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Eubacterium coprostanoligenes and Methanoculleus identified as potential producers of metabolites that contribute to swine manure foaming.
Strom, Noah; Ma, Yiwei; Bi, Zheting; Andersen, Daniel; Trabue, Steve; Chen, Chi; Hu, Bo.
Afiliação
  • Strom N; Department of Bioproducts and Biosystems Engineering, University of Minnesota, Minneapolis, Minnesota, USA.
  • Ma Y; Department of Food Science and Nutrition, University of Minnesota, Minneapolis, Minnesota, USA.
  • Bi Z; Department of Food Science and Nutrition, University of Minnesota, Minneapolis, Minnesota, USA.
  • Andersen D; Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, Iowa, USA.
  • Trabue S; USDA-Agricultural Research Service, Ames, Iowa, USA.
  • Chen C; Department of Food Science and Nutrition, University of Minnesota, Minneapolis, Minnesota, USA.
  • Hu B; Department of Bioproducts and Biosystems Engineering, University of Minnesota, Minneapolis, Minnesota, USA.
J Appl Microbiol ; 132(4): 2906-2924, 2022 Apr.
Article em En | MEDLINE | ID: mdl-34820968
ABSTRACT

AIM:

Swine manure foaming is a major problem, causing damage to property, livestock, and people. Here, we identified the main chemicals and microbes that contribute to foaming. METHODS AND

RESULTS:

Foaming and non-foaming swine manure were sampled from farms in Iowa and Illinois. Targeted and untargeted metabolomics analyses identified chemical markers that differed between foaming and non-foaming manure and between manure layers. Microbial community analysis and metagenomics were performed on a subset of samples. Foam contained significantly higher levels of total bile acids and long chain fatty acids like palmitic, stearic and oleic acid than the other manure layers. Foam layers also had significantly higher levels of ubiquinone 9 and ubiquinone 10. The slurry layer of foaming samples contained more alanine, isoleucine/leucine, diacylglycerols (DG), phosphtatidylethanolamines, and vitamin K2, while ceramide was significantly increased in the slurry layer of non-foaming samples. Eubacterium coprostanoligenes and Methanoculleus were more abundant in foaming samples, and E. coprostanoligenes was significantly correlated with levels of DG. Genes involved in diacylglycerol biosynthesis and in the biosynthesis of branched-chain hydrophobic amino acids were overrepresented in foaming samples.

CONCLUSIONS:

A mechanism for manure foaming is hypothesized in which proliferation of Methanoculleus leads to excessive production of methane, while production of DG by E. coprostanoligenes and hydrophobic proteins by Methanosphaera stadtmanae facilitates bubble formation and stabilization. SIGNIFICANCE AND IMPACT OF STUDY While some chemical and biological treatments have been developed to treat swine manure foaming, its causes remain unknown. We identified key microbes and metabolites that correlate with foaming and point to possible roles of other factors like animal feed.
Assuntos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Methanomicrobiaceae / Esterco Tipo de estudo: Prognostic_studies Limite: Animals / Humans Idioma: En Ano de publicação: 2022 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Methanomicrobiaceae / Esterco Tipo de estudo: Prognostic_studies Limite: Animals / Humans Idioma: En Ano de publicação: 2022 Tipo de documento: Article