1. Trakia University, Stara Zagora, Bulgaria
2. Moscow State Academy of Veterinary Medicine and Biotechnology named after K.I. Skryabin, Moscow, Russia
3. Szent Istvan University, Godollo, Hungary
4. Sumy National Agrarian University, Sumy, Ukraine
5. Odessa National Academy of Food Technologies, Ukraine
6. All Russian Institute of Poultry Husbandry, Sergiev Posad, Russia