title: Effect of Storage Period on the Changes of Odorous Compound Concentrations and Bacterial Ecology for Identifying the Cause of Odor Production from Pig Slurry.
abstract: Odor from buildings where pigs are housed is generated by anaerobic fermentation of undigested materials in pig slurry stored for several weeks in pit. The objective of this study was to investigate the effect of storage period on the level of odorous compounds in pig slurry and on its bacterial community. A slurry sample (15 L) was taken from the pit of a finisher pig building and incubated in acryl chambers for six- weeks. Slurry for analysis was sampled every two-week. Levels of odorous compounds in the slurry sample were drastically changed after two weeks of storage period; levels of phenols and short chain fatty acids (SCFAs) were decreased (P<0.05), whereas indoles and branched-chain fatty acids (BCFAs) were increased (P<0.05). Among dominant bacteria, Bacteroides and Porphyromonadacese_uc_g revealed a strong positive correlation with the levels of phenols and SCFAs. Populations of AC160630_g, Acholeplasmatales_uc_g, Mollicutes_uc_g and Cloacamonas_f_uc_g positively correlated with indole and BCFAs content. Taken together, levels of odorous compounds were increased after two weeks of storage, possibly because of changes in the predominant bacterial groups to those that use protein as a carbon source in the hypo-carbohydrate conditions.
authors.affiliation: National Institute of Animal Science, Rural Development Administration, Wanju-Gun, Jeollabuk-Do, Republic of Korea.
authors.forename: Ok Hwa
authors.initials: OH
authors.lastname: Hwang
authors.affiliation: National Institute of Animal Science, Rural Development Administration, Wanju-Gun, Jeollabuk-Do, Republic of Korea.
authors.forename: Sung Back
authors.initials: SB
authors.lastname: Cho
authors.affiliation: National Institute of Animal Science, Rural Development Administration, Wanju-Gun, Jeollabuk-Do, Republic of Korea.
authors.forename: Deug Woo
authors.initials: DW
authors.lastname: Han
authors.affiliation: National Institute of Animal Science, Rural Development Administration, Wanju-Gun, Jeollabuk-Do, Republic of Korea.
authors.forename: Sang Ryoung
authors.initials: SR
authors.lastname: Lee
authors.affiliation: National Institute of Animal Science, Rural Development Administration, Wanju-Gun, Jeollabuk-Do, Republic of Korea.
authors.forename: Jeong Hoon
authors.initials: JH
authors.lastname: Kwag
authors.affiliation: Department of Food Science and Technology, Sejong University, Seoul, Republic of Korea.
authors.forename: Sung Kwon
authors.initials: SK
authors.lastname: Park
mesh_terms: D000693:Anaerobiosis; D000822:Animal Husbandry; D000818:Animals; D001419:Bacteria / Q000145:classification / Q000235:genetics / Q000378:metabolism*; D005232:Fatty Acids, Volatile / Q000032:analysis / Q000378:metabolism; D005285:Fermentation; D007211:Indoles / Q000032:analysis / Q000378:metabolism; D008372:Manure / Q000382:microbiology*; D009812:Odorants / Q000032:analysis*; D010636:Phenols / Q000032:analysis / Q000378:metabolism; D034421:Sus scrofa; D055549:Volatile Organic Compounds / Q000032:analysis / Q000378:metabolism
chemical_list: D005232:Fatty Acids, Volatile; D007211:Indoles; D008372:Manure; D010636:Phenols; D055549:Volatile Organic Compounds