1. Department of Horse Breeding , National Research Institute of Animal Production , 32-083 Balice n. Kraków , Poland
2. Department of Animal Genetics and Conservation , Warsaw University of Life Sciences , Nowoursynowska 166, 02-787 Warszawa , Poland
3. Department of Poultry Breeding , National Research Institute of Animal Production , 32-083 Balice n. Kraków , Poland
4. Department of Sheep and Goat Breeding , National Research Institute of Animal Production , 32-083 Balice n. Kraków , Poland
5. Department of Cattle Breeding , National Research Institute of Animal Production , 32-083 Balice n. Kraków , Poland
6. Department of Animal Nutrition and Feed Science , National Research Institute of Animal Production , 32-083 Balice n. Kraków , Poland
7. Department of Pig Breeding , National Research Institute of Animal Production , 32-083 Balice n. Kraków , Poland