1. Albert Kázmér Faculty of Mosonmagyaróvár, Széchenyi István University, Lucsony Str. 2, H-9200 Mosonmagyaróvár, Hungary
2. Bonafarm Agriculture-Swine Department, Ady Endre Str. 21, H-7754 Bóly, Hungary
3. DSM Nutritional Products Hungary Ltd., Japán Fasor 4, H-2367 Újhartyán, Hungary
4. Institute of Animal Science, Hungarian University of Agriculture and Life Sciences, Kaposvár Campus, Guba Sándor Str. 40, H-7400 Kaposvár, Hungary