Download the full article as a PDF file.
© 2015 Łukasz Zielonka, Ewa Jakimiuk, Kazimierz Obremski, Magdalena Gajęcka, Michał Dąbrowski, Maciej Gajęcki, published by National Veterinary Research Institute in Pulawy
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.