title: Enumeration and isolation of anaerobic microbiota of piggery wastes.
abstract: Media for enumeration of the microbiota of anaerobically stored piggery wastes were tested. Highest colony counts were obtained with 80 to 100% farm slurry supernatant included in the anaerobic roll tube media. Colony counts with these media numbered 2 X 10(9) to 12 X 10(9)/g (wet weight), which represents about 20% of the microscopic counts. Lower percentages of slurry supernatant in the media gave lower colony counts. Addition of glucose, cellobiose, and starch or of Trypticase to media with 20% slurry supernatant did not increase colony counts. Higher values were obtained when hemicellulose preparations were added to these media. Incubation at 25 degrees C gave the highest numbers. Incubation at 15 to 37 degrees C gave counts of about 70 and 10%, respectively, of those at 25 degrees C. Of the colonies picked for isolation, about 20% were obtained in pure culture. The isolates apparently belonged to the genera Peptococcus, Ruminococcus, Peptococcus, Ruminococcus, Pepostreptococcus, and Bacteroides.
mesh_terms: D000693:Anaerobiosis; D000818:Animals; D001419:Bacteria / Q000302:isolation & purification*; D003470:Culture Media; D012722:Sewage; D013045:Species Specificity; D013552:Swine; D013696:Temperature; D014871:Water Microbiology
chemical_list: D003470:Culture Media; D012722:Sewage