Concentration of methanogenic bacteria in feces

Range swine 10^8: human 10^7: cattle 10^6: rabbit 10^4 bacteria/g dry weight
Organism Mammals
Reference Sorlini, C., Brusa, T., Ranalli, G. et al. Quantitative determination of methanogenic bacteria in the feces of different mammals, Current Microbiology, January 1988, Volume 17, Issue 1, pp 33–36 doi: 10.1007/BF01568816
Method P.33 right column bottom paragraph: "Determination of the number of methanogenic bacteria and anaerobic heterotrophic bacteria: The bacteria count was done in quintuple by a multiple tube, most probable number (MPN) technique [ref 3]. At the end of the incubation period the cultures of methanogenic bacteria were observed with a fluorescence microscope, and the head space gas of each tube was separately analyzed by gas chromatography. The presence of methanogenic bacteria was shown by the presence of methane in the analyzed gas and of fluorescent cells in the culture."
Comments Abstract: "In this research on fresh human, cattle, swine, and rabbit feces, methanogenic bacteria were found in all samples examined, at the following concentrations per gram dry weight: swine, 10^8 human, 10^7 cattle, 10^6 and rabbit, 10^4."
Entered by Uri M
ID 112898