| prevalence and risk factors associated with intestinal parasites in pigs in chongqing, china. | from 2007 to 2009, the prevalence of intestinal parasites was investigated in intensive and extensive pig farms in chongqing, china. a total of 2971 samples from both sexes and five age categories (breeding boars, breeding sows, fatteners, growers and weaners) were evaluated by standard methods for the presence of helminth ova and protozoan oocysts, cysts and/or trophozoites. of the 2971 pigs sampled, 362(12.18%) were infected with ascaris suum, 301(10.13%) with trichuris suis, 301(10.13%) with ... | 2011 | 21349561 |
| seroprevalence of toxoplasma gondii antibodies from slaughter pigs in chongqing, china. | toxoplasmosis is a disease caused by the protozoan toxoplasma gondii which infects most genera of warm-blooded animals, including humans. the objective of this investigation is to evaluate the seroprevalence of toxoplasmosis in pigs in chongqing municipality, southwest china. slaughterhouse pigs' serum samples collected from six different regions in chongqing were assayed for t. gondii antibodies by an indirect hemagglutination test. the average seroprevalence of t. gondii were found in 30.6% (2 ... | 2011 | 21887595 |
| phylogenetic analysis of mycoplasma suis isolates based on 16s rrna gene sequence in china. | to perform phylogenetic analysis of mycoplasma suis isolates derived from china to define the nature of this pathogen, nearly complete of 16s rrna genes from chongqing, sichuan, henan and guangdong isolates were amplified by pcr and sequenced. the four sequences from the blood samples in this study, with other 17 hemoplasmas sequences and related 3 mycoplasma sequences available in the genbank, were aligned using clustal x (version 1.83) sequences alignment program. maximum parsimony, neighbor-j ... | 2009 | 19590972 |
| epidemiological survey on escherichia coli o157 in chongqing and three-gorge reservoir areas of china. | prevalence, presence of virulence and adherence associated genes, genetic diversity, biochemical characteristics, and antibiotic susceptibility were determined for escherichia coli o157 isolated over 4 months in chongqing city and three-gorge reservoir areas. 11 isolates of e. coli o157 were isolated from 1504 samples and 7 of them are o157:h7 and 4 are o157:h? all o157:h7 isolates had eaea, ehxa, espa and tccp genes, but did not have stx1 and stx2. all o157:h? isolates did not have stx1, stx2, ... | 2008 | 18481192 |