
URL: http://purl.umn.edu/108790 |
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| Boostani,A; Mahmoodian Fard,H R; Ashayerizadeh,A; Aminafshar,M. |
| The present study aimed at evaluating the effect of the probiotic thepax and yogurt (as probiotic) on the growth response and intestinal microflora results of broiler chickens. Two hundred forty day-old Ross 308 broilers were equally distributed into 12 floor pens and reared for 42 day. The treatments consisted of yogurt (10, 5 and 2.5% during starter, grower and finisher periods in the drinking water, respectively) and thepax (1000, 500, 250 g/ton-1 in the starter, grower and finisher diets, respectively), resulting three experimental diets and a control group. Each dietary treatment was fed ad-libitum to four replicate group of 20 birds at the beginning of rearing period. Birds and feed were weighed on days 21 and 42. The results of experiment indicate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ross 308; Probiotic; Carcass yield; E. coli. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000100001 |
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| Juang,J; Yin,H; Zhang,C; Wang,J. |
| ABSTRACT This experiment aimed to investigate whether Escherichia coli (E. coli) infection could affect the TGF-β/smads signaling pathway in the jejunal tissue of chickens. One-day-old Cobb 500 broilers were randomly divided into 2 groups and treated with intraperitoneal E. coli or broth injection. Clinical signs of the birds were assessed every day. Spleen and bursa of Fabricius of the birds, post-infection (pi), were collected to evaluate immune organ index. Jejunal tissues were collected to ascertain the expression of TGF-βs, TβRs, and Smads. The results showed that the infected birds had significantly higher index of the spleen (24hrs and 48hrs pi) compared with birds in the control group (p<0.05). The relative gene expression of TGF-β4 increased... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: TGF-β/Smads; Intestinal lesion; E. coli; Chicken. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100311 |
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| Matos,A.V.R.; Nunes,L.B.S.; Vianna,C.; Spina,T.L.B.; Zuim,C.V.; Possebon,F.S.; Xavier,D.M.; Ferraz,M.C.; Pinto,J.P.A.N.. |
| Foram colhidas amostras de 100 carcaças em um frigorífico exportador, localizado no interior do estado de São Paulo, amostradas ao longo de um ano, por meio do método de esponjas, aplicado na região do peito do animal. As amostras foram colhidas em três pontos, denominados A, B e C, sendo cada carcaça amostrada nos três pontos, localizados nas etapas: pós-sangria (A); pós-esfola (B) e pós-lavagem (C). Foram realizadas pesquisas de Listeria sp., E. coli O157, Salmonella spp. e microrganismos indicadores (Petrifilms® AC, EC e EB). Não foram isolados Listeria ou E. coli O157 em nenhuma das 300 amostras. Salmonella spp. foi isolada em nove, sendo oito no ponto A e uma no ponto B. Para mesófilos, as contagens variaram de 0 a 6,8 log UFC/cm², para coliformes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovinos; Salmonella; E. coli; Listeria; Microrganismos indicadores. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400007 |
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| Sá,M.F.; Aita,C.; Doneda,A.; Pujol,S.B.; Cantú,R.R.; Jacques,I.V.C.; Bastiani,G.G.; Oliveira,P.D.; Lopes,P.D.. |
| Microrganismos presentes em dejetos de suínos podem contaminar o meio ambiente. Embora a compostagem seja preconizada como um método eficiente para reduzir este potencial poluidor dos dejetos, existem poucas informações de pesquisa sobre tal processo. O presente trabalho teve o objetivo de avaliar a eficiência da compostagem automatizada dos dejetos líquidos de suínos (DLS) na redução da população de coliformes, usados como indicadores de poluição fecal. Os DLS foram adicionados periodicamente, durante 106 dias, em substrato constituído pela mistura, em partes iguais, de maravalha e serragem. Foram efetuadas 14 adições de DLS, e em cada adição as leiras de compostagem eram revolvidas por meio de uma máquina especialmente desenvolvida para este fim. Foram... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: E. coli; Resíduos da suinocultura; Tratamento de efluentes. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000401197 |
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| Siqueira,A.K.; Ribeiro,M.G.; Salerno,T.; Takahira,R.K.; Lopes,M.D.; Prestes,N.C.; Silva,A.V.. |
| Susceptibility profile and multiple drug resistance in 158 E. coli strains isolated from urinary tract infection (UTI), pyometra, and feces of dogs were studied. Norfloxacin, ciprofloxacin, and enrofloxacin were the most-effective drugs (>60%) for E. coli strains. High rates of resistance to antimicrobials were observed in 60% or more of the isolated strains using sulfametoxazole/trimetoprim. Multiple drug resistance for three or more antimicrobials was observed in two (47.1%) strains isolated from UTI, seven (13.5%) from pyometra, and four (7.3%) from feces. From these, 17 (33.3%), one (1.9%), and three (5.5%), respectively, showed multiple resistance to five or more drugs. |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Cão; E. coli; Sensibilidade antimicrobiana; Infecção do trato urinário; Piometra. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352008000500033 |
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| Gómez,Keyla M; Rodríguez,Andrea; Rodriguez,Yesseima; Ramírez,Alvaro H; Istúriz,Tomás. |
| Two systems are involved in the transport and phosphorylation of gluconate in Escherichia coli. GntI, the main system, consists of high and low-affinity gluconate transporters and a thermoresistant gluconokinase for its phosphorylation. The corresponding genes, gntT, gntU and gntK at 76.5 min, are induced by gluconate. GntII, the subsidiary system, includes IdnT and GntV, which duplicate activities of transport and phosphorylation of gluconate, respectively. Gene gntV at 96.8 min is divergently transcribed from the idnDOTR operon involved in L-idonate metabolism. These genetic elements are induced by the substrate or 5-keto-D-gluconate. Because gntV is also induced in cells grown in gluconate, it was of interest to investigate its expression in this... |
| Tipo: Journal article |
Palavras-chave: E. coli; Gluconate; GntII; GntV. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000300008 |
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| Comlekcioglu,Ugur; Gunes,Merva; Altun,Hanifi; Ekiz,Dilek Ozgun; Aygan,Ashabil. |
| ABSTRACT Rumen fungi inhabit the gastro-intestinal tract of ruminants and the most non-ruminant herbivores. Rumen fungi produce highly active plant cell wall degrading enzymes, therefore they have gained scientific interest. In this study, genes encoding xylanase (xynA-7) and cellulase (celA-5) were amplified from Neocallimastix sp. GMLF7 and Orpinomyces sp. GMLF5, respectively, and expressed in Escherichia coli. XynA-7 was found to be active only on xylan, however CelA-5 had activity both on carboxymethyl cellulose and lichenan. Lichenase activity of CelA-5 was found to be higher than carboxymethyl cellulase activity. The optimal conditions were at pH 6.0 and 40 °C for CelA-5 and at pH 6.5 and 50 °C for XynA-7. A coexpression vector was constructed to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rumen fungi; Xylanase; Cellulase; Coexpression; E. coli. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100407 |
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| Martinez,Pedro; Garzón,Denisse; Mattar,Salim. |
| OBJECTIVE: Describe the presence of CTX-M-1 phylogenetic subgroup extended-spectrum i-lactamases (ESBL), associated with TEM and SHV genes, and the gene encoding cephalosporinase, CMY-2 in Escherichia coli and Klebsiella pneumoniae isolates from community-acquired urinary tract infections. METHODS: 102 E. coli and 21 K. pneumoniae were collected from patients with culture-proven urinary tract infection (UTI), during February and March, 2011. Antimicrobial susceptibility test was performed by disk diffusion according to the standards of the Clinical Laboratory Standard Institute. Screening for cephalosporins-resistant E. coli and K. pneumoniae was performed by PCR assay for blaTEM, blaSHV, blaCTX-M-1,-2,-8,-9, blaPER-2 and blaCMY-2 genes. Statistical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: ESBL; CTX-M; E. coli; K. pneumonia; Community-acquired UTIs; Colombia. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702012000500003 |
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| Iovine,Renata de Oliveira; Dejuste,Catia; Miranda,Flávia; Filoni,Claudia; Bueno,Marina Galvão; Carvalho,Vania Maria de. |
| Increasing interactions between humans, domestic animals and wildlife may result in inter-species transmission of infectious agents. To evaluate the presence of pathogenic E. coli and Salmonella spp. and to test the antimicrobial susceptibility of isolates, rectal swabs from 36 different free-ranging wild mammals were taken from two distinct natural sites in Brazil: Cantareira State Park (CSP, state of São Paulo) and Santa Isabel do Rio Negro Region (SIRNR, state of Amazonas). The swabs were randomly collected and processed for bacterial isolation, identification, characterization and antimicrobial resistance. Eighteen E. coli strains from CSP and 20 from SIRNR were recovered from 14 and 22 individuals, respectively. Strains from animals captured in CSP,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: E. coli; Salmonella; Wild mammals; One Health; Brazil. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000401257 |
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| Tobias,Fernando Luiz; Garcia,Luize Néli Nunes; Kanashiro,Milton Masahiko; Medina-Acosta,Enrique; Brom-de-Luna,João Gato; Almeida,Claudia Maria Costa de; Azevedo Junior,Romildo Rocha; Lemos,Môsar; Vieira-da-Motta,Olney. |
| Ostrich raising around the world have some key factors and farming profit depend largely on information and ability of farmers to rear these animals. Non fertilized eggs from ostriches are discharged in the reproduction season. Staphylococcus aureus and Escherichia coli are microorganisms involved in animal and human diseases. In order to optimize the use of sub products of ostrich raising, non fertilized eggs of four selected birds were utilized for development of polyclonal IgY antibodies. The birds were immunized (200ug/animal) with purified recombinant staphylococcal enterotoxin C (recSEC) and synthetic recRAP, both derived from S. aureus, and recBFPA and recEspB involved in E. coli pathogenicity, diluted in FCA injected in the braquial muscle. Two... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ostrich IgY antibodies; Inhibition; Recombinant proteins; E. coli; S. aureus. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000200015 |
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| Ud-Din,Abu; Wahid,Syeda. |
| Shigellosis produces inflammatory reactions and ulceration on the intestinal epithelium followed by bloody or mucoid diarrhea. It is caused by enteroinvasive E. coli (EIEC) as well as any species of the genus Shigella, namely, S. dysenteriae, S. flexneri, S. boydii, and S. sonnei. This current species designation of Shigella does not specify genetic similarity. Shigella spp. could be easily differentiated from E. coli, but difficulties observed for the EIEC-Shigella differentiation as both show similar biochemical traits and can cause dysentery using the same mode of invasion. Sequencing of multiple housekeeping genes indicates that Shigella has derived on several different occasions via acquisition of the transferable forms of ancestral virulence plasmids... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diarrhea; E. coli; Shigella; Real-time PCR. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400002 |
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| Registros recuperados: 89 | |
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