Resumen

CORPAS-IGUARAN, EDUARDO JAVID  y  ARCILA-HENAO, JUAN SEBASTIÁN. RECOUNT OF COLIFORMS AND Escherichia coli IN CATTLE CARCASSES UNDER PHYSICAL AND CHEMICAL TREATMENTS. Rev.Bio.Agro [online]. 2014, vol.12, n.2, pp.125-133. ISSN 1692-3561.

We evaluated the recount of total coliforms and Escherichia coli in cattle carcasses submitted to different treatments which included combinations of the methods of washing, disinfecting and vaporizing, using the completely randomized design of a factor with 3 replications. Sampling was carried out by swab surface in three different areas of the simple. (back, chest and rump), which were subsequently analyzed by the plate count method. When applying sequentially microbial removal methods, was observed the progressive decrease in total coliform counts and E. coli, and variability of the data, mainly in treatments C, D y E. Multiple contrasts proof of Friedman revealed the no statistical differences between counts of the treatments C and E in the sample 2, indicating the inefficacy of vaporization as coadjuvant of the acidification to decrease counting of the microorganisms of study. Comparison tests on independent samples showed identical results to the Friedman test, except for counting of E. coli between treatments D y E, suggesting that vaporization has significant effect to enhance the diminution of count of microorganisms on carcasses.

Palabras clave : Cattle; Control Agents for Microorganisms; Food Safety; Organic Acids; Steam.

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