The Effect Of Adding Lime Nitrogen To Cattle Manure Forced Aerated Static Composting On Killing Escherichia Coli And The Determination Of Related Indicators

Escherichia coli normally does not cause the animal incidence, but some specific serotypes of E. coli pathogenic to humans and animals. In this experiment,the scene cows fresh fecal samples collected, E. coli were isolated, biochemical identification, animal pathogenicity test and serotype identification with special serotypes of pathogenic E. coli, and then through the collection with different serumE. coli cow manure on-site aerated static compost. Add lime nitrogen in the compost, to study the antibacterial activity of different serotypes of bovine pathogenic E. coli. Throughout the study and the results are as follows:1.69suspected E. coli isolated from the header Houjiaying dairy77apparently healthy adult lactating Holstein dairy cow feces,12is a strong pathogenic E. coli were identified, accounting17.4%of the separation of bacteria, while12of highly pathogenic Escherichia coli anti-O serum identification, belonging to7serotypes accounted for25.0%of the stereotypes strains,8.3%,16.7%,8.3%,8.3%,8.3%,25.0%.2.078,06,09,098,01,08,01497kinds of serotypes of E. coli cow feces collected with on-site aerated static compost, composting set to control group and add2%lime nitrogen test group,63d compost. The results showed that:the experimental group supplemented with2%lime nitrogen compost26d temperature is above600C and maintained for9days, The compost21d have not detected E. coli and compost the end of the GI value of108.10±2.44, but did not add0%group of lime nitrogen in the compost9d temperature began to rise, reaching more than50OC, E. coli is not detected when the compost28d, the GI maximum value of90.40±2.19, two sets of pH range between8and9.0.3. composting is a microbial-mediated biochemical processes, so the composting process, carbon and nitrogen changes could reflect the composting process of composting. two groups nitrogen content with the compost upward trend in the text, but the2%increase in nitrogen content of the most obvious; group0%and2%of the total carbon content showed a downward trend, while adding2%lime nitrogen in the experimental group decreased most significantly, with lime nitrogen, the nitrogen content.