Prof. Ewa Łukaszewicz 

Department of Poultry Breeding 
Institute of Animal Breeding 
Wroclaw University of Life and Environmental Sciences 

Chelmonskiego 38c 
51-630 Wroclaw 
Poland 
tel. 071 3205-774 
fax: 071 3205776
e-mail: ewa.lukaszewicz@up.wroc.pl