occurrence of plesiomonas shigelloides in water environments of rio de janeiro city.fresh and salt water samples analyzed in rio de janeiro city showed the presence of plesiomonas shigelloides. forty-six strains were isolated from both environments. a high incidence of p. shigelloides was achieved in polluted fresh and salt waters as well as in samples from non-polluted streams. p. shigelloides isolates had biochemical characteristics similar to those already described in the literature. none of the isolates analyzed produced enterotoxin in the suckling mouse assay. hemolytic a ...19958524069
virulent and avirulent strains of group b streptococci from rio de janeiro, brazil: relationship between differences in surface hydrophobicity, sialic acid content and macrophage interaction. 199910446008
resistance profile of bacteroides fragilis isolated in brazil. do they shelter the cfia gene?the epidemiology of antimicrobial resistance of clinical isolates and human intestinal strains of bacteroides fragilis has assumed great importance in the last few years since this microorganism, like other members of the b. fragilis group, can be responsible for the spread of resistance determinants. it is possible that the presence of b. fragilis in polluted aquatic environments might contribute to the spread of resistance. the antimicrobial resistance profile of 44 clinical b. fragilis strain ...200010747824
phenotypic properties, drug susceptibility and genetic relatedness of stenotrophomonas maltophilia clinical strains from seven hospitals in rio de janeiro, investigate phenotypic aspects including biotyping, drug susceptibility and production of extracellular enzymes and genetic diversity of stenotrophomonas maltophilia clinical strains obtained from seven hospitals in rio de janeiro, brazil.200415078532
[development, survival and distribution of infective larvae of ruminants gastrointestinal nematodes, in the dry season of the "fluminense lowland", state of rio de janeiro, brazil].with the objective of studying the development, survival and the distribution of the infective larvae of gastrointestinal nematodes of domestic ruminant, in the period characterized as dry for the area of the fluminense lowland, rj, the artificial contamination of the pasture was accomplished with fecal samples of bovine, caprine and ovine, naturally infected. one week after, began the sampling of the faecal masses and of the grass around the same ones, with biweekly repetitions. larvae of the g ...200516229751
[natural infection with species of the genus eimeria in small ruminant raised in two municipalities of the state rio de janeiro].in order to identify eimerian species, verify their frequencies and intensity of infection, besides the dynamics of environmental contamination by oocysts during two years, fecal samples were collected from alpine goats and their cross-breeding and santa inês sheep, raised separated in mountainous region of the state of rio de janeiro. a centrifuge-flotation method was used to obtain the number of oocysts per gram of feces (oopg). nine species of eimeria were identified in goats and ten in sheep ...200516229752
characterization of staphylococcus aureus isolates from buffalo, bovine, ovine, and caprine milk samples collected in rio de janeiro state, brazil.eighty-four staphylococcal isolates were obtained from milk samples from cows, sheep, goats, and buffalo with subclinical mastitis and from colonization samples from ostriches. the animals were hosted in 18 small dairy herds and an ostrich breeding located in 10 municipalities of the state of rio de janeiro, brazil. thirty isolates were identified as staphylococcus aureus by biochemical and molecular techniques and were comparatively characterized by phenotypic and genotypic methods. the molecul ...200717449696
identification of leptospira spp. carriers among seroreactive goats and sheep by polymerase chain reaction.few studies were conducted on the diagnosis and control of small ruminants' leptospirosis. thirteen goat herds and seven sheep flocks located in the state of rio de janeiro, brazil, were screened for leptospirosis. from the three herds and three flocks with greatest seroreactivity by mat (microscopic agglutination test), 19 and 40 seropositive goats and sheep, respectively, were selected, and urine samples were collected for bacteriology and pcr. for both species of animals, the most prevalent r ...200919232418
anthelmintic efficacy and management practices in sheep farms from the state of rio de janeiro, brazil.anthelmintic resistance in parasites maybe a consequence of over-exposing populations of parasites to drugs or from the commerce/transit of animals harboring resistant parasites. knowledge of the sensitivity of nematodes to anthelmintics is essential to establish an efficient integrated program of parasite control. in brazil, producers rely on technology transfer from field professionals and non-technical labor for new management strategies of parasite control. the aim of this work was to determ ...201020356679
molecular characterization of cryptosporidium in brazilian sheep.feces were collected from 125 sheep between january and december 2007, on ten farms in the state of rio de janeiro, brazil, and examined for the presence of cryptosporidium. ninety samples were collected from lambs 2 to 6 months of age, and 35 were from sheep over 12 months of age. all samples were subjected to molecular analysis by polymerase chain reaction (nested pcr) in two steps of the ssu rrna. two samples (1.6%) from the lambs were positive, and after sequencing were identified as cryptos ...201021075526
leptospirosis as the most frequent infectious disease impairing productivity in small ruminants in rio de janeiro, brazil.despite the importance of small ruminants breeding in developing countries, milk/meat productivity remains unsatisfactory. infectious diseases, such as leptospirosis, brucellosis, and small ruminant lentiviruses (srlvs), contribute to this scenario. the objective of the present study was to determine the role of each of these diseases in the productivity of small ruminants breeding in rio de janeiro, brazil. in goats, 343 samples were tested for leptospirosis, 560 for brucella abortus, and 506 f ...201121898182
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