PMID: 1181559Jan 1, 1975Paper

[Best methods for the detection of staphylococci in feed mixture. III. Effect of sample preincubation on the most probable number (MPN) of staphylococci in 1 gram of feed].

Polskie archiwum weterynaryjne
B Borkowska-Opacka, M Truszczyński

Abstract

The aim of this work was to determine whether 2-hour preincubation of a feed sample in physiological saline at 37 degrees, being in force in this country according to Polish norm 58/R-64785, exerts a favourable effect on the MPN of staphylococci detected in 1 g feed. On the base of the results obtained it is suggested that, contrary to this norm, it is more favourably not to use the preincubation for the detection of staphylococci in feed mixtures because the MPN of staphylococci found by statistical analysis in 1 g of the preincubated mixture is significantly lower than that obtained without preincubation.

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