fascioliasis problems in ruminants in rio grande do sul, brazil.the economic importance of fascioliasis in the livestock industry in the state of rio grande do sul was assessed through the federal meat inspection at major slaughter houses. annual average rates of the livers condemned by fasciola hepatica infection at the houses in the state have been recorded as 12-13% in cattle and 7% in sheep, respectively. many farms in the provinces of the frontier regions of brazil with uruguay are contaminated with f. hepatica and acute fascioliasis with a high mortali ...19826891851
acanthamoeba spp. and bacterial contamination in contact lens storage cases and the relationship to user cases for contact lenses receive microbiota from the environment, body, and eye, which can form biofilms. these biofilms, in addition to causing discomfort and cloudy vision, can cause local irritation, facilitate the adherence of microorganisms, and lead to infection. the objective of this study was to evaluate the presence of bacteria and acanthamoeba spp. in the biofilm and solutions in contact lens storage cases, and to assess their relationships to the habits of contact lens wearers ...200818661282
prevalence of toxoplasma gondii and neospora caninum infections in sheep from federal district, central region of brazil.serum samples from 1028 sheep were collected from 32 herds within federal district, in the central region of brazil. the samples were examined by indirect fluorescent antibody test (ifat) using sera diluted 1:64 and 1:50 as cut-off values for the detection of antibodies against toxoplasma gondii and neospora caninum, respectively. the observed prevalence for t. gondii infection was 38.22% (26.81%<ci 0.95<49.62%), and the titers ranged from 64 to 65536. the observed prevalence for n. caninum infe ...200918726165
genetic factors of sheep affecting gastrointestinal parasite infections in the distrito federal, brazil.three sheep farms were used in the distrito federal, central brazil, to study the occurrence of parasites in the feces. a total of 1798 collections were taken over the period of a year. a total of 1205 were taken in santa inês breed (si) in all three farms, 323 in bergamasca (berg), 54 in ile de france, 49 in ilexsi, 103 in morada nova (mn) and 64 in texelxsi, these last five groups being on a single farm. the animals were drenched soon after weaning and feces collected every 3 weeks to calculat ...200919837513
use of heat tolerance traits in discriminating between groups of sheep in central brazil.the animal and its environment make up an integrated system, where each acts on the other. tropical regions are characterized by high levels of solar radiation and environmental temperature which may adversely affect animal production. this study carries out a multivariate analysis of physical and physiological traits in sheep in the federal district of brazil to test the ability to separate groups of animals and determine which traits are most important in the adaptation of animal to heat stres ...201020652407
anti-leptospira sp. agglutinins in ewes in the federal district, define the prevalence of anti-leptospira sp. agglutinins in ewes in the federal district, brazil, serum samples from 157 ewes were tested for antibodies against serovars of leptospira sp. by the microscopic agglutination test. antibodies were detected in three flocks in a prevalence of 3% (95% ci = 0.4%-5.7%). considering that sheep and cattle were raised together, the lack of sanitary control could represent a risk to cattle production, which is the most important activity in the centre-west ...201120703809
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