Wystepowanie bakterii chorobotworczych w tuszach wolowych i zwiazane z tym zagrozenie zdrowia konsumentow

• Autorzy: Wieczorek K , Denis E. , Osek J.

Warianty tytułu

EN

Occurrence of pathogenic bacteria in bovine carcasses and the related health threat to consumers

• Języki publikacji: PL

Abstrakty

EN

The aim of the study was to investigate the prevalence of human pathogenic bacteria Salmonella, L. monocytogenes, Campylobacter and verotoxigenic E. coli (VTEC) in bovine carcasses and to assess the related health threat to consumer. The examined material consisted of 276 samples collected as swabs with sterile sponges from carcasses directly after evisceration in slaughterhouses, from 400 cm² of the brisket area. The samples were analyzed at a laboratory for the identification of the four above-mentioned pathogens by slightly modified ISO methods and molecular techniques. The bovine carcasses were mostly contaminated with VTEC (30 positive samples, 10.9%) as found by the amplification of the Shiga toxin stx gene by the PCR technique. The other microorganisms were identified in smaller proportions of the carcasses. Eight samples (2.9%) proved positive for Campylobacter spp., 7 (2.5%) for L. monocytogenes, and 5 (1.8%) were contaminated with Salmonella spp. The influence of the animals’ age on the carcass contamination was also analyzed: it was noted that the majority of isolates were present in samples recovered from cattle over 6 years old. Moreover, the influence of seasonality on the occurrence of the pathogens in the carcasses was tested, and it was demonstrated that the majority of L. monocytogenes were isolated in October and November. In the case of VTEC, most of the bacteria were isolated from the carcasses in October, November and December (83.3% of the isolates) whereas no VTEC was found in winter (January-March) and spring (April-June). Most of the Salmonella spp. positive samples (4 out of 5 carcasses) were found in the period of May-July. No seasonality was found in the case of Campylobacter spp. present in the bovine carcasses tested. The results of the study show that bovine carcasses are quite frequently contaminated with pathogenic microorganisms which may be a source of food-borne diseases. Taking this into account, proper hygiene throughout the entire food chain, especially at the stage of carcass processing in slaughterhouses, is necessary to protect the health of consumers.

Słowa kluczowe

PL

zywnosc; mieso wolowe; tusze wolowe; zanieczyszczenia bakteryjne; bakterie chorobotworcze; Campylobacter; Salmonella; Listeria monocytogenes; Escherichia coli; szczepy shigatoksyczne; wystepowanie; sezonowosc; identyfikacja; konsumenci; zagrozenia zdrowia

• Wydawca: -
• Czasopismo: Medycyna Weterynaryjna
• Rocznik: 2010
• Tom: 66
• Numer: 01
• Strony: 54-58
• Opis fizyczny: s.54-58,tab.,bibliogr.

Twórcy

autor

Wieczorek K

• Panstwowy Instytut Weterynaryjny - Panstwowy Instytut Badawczy, Al.Partyzantow 57, 24-100 Pulawy

autor

Denis E.

autor

Osek J.

Bibliografia

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