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Article History

First Online: 3 January 2020

Compliance with Ethical Standards

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: The authors declare that they have no conflict of interest.

: The experiment was performed in cooperation with our colleagues at the National Agricultural and Food Centre (NAFC, Nitra, Slovakia). Institutional and national guidelines for the care and use of animals were followed appropriately, and all experimental procedures were approved by the Slovak State Veterinary and Food Administration and Ethics Committees of both (permission code: SK CH 17016 and SK U 18016). All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. This article does not contain any studies with human participants performed by any of the authors.