Presently, the biological and physical variable of microflora in pig manure is not clear yet. In this study, denaturing gradient gel electrophoresis was optimized in the running parameters including level electrophoresis, electrophoresis time and dying time, respectively. The optimized DGGE method was subsequently performed to analyze the diversity of the manure samples from 5 main running scenorios of 5 pig farms distributed along Jialing River. And then, bacterial 16S rDNA clone library of corresponding m...