1Department of Animal Reproduction Biotechnology and Environmental Hygiene,
West Pomeranian University of Technology in Szczecin, Dr Judyma 6, 71-466 Szczecin, Poland
2Department of Poultry and Ornamental Bird Breeding, West Pomeranian University of Technology in Szczecin,
Dr Judyma 20, 71-466 Szczecin, Poland
3West Pomeranian Research Centre, Institute of Technology and Life Sciences in Falenty,
Czesława 9, 71-504 Szczecin, Poland
Pol. J. Environ. Stud. 2012;21(1):193–199