Editorial Committee:

Editor-in-chief

Prof. dr hab. Zbigniew Sobek Poznań University of Life Sciences Poznań, Poland

Deputy Editor-in-Chief

Dr hab. Marcin Pszczoła Poznań University of Life Sciences Poznań, Poland

Topical editors

Quality of animal-origin products: Prof. dr hab. Joanna Barłowska University of Life Sciences in Lublin Lublin, Poland Animal nutrition: Dr hab. Wioletta Biel West Pomeanian Univerity of Technology in Szczecin Szczecin, Poland Prof. dr hab. Zygmunt M. Kowalski University of Agriculture in Krakow Krakow, Poland Animal management systems and technologies: Prof. dr hab. Tomasz M. Gruszecki University of Life Sciences in Lublin Lublin, Poland Animal behavior and welfare: Prof. dr hab. Zbigniew Jaworski University of Warmia and Mazury in Olsztyn Olsztyn, Poland Animal reproduction: Prof. dr hab. Stanisław Kondracki Siedlce University of Natural Sciences and Humanities Siedlce, Poland Animal genetics and breeding: Prof. dr hab. Tomasz Szwaczkowski Poznań University of Life Sciences Poznań, Poland Animal genetics and breeding – Cattle: Prof. dr hab. Piotr Guliński Siedlce University of Natural Sciences and Humanities Siedlce, Poland Prof. dr hab. Anna Sawa, UTP University of Science and Technology in Bydgoszcz Bydgoszcz, Poland Animal genetics and breeding – Pigs: Prof. dr hab. Anna Rekiel, Warsaw University of Life Sciences - SGGW Warsaw, Poland Animal genetics and breeding – Poultry: Prof. dr. hab. Anna Wójcik University of Warmia and Mazury in Olsztyn Olsztyn, Poland Animal genetics and breeding – Horses: Dr Grażyna Polak National Research Institute of Animal Production Krakow, Poland Animal genetics and breeding – Sheep and goats: Dr hab. Witold Rant Warsaw University of Life Sciences - SGGW Warsaw, Poland Animal genetics and breeding – Fur bearing animal: Prof. dr hab. Andrzej Gugołek University of Warmia and Mazury in Olsztyn Olsztyn, Poland Animal genetics and breeding – Accompanying and Wild Animals Dr hab. Mirosław Karpiński University of Life Sciences in Lublin Lublin, Poland Breeding practice Dr hab. Henryk Malec ZWD Malec Dębówka, Poland

Statistical editor

Prof. dr hab. Idzi Siatkowski Poznań University of Life Sciences Poznań, Poland Science council:

Prof. dr hab. Roman Niżnikowski (chairman – Warsaw) Warsaw University of Life Sciences - SGGW Warsaw, Poland

Prof. dr hab. Leszek Drozd University of Life Sciences in Lublin Lublin, Poland

Prof. dr hab. Janusz Falkowski University of Warmia and Mazury in Olsztyn Olsztyn, Poland

Prof. dr hab. Volodymyr K. Kostiuk National University of Life and Environmental Sciences of Ukraine, Kijów, Ukraina

Prof. Aldona Pieńkowska-Schelling Institute of Genetics University of Bern Bern, Switzerland

Dr hab. Andrzej Rosiński HUBBARD – Poland Pawlow Trzebnicki, Poland

Dr Ferdinand Ringdorfer Agricultural Research and Education Centre (AREC) Raumberg-Gumpenstein, Austria

Dr hab. Anna Wolc Iowa State University College of Agriculture and Life Sciences Ames, Iowa, USA

Prof. dr hab. Jozef Bulla Slovak University of Agriculture in Nitra Nitra, Slovakia

Prof. Yaroslav Kyryliv Lviv State University of Life Safety Lviv, Ukraine

Dr Michal Milerski Institute of Animal Science (IAS) Prague, Czech Republic Prof. dr. Matthias Gauly Free University of Bozen – Bolzano Bozen-Bolzano, Italy

Prof. Michel de Rancourt University of Toulouse, École d’ingénieurs de Purpan Toulouse, France

Dr Philippe Chemineau French national institute for agricultural research (INRA) French National Centre for Scientific Research (CNRS) Université de Tours The French Horse and Riding Institute (IFCE) Agreenium, the French Agricultural, Veterinary and Forestry Institute Nouzilly, France

Editorial:

Mgr inż. Żaneta Szweda

Dominika Stolpe