1. Department of Animal Breeding, Institute of Animal Science , Warsaw University of Life Sciences , 8 Ciszewskiego Str., 02-786 Warsaw , Poland
2. Department of Grassland Farming , Institute of Technology and Life Sciences , Falenty, 3 Aleja Hrabska Str., 05-090 Raszyn , Poland
3. Department of Biotechnology and Nutrigenomics , Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences , Jastrzębiec, 36A Postępu Str, 05-552 Magdalenka , Poland