1. Institute of Animal Breeding and Biodiversity Conservation, Faculty of Biology, Animal Sciences and Bioeconomy , University of Life Sciences in Lublin , Akademicka 13, 20-950 Lublin , Poland
2. Department of Pig Breeding , National Research Institute of Animal Production , 32-083 Balice n. Kraków , Poland
3. Department of Animal Molecular Biology , National Research Institute of Animal Production , 32-083 Balice n. Kraków , Poland
4. Department of Animal Breeding and Product Quality Assessment , Poznań University of Life Sciences , Złotniki, Słoneczna 1, 62-002 Suchy Las , Poland
5. Institute of Biological Basis of Animal Production, Faculty of Biology, Animal Sciences and Bioeconomy , University of Life Sciences in Lublin , Akademicka 13, 20-950 Lublin , Poland