Effects of Hops Treatment on Nitrogen Retention, Volatile Fatty Acid Accumulations, and Select Microbial Populations of Composting Poultry Litter Intended for Use as a Ruminant Feedstuff

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:33:28Z
Fecha de publicación2023-01-01
ResumenPoultry litter is a valuable crude protein feedstuff for ruminants, but it must be treated to kill pathogens before feeding. Composting effectively kills pathogens, but it risks losing ammonia to volatilization or leaching during degradation of uric acid and urea. Hops bitter acids also exert antimicrobial activity against certain pathogenic and nitrogen-degrading microbes. Consequently, the present studies were conducted to test if adding bitter acid-rich hop preparations to simulated poultry litter composts may improve nitrogen retention while simultaneously improving pathogen killing. Results from an initial study, testing doses of Chinook or Galena hops preparations designed to each deliver 79 ppm hops beta-acid, revealed that, after nine days simulated composting of wood chip litter, ammonia concentrations were 14\% lower (p < 0.05) in Chinook-treated composts than untreated composts (13.4 +/- 1.06 mu mol/g). Conversely, urea concentrations were 55\% lower (p < 0.05) in Galena-treated than untreated composts (6.2 +/- 1.72 mu mol/g). Uric acid accumulations were unaffected by hops treatments in this study but were higher (p < 0.05) after three days than after zero, six, or nine days of composting. In follow-up studies, Chinook or Galena hops treatments (delivering 2042 or 6126 ppm of beta-acid, respectively) for simulated composts (14 days) of wood chip litter alone or mixed 3:1 with ground Bluestem hay (Andropogon gerardii) revealed that these higher dosages had little effect on ammonia, urea, or uric acid accumulations when compared to untreated composts. Volatile fatty acid accumulations measured in these later studies were affected by the hops treatments, with butyrate accumulations being lower after 14 days in hops-treated composts than in untreated compost. In all studies, beneficial effects of Galena or Chinook hops treatments were not observed on the antimicrobial activity of the simulated composts, with composting by itself decreasing (p < 0.05) counts of select microbial populations by more than 2.5 log(10) colony forming units/g compost dry matter. Thus, while hops treatments had little effect on pathogen control or nitrogen retention within the composted litter, they did lessen accumulations of butyrate, which may prevent adverse effects of this fatty acid on palatability of litter fed to ruminants.es_ES
Doihttps://doi.org/10.3390/microorganisms11040839es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/5298
Idiomaenes_ES
EditorialMDPIes_ES
RelaciónMicroorganismses_ES
URL relacionadohttps://doi.org/10.3390/microorganisms11040839es_ES
DerechosAcceso abierto (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_abf2es_ES
FuenteMicroorganisms
Palabra clavecompostinges_ES
Palabra clavecrude proteines_ES
Palabra clavehopses_ES
Palabra clavemicrobial pathogenses_ES
Palabra clavepoultry litteres_ES
TítuloEffects of Hops Treatment on Nitrogen Retention, Volatile Fatty Acid Accumulations, and Select Microbial Populations of Composting Poultry Litter Intended for Use as a Ruminant Feedstuffes_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorCastillo-Castillo, Yamicela
AutorArzola-Alvarez, Claudio
AutorFonseca, Mozart
AutorSalinas-Chavira, Jaime
AutorOntiveros-Magadan, Marina
AutorHume, Michael E.
AutorAnderson, Robin C.
AutorFlythe, Michael D.
AutorByrd, James Allen
AutorRuiz-Barrera, Oscar
AutorCastillo-Castillo, Yamicelaes_ES
AutorArzola-Alvarez, Claudioes_ES
AutorFonseca, Mozartes_ES
AutorSalinas-Chavira, Jaimees_ES
AutorOntiveros-Magadan, Marinaes_ES
AutorHume, Michael E.es_ES
AutorAnderson, Robin C.es_ES
AutorFlythe, Michael D.es_ES
AutorByrd, James Allenes_ES
AutorRuiz-Barrera, Oscares_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número4es_ES
URL relacionadahttps://doi.org/10.3390/microorganisms11040839
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen11es_ES

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