The combination of zinc compounds and acidic pH limits aerobic growth of a Salmonella typhimurium poultry marker strain in rich and minimal media.
The objective of the present study was to examine the combined effects of zinc compounds with different acidic pH levels on the aerobic growth of a S. typhimurium poultry isolate in either rich or minimal media. When overall main effects of pH levels of medium or concentrations of Zn compounds were compared, growth rates of the S. typhimurium poultry isolate were significantly (p < 0.05) decreased by stepwise increase of pH levels of medium (pH 4, 5, 6, and 7) or concentrations (0.67, 3.35, and 6.03%) of Zn compounds (Zn acetate and Zn sulfate). In general growth rates of S. typhimurium poultry isolate appeared to be more reduced by Zn acetate than by Zn sulfate and more reduced in minimal media compared to rich media.
Park
S Y
SY
Department of Poultry Science, Texas A & M University, College Station, Texas 77843, USA.
Woodward
C L
CL
Birkhold
S G
SG
Kubena
L F
LF
Nisbet
D J
DJ
Ricke
S C
SC
D000818:Animals; D015169:Colony Count, Microbial; D003470:Culture Media; D006863:Hydrogen-Ion Concentration; D011200:Poultry / Q000382:microbiology*; D012486:Salmonella typhimurium / Q000187:drug effects / Q000254:growth & development*; D017967:Zinc Compounds / Q000494:pharmacology*
D003470:Culture Media; D017967:Zinc Compounds