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Effects in air-exposed corn silage of medium chain fatty acids on select spoilage microbes, zoonotic pathogens, and in vitro rumen fermentation.
Arzola-Alvarez, Claudio; Ruiz-Barrera, Oscar; Castillo-Castillo, Yamicela; Ontiveros, Marina; Fonseca, Mozart; Jones, Barbara W; Smith, William B; Hume, Michael E; Harvey, Roger; Poole, Toni L; Anderson, Robin C; Arzola-Rubio, Alejandro; Salinas-Chavira, Jaime.
Afiliación
  • Arzola-Alvarez C; Autonomous University of Chihuahua, Chihuahua, Mexico.
  • Ruiz-Barrera O; Autonomous University of Chihuahua, Chihuahua, Mexico.
  • Castillo-Castillo Y; Autonomous University of Chihuahua, Chihuahua, Mexico.
  • Ontiveros M; Autonomous University of Ciudad Juarez, Ciudad Juarez, Mexico.
  • Fonseca M; Department of Agriculture, Nutrition and Veterinary Sciences, University of Nevada, Reno, Nevada, USA.
  • Jones BW; Department of Animal Science and Veterinary Technology, Tarleton State University, Stephenville, Texas, USA.
  • Smith WB; Texas A&M AgriLife Research, Stephenville, Texas, USA.
  • Hume ME; Department of Animal Science and Veterinary Technology, Tarleton State University, Stephenville, Texas, USA.
  • Harvey R; Food and Feed Safety Research Unit, United States Department of Agriculture, Agricultural Research Service, College Station, Texas, USA.
  • Poole TL; Food and Feed Safety Research Unit, United States Department of Agriculture, Agricultural Research Service, College Station, Texas, USA.
  • Anderson RC; Food and Feed Safety Research Unit, United States Department of Agriculture, Agricultural Research Service, College Station, Texas, USA.
  • Arzola-Rubio A; Food and Feed Safety Research Unit, United States Department of Agriculture, Agricultural Research Service, College Station, Texas, USA.
  • Salinas-Chavira J; Autonomous University of Chihuahua, Chihuahua, Mexico.
J Environ Sci Health B ; 58(1): 45-50, 2023.
Article en En | MEDLINE | ID: mdl-36661390
ABSTRACT
Medium chain fatty acid (MCFA) treatment (0.75% C6, hexanoic; C8, octanoic; C10, decanoic; or equal proportion mixtures of C6C8C10C12 or C8C10/g; C12 = dodecanoic acid) of aerobically-exposed corn silage on spoilage and pathogenic microbes and rumen fermentation were evaluated in vitro. After 24 h aerobic incubation (37 °C), microbial enumeration revealed 3 log10 colony-forming units (CFU)/g fewer (P = 0.03) wild-type yeast and molds in C8C10-treated silage than controls. Compared with controls, wild-type enterococci decreased (P < 0.01) in all treatments except the C6C8C10C12 mixture; lactic acid bacteria were decreased (P < 0.01) in all treatments except C6 and the C6C8C10C12 mixture. Total aerobes and inoculated Staphylococcus aureus or Listeria monocytogenes were unaffected by treatment (P > 0.05). Anaerobic incubation (24 h at 39 °C) of ruminal fluid (10 mL) with 0.02 g overnight air-exposed MCFA-treated corn silage revealed higher hydrogen accumulations (P = 0.03) with the C8C10 mixture than controls. Methane, acetate, propionate, butyrate, or estimates of fermented hexose were unaffected. Acetatepropionate ratios were higher (P < 0.01) and fermentation efficiencies were marginally lower (P < 0.01) with C8- or C8C10-treated silage than controls. Further research is warranted to optimize treatments to target unwanted microbes without adversely affecting beneficial microbes.
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Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Rumen / Ensilaje Límite: Animals Idioma: En Revista: J Environ Sci Health B Año: 2023 Tipo del documento: Article País de afiliación: México

Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Rumen / Ensilaje Límite: Animals Idioma: En Revista: J Environ Sci Health B Año: 2023 Tipo del documento: Article País de afiliación: México