1. Department of Animal Nutrition, Feed Science and Cattle Breeding, University of Warmia and Mazury in Olsztyn, 10-718 Olsztyn, Poland
2. Chr. Hansen A/S, Animal and Plant Health & Nutrition, 2970 Hoersholm, Denmark
3. Center of Translational Medicine, Warsaw University of Life Sciences, ul. Nowoursynowska 100, 02-797 Warszawa, Poland
4. Department of Poultry Science, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland