1. Department of Experimental Embryology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Postępu 36a, 05-552 Jastrzębiec, Poland
2. Department of Genetics and Animal Breeding, Faculty of Veterinary Medicine and Animal Sciences, Poznan University of Life Sciences, Wołyńska 33, 60-637 Poznań, Poland
3. Faculty of Biology, Medicine and Health, The University of Manchester, Oxford Road, Manchester, M13 9PT, United Kingdom