Authors
Elżbieta Sowula-Skrzyńska
Department of Production Systems and Environment, National Research Institute of Animal Production, Kraków, Poland
Anna Borecka
Department of Production Systems and Environment, National Research Institute of Animal Production, Kraków, Poland
Joanna Pawłowska
Department of Production Systems and Environment, National Research Institute of Animal Production, Kraków, Poland
Andrzej Kaczor
Department of Cattle Breeding, National Research Institute of Animal Production, Kraków, Poland