Authors
Iwona Radkowska
iwona.radkowska@izoo.krakow.pl
Department of Cattle Breeding, National Research Institute of Animal Production, Kraków, Poland
Eugeniusz Herbut
Department of Poultry Breeding, National Research Institute of Animal Production, Kraków, Poland
Adam Radkowski
Department of Grassland Management, Institute of Plant Production, University of Agriculture in Krakow, Kraków, Poland