The Zelazna was developed at the Zelazna experiment far of Warsaw Agricultural University.
They belong to the Polish Lowland group and are found throughout Poland. They were developed from Polish Merino crossed with Leicester Longwool and Lowicz.
References
Mason, I.L. 1996. A World Dictionary of Livestock Breeds, Types and Varieties. Fourth
Edition. C.A.B International. 273 pp.
