1. Department of Animal Breeding and Product Quality Assessment , Poznań University of Life Sciences , Złotniki, 1 Słoneczna Street , Suchy Las , Poland
2. Department of Animal Nutrition , Poznań University of Life Sciences , 33 Wołyńska Street , Poznań , Poland
3. Department of Grassland and Natural Landscape Sciences , Poznań University of Life Sciences , 11 Dojazd Street , Poznań , Poland