1. Department of Animal Reproduction Biotechnology and Environmental Hygiene, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Janickiego 29, 71-270 Szczecin, Poland
2. Laboratory of Biostatistics, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Janickiego 29, 71-270 Szczecin, Poland
3. Institute of Marine and Environmental Sciences, Molecular Biology and Biotechnology Centre, Faculty of Physical, Mathematical and Natural Sciences, University of Szczecin, Wąska 13, 71-415 Szczecin, Poland
4. Department of Biological Sciences, Faculty of Physical Culture in Gorzow Wielkopolski, Poznan University of Physical Education, Estkowskiego 13, 66-400 Gorzów Wielkopolski, Poland
5. Department of Animal Anatomy, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Janickiego 33, 71-270 Szczecin, Poland
6. Department of Animal Environment Biology, Faculty of Animal Breeding, Bioengineering and Conservation, Warsaw University of Life Sciences, Ciszewskiego 8, 02-787 Warsaw, Poland