Experimental Unit Station of National Research Institute of Animal Production in Kołuda Wielka, Waterfowl Genetic Resource Station Dworzyska, Kórnik, Poland
Anita Dobek
Department of Mathematical and Statistical Methods, Poznań University of Life Sciences, Poznań, Poland
Krzysztof Moliński
Department of Mathematical and Statistical Methods, Poznań University of Life Sciences, Poznań, Poland