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Effect of housing system and age of laying hens on eggshell quality, microbial contamination, and penetration of microorganisms into eggs

Author

Listed:
  • Jana Vlčková

    (Institute of Animal Science, Prague-Uhříněves, Czech Republic
    Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Eva Tůmová

    (Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Mohamed Ketta

    (Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Michaela Englmaierová

    (Institute of Animal Science, Prague-Uhříněves, Czech Republic)

  • Darina Chodová

    (Czech University of Life Sciences Prague, Prague, Czech Republic)

Abstract

Hens of the laying hybrid ISA Brown were used in the study with the objective to evaluate eggshell quality, microbial contamination of eggshells, and penetration of microorganisms into the egg content in different housing systems (enriched cage: 60 hens, 10 hens per cage, 750 cm2 per hen vs free range: 60 hens, 9 hens per m2) and at different hen ages (26 vs 51 weeks) during storage time (0, 2, 7, 14, and 21 days). A significant interaction between the housing system and age was observed in egg weight and most of eggshell quality measurements. However, microbial contamination and penetration were affected mostly by the housing system and storage time. The numbers of Escherichia coli (P < 0.001, 4.51 vs 2.75 log cfu/eggshell) and Enterococcus (P < 0.001, 2.56 vs 1.11 log cfu/eggshell), and the total number of microorganisms (P < 0.001, 5.04 vs. 3.65 log cfu/eggshell) were higher in free range eggs compared to enriched cage eggs, respectively. The counts of Escherichia coli (P < 0.001, 4.23 vs 2.91 log cfu/eggshell) and Enterococcus (P < 0.001, 2.31 vs 1.27 log cfu/eggshell) decreased with storage time. A positive correlation between the total number of pores and penetration of Escherichia coli in both housing systems was observed in the albumen. It can be concluded that the housing system and age of laying hens significantly affected eggshell quality. Microbial contamination presumably affects the penetration of microorganisms. The correlation between the number of pores and penetration is assumed to be affected by the microbial species.

Suggested Citation

  • Jana Vlčková & Eva Tůmová & Mohamed Ketta & Michaela Englmaierová & Darina Chodová, 2018. "Effect of housing system and age of laying hens on eggshell quality, microbial contamination, and penetration of microorganisms into eggs," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 63(2), pages 51-60.
    • Handle: RePEc:caa:jnlcjs:v:63:y:2018:i:2:id:77-2017-cjas
    DOI: 10.17221/77/2017-CJAS
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    References listed on IDEAS

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    1. M. Ketta & E. Tůmová, 2016. "Eggshell structure, measurements, and quality-affecting factors in laying hens: a review," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 61(7), pages 299-309.
    2. J. Svobodová & E. Tůmová & E. Popelářová & D. Chodová, 2015. "Effect of light colour on egg production and egg contamination," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 60(12), pages 550-556.
    3. M. Vučemilo & B. Vinković & K. Matković & I. Štoković & S. Jakšić & S. Radović & K. Granić & Đ. Stubičan, 2010. "The influence of housing systems on the air quality and bacterial eggshell contamination of table eggs," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 55(6), pages 243-249.
    4. M. Skřivan & M. Englmaierová & E. Skřivanová & I. Bubancová, 2015. "Increase in lutein and zeaxanthin content in the eggs of hens fed marigold flower extract," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 60(3), pages 87-96.
    5. E. Tůmová & R.M. Gous & N. Tyler, 2014. "Effect of hen age, environmental temperature, and oviposition time on egg shell quality and egg shell and serum mineral contents in laying and broiler breeder hens," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 59(9), pages 435-443.
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